Dépouillements

Odor properties and volatile compounds analysis of torreya grandis aril extracts / Liying Niu in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 1-6 Titre : Odor properties and volatile compounds analysis of torreya grandis aril extracts Type de document : texte imprimé Auteurs : Liying Niu, Auteur ; Jianfeng Bao, Auteur ; Lei Zhao, Auteur Année de publication : 2011 Article en page(s) : pp. 1-6 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Torreya  grandis  Odor  Volatile  components  ITEX-GC-FID/MS  QDA Index. décimale : 646 Résumé : The odor properties of samples extracted from the aril of the Chinese traditional medical plant Torreya grandis by hydrodistillation (HD), supercritical fluid carbon dioxide extraction (SFE) and solvent extraction (SE) were investigated by a trained panel applying quantitative descriptive analysis (QDA) with a 5-point intensity scale. At the same time, the volatile profiles were studied by in-tube extraction and direct thermal desorption gas chromatography equipped with fame ionization detector and hyphenated to mass spectrometry (ITEX-GC-FID/MS). The SE sample showed most a unpleasant “sweaty, pungent” odor, while the SFE sample exhibited an appreciated “citric, sweet, floral” odor, and the HD sample was distinguished by its “minty” sensory attributes. Moreover, the HD sample was characterized by the highest concentration of oxygenated monoterpenes (7.9%), while the SFE sample had the highest relative content of sequiterpenes (23.6%). On the other hand, the SE sample was distinguished by the high amount of aliphatic acids (0.8%). The significant difference in the odor properties of the three extracts is attributed to the large diversity in their compositions. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700461 [article] Odor properties and volatile compounds analysis of torreya grandis aril extracts [texte imprimé] / Liying Niu, Auteur ; Jianfeng Bao, Auteur ; Lei Zhao, Auteur . - 2011 . - pp. 1-6. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 1-6 Mots-clés : Torreya  grandis  Odor  Volatile  components  ITEX-GC-FID/MS  QDA Index. décimale : 646 Résumé : The odor properties of samples extracted from the aril of the Chinese traditional medical plant Torreya grandis by hydrodistillation (HD), supercritical fluid carbon dioxide extraction (SFE) and solvent extraction (SE) were investigated by a trained panel applying quantitative descriptive analysis (QDA) with a 5-point intensity scale. At the same time, the volatile profiles were studied by in-tube extraction and direct thermal desorption gas chromatography equipped with fame ionization detector and hyphenated to mass spectrometry (ITEX-GC-FID/MS). The SE sample showed most a unpleasant “sweaty, pungent” odor, while the SFE sample exhibited an appreciated “citric, sweet, floral” odor, and the HD sample was distinguished by its “minty” sensory attributes. Moreover, the HD sample was characterized by the highest concentration of oxygenated monoterpenes (7.9%), while the SFE sample had the highest relative content of sequiterpenes (23.6%). On the other hand, the SE sample was distinguished by the high amount of aliphatic acids (0.8%). The significant difference in the odor properties of the three extracts is attributed to the large diversity in their compositions. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700461

Chemical composition and antioxidant activities of tunisian and canadian coriander (coriandrum sativum L.) fruit / Jazia Sriti in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 7-15 Titre : Chemical composition and antioxidant activities of tunisian and canadian coriander (coriandrum sativum L.) fruit Type de document : texte imprimé Auteurs : Jazia Sriti, Auteur ; Wissem Aidi Wannes, Auteur ; Thierry Talou, Auteur Année de publication : 2011 Article en page(s) : pp. 7-15 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Coriandrum  sativum  Fruit  Essential  oil  Linalool  Polyphenols  Antioxidant  activity Index. décimale : 646 Résumé : This study was designed to examine the essential oil composition, phenolic contents and antioxidant activity of the essential oils and methanol extracts from two coriander fruit samples, the first from Tunisia (Tn) and the second from Canada (Can). The highest essential oil yield was observed for Can with 0.44% (w/w) and 0.37% (w/w) for Tn. Forty-five compounds were identified in the essential oils and the main compound of both samples was linalool. The total phenol contents varied between two coriander fruit samples; Can sample presented high polyphenol contents (15.16 mg GAE/g) compared with Tn one (12.10 mg GAE/g). Significant differences were also found in total tannin contents among representing 0.7 mg GAE/g in Can and 0.34 mg GAE/g in Tn. The highest contents of total flavonoids were observed in Can sample with 13.2 mg CE/g Antioxidants of essential oils and methanolic extracts of these fruit samples were evaluated by using DPPH radical scavenging, β-carotene-linoleic acid bleaching and reducing power activity assays. In all tests, methanolic extracts of coriander fruits showed better antioxidant activity than essential oils. DPPH scavenging ability of methanolic extracts of two fruits was higher than that of synthetic antioxidant BHT (IC50 = 25 μg/mL). Both extracts and essential oils had lower β-carotene bleaching activity than BHA and BHT and had lower reducing power than ascorbic acid (EC50 = 40 μg/mL). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700462 [article] Chemical composition and antioxidant activities of tunisian and canadian coriander (coriandrum sativum L.) fruit [texte imprimé] / Jazia Sriti, Auteur ; Wissem Aidi Wannes, Auteur ; Thierry Talou, Auteur . - 2011 . - pp. 7-15. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 7-15 Mots-clés : Coriandrum  sativum  Fruit  Essential  oil  Linalool  Polyphenols  Antioxidant  activity Index. décimale : 646 Résumé : This study was designed to examine the essential oil composition, phenolic contents and antioxidant activity of the essential oils and methanol extracts from two coriander fruit samples, the first from Tunisia (Tn) and the second from Canada (Can). The highest essential oil yield was observed for Can with 0.44% (w/w) and 0.37% (w/w) for Tn. Forty-five compounds were identified in the essential oils and the main compound of both samples was linalool. The total phenol contents varied between two coriander fruit samples; Can sample presented high polyphenol contents (15.16 mg GAE/g) compared with Tn one (12.10 mg GAE/g). Significant differences were also found in total tannin contents among representing 0.7 mg GAE/g in Can and 0.34 mg GAE/g in Tn. The highest contents of total flavonoids were observed in Can sample with 13.2 mg CE/g Antioxidants of essential oils and methanolic extracts of these fruit samples were evaluated by using DPPH radical scavenging, β-carotene-linoleic acid bleaching and reducing power activity assays. In all tests, methanolic extracts of coriander fruits showed better antioxidant activity than essential oils. DPPH scavenging ability of methanolic extracts of two fruits was higher than that of synthetic antioxidant BHT (IC50 = 25 μg/mL). Both extracts and essential oils had lower β-carotene bleaching activity than BHA and BHT and had lower reducing power than ascorbic acid (EC50 = 40 μg/mL). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700462

Efficient callus induction, plant regeneration and estragole estimation in Tarragon (artemisia dracunculus L.) / Amany K. Ibrahim in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 16-20 Titre : Efficient callus induction, plant regeneration and estragole estimation in Tarragon (artemisia dracunculus L.) Type de document : texte imprimé Auteurs : Amany K. Ibrahim, Auteur ; Safwat A. Ahmed, Auteur ; Salah E. Khattab, Auteur Année de publication : 2011 Article en page(s) : pp. 16-20 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Artemisia  dracunculus  Asteraceae  Plant  regeneration  HPLC  Estragole Index. décimale : 646 Résumé : Our research studied the fast-breeding technology of Artemisia dracunculus using tissue culture in order to provide the scientific foundation for industry production. The susceptibility of callus formation and plant regeneration was studied under different conditions of basic medium, hormones and additives. The use of explants of different origins as the leaf, stem and root explants was also studied for best callus induction rate, regeneration ability and estragole concentration. The best culture medium for the induction of calli was MS + 2.4.D 1.0 mgl−1, which started with the leaves as explants, and the best medium for stem regeneration was MS + BA 0.5 mgl−1+ NAA 0.1 mgl−1. A new HPLC method was developed to provide a specific procedure for the rapid and facile analysis of the major constituent of tarragon volatile oil estragole. Estragole concentration was estimated at all the experiment treatments including the induced calli under different medium conditions, as well as the regenerated plants. Estragole concentration was found to be 9.8% dry weight in the in vitro regenerated plantlets. Using this method estragole was found to be absent in different plant extracts of the field grown plants (acclimatized after in vitro regeneration). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700463 [article] Efficient callus induction, plant regeneration and estragole estimation in Tarragon (artemisia dracunculus L.) [texte imprimé] / Amany K. Ibrahim, Auteur ; Safwat A. Ahmed, Auteur ; Salah E. Khattab, Auteur . - 2011 . - pp. 16-20. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 16-20 Mots-clés : Artemisia  dracunculus  Asteraceae  Plant  regeneration  HPLC  Estragole Index. décimale : 646 Résumé : Our research studied the fast-breeding technology of Artemisia dracunculus using tissue culture in order to provide the scientific foundation for industry production. The susceptibility of callus formation and plant regeneration was studied under different conditions of basic medium, hormones and additives. The use of explants of different origins as the leaf, stem and root explants was also studied for best callus induction rate, regeneration ability and estragole concentration. The best culture medium for the induction of calli was MS + 2.4.D 1.0 mgl−1, which started with the leaves as explants, and the best medium for stem regeneration was MS + BA 0.5 mgl−1+ NAA 0.1 mgl−1. A new HPLC method was developed to provide a specific procedure for the rapid and facile analysis of the major constituent of tarragon volatile oil estragole. Estragole concentration was estimated at all the experiment treatments including the induced calli under different medium conditions, as well as the regenerated plants. Estragole concentration was found to be 9.8% dry weight in the in vitro regenerated plantlets. Using this method estragole was found to be absent in different plant extracts of the field grown plants (acclimatized after in vitro regeneration). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700463

Mono-sesquiterpenoid composition in the leaves and flowers of salvia moorcroftiana wall ex Benth. growing wild in kashmir, India / Manzoor A. Rather in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 21-25 Titre : Mono-sesquiterpenoid composition in the leaves and flowers of salvia moorcroftiana wall ex Benth. growing wild in kashmir, India Type de document : texte imprimé Auteurs : Manzoor A. Rather, Auteur ; Bilal A. Dar, Auteur ; Khursheed A. Bhat, Auteur Année de publication : 2011 Article en page(s) : pp. 21-25 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Salvia  moorcroftiana  GC  GC/MS  Monoterpenes  Sesquiterpenes  (Z)-β-ocimene  β-caryophyllene  Germacrene  D Index. décimale : 646 Résumé : In this study, the mono-sesquiterpenoid composition in the leaves and flowers of Salvia moorcroftiana Wall ex Benth is tracked by probing the contents of individual mono- and sesquiterpenoids in the leaf and flower essential oils obtained by hydrodistillation using a combination of GC and GC/MS techniques. Twenty-seven components belonging to different classes of terpenoids and accounting for 94.8% of the total oil were identified in the floral part. Monoterpene hydrocarbons represented the dominant class (68%). (Z)-β-ocimene (54.5%) was the principal component along with sabinene (10.3%), and β-caryophyllene (9.9%). In the leaves only eleven components accounting for 94.4% of the total oil were identified. The leaf essential oil was almost exclusively composed of sesquiterpene hydrocarbons accounting for 87.7% of the total oil. The principal components present were β-caryophyllene (51.6%) followed by germacrene D (18.5%), bicyclogermacrene (7.1%), α-humulene (4.8%) and α-copaene (3.1%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700464 [article] Mono-sesquiterpenoid composition in the leaves and flowers of salvia moorcroftiana wall ex Benth. growing wild in kashmir, India [texte imprimé] / Manzoor A. Rather, Auteur ; Bilal A. Dar, Auteur ; Khursheed A. Bhat, Auteur . - 2011 . - pp. 21-25. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 21-25 Mots-clés : Salvia  moorcroftiana  GC  GC/MS  Monoterpenes  Sesquiterpenes  (Z)-β-ocimene  β-caryophyllene  Germacrene  D Index. décimale : 646 Résumé : In this study, the mono-sesquiterpenoid composition in the leaves and flowers of Salvia moorcroftiana Wall ex Benth is tracked by probing the contents of individual mono- and sesquiterpenoids in the leaf and flower essential oils obtained by hydrodistillation using a combination of GC and GC/MS techniques. Twenty-seven components belonging to different classes of terpenoids and accounting for 94.8% of the total oil were identified in the floral part. Monoterpene hydrocarbons represented the dominant class (68%). (Z)-β-ocimene (54.5%) was the principal component along with sabinene (10.3%), and β-caryophyllene (9.9%). In the leaves only eleven components accounting for 94.4% of the total oil were identified. The leaf essential oil was almost exclusively composed of sesquiterpene hydrocarbons accounting for 87.7% of the total oil. The principal components present were β-caryophyllene (51.6%) followed by germacrene D (18.5%), bicyclogermacrene (7.1%), α-humulene (4.8%) and α-copaene (3.1%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700464

Research on the effects of rosemary (rosmarinus officinalis L.) on the blood lipids and anti-lipid peroxidation in rats / Ya-ni Wu in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 26-34 Titre : Research on the effects of rosemary (rosmarinus officinalis L.) on the blood lipids and anti-lipid peroxidation in rats Type de document : texte imprimé Auteurs : Ya-ni Wu, Auteur ; Jian Huang, Auteur ; An-lian Zuo, Auteur Année de publication : 2011 Article en page(s) : pp. 26-34 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Rosemary  Rosmarinus  officinalis  Blood  lipids  Lipid  peroxidation Index. décimale : 646 Résumé : To study the effects of rosemary on blood lipid level and lipid peroxidation, the hyperlipidemia SD rats were randomly divided into four groups according to total cholesterol (TC) level, along with a normal control group. Four groups were separately administered rosemary essential oil, aqueous extract, and crude plant powder. Such three parts of rosemary enhanced the activities of superoxide dismutase (SOD) and total antioxidant capacity (T-AOC), and alleviated the peroxidation injury in vivo of hyperlipidemia rats. Plant powder showed better effect on decreasing blood lipids than aqueous extract and essential oil. Rosemary exhibited an obvious inhibitory effect on the increased serum TC and triglyceride (TG) levels, and an antagonistic effect on the increased lipid peroxidation level induced by high fat feedstuff, suggesting that rosemary has significant health benefits and could be explored for the prevention of hyperlipidemia diseases. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700465 [article] Research on the effects of rosemary (rosmarinus officinalis L.) on the blood lipids and anti-lipid peroxidation in rats [texte imprimé] / Ya-ni Wu, Auteur ; Jian Huang, Auteur ; An-lian Zuo, Auteur . - 2011 . - pp. 26-34. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 26-34 Mots-clés : Rosemary  Rosmarinus  officinalis  Blood  lipids  Lipid  peroxidation Index. décimale : 646 Résumé : To study the effects of rosemary on blood lipid level and lipid peroxidation, the hyperlipidemia SD rats were randomly divided into four groups according to total cholesterol (TC) level, along with a normal control group. Four groups were separately administered rosemary essential oil, aqueous extract, and crude plant powder. Such three parts of rosemary enhanced the activities of superoxide dismutase (SOD) and total antioxidant capacity (T-AOC), and alleviated the peroxidation injury in vivo of hyperlipidemia rats. Plant powder showed better effect on decreasing blood lipids than aqueous extract and essential oil. Rosemary exhibited an obvious inhibitory effect on the increased serum TC and triglyceride (TG) levels, and an antagonistic effect on the increased lipid peroxidation level induced by high fat feedstuff, suggesting that rosemary has significant health benefits and could be explored for the prevention of hyperlipidemia diseases. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700465

Evaluation of some types of fennel (foeniculum vulgare Mill.) newly introduced and adapted in Egypt / Ahmed S. Shalaby in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 35-42 Titre : Evaluation of some types of fennel (foeniculum vulgare Mill.) newly introduced and adapted in Egypt Type de document : texte imprimé Auteurs : Ahmed S. Shalaby, Auteur ; Saber F. Hendawy, Auteur ; Mona Y. Khalil, Auteur Année de publication : 2011 Article en page(s) : pp. 35-42 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Foeniculum  vulgare  Estragole  Anethole  Essential  oil Index. décimale : 646 Résumé : Exports of local fennel (Foeniculum vulgare Mill.) from Egypt over the past few years have been affected due to the high estragole but low anethole content of the oil. Therefore, fennel seeds were imported from different countries to investigate the adaptability of such strains in different locations in Egypt, in comparison with the local one. The obtained results indicated that Holland fennel surpassed other fennel strains under study, as it showed the best growth in terms of number of umbels, seed production, seed oil (%) and oil production per plant and unit area. The seed oil of this strain had the highest content of anethole (75.93% on average) and low estragole percentage (4.22%). The Indian strain showed poor characters. The German strain contained high oil percentage; however, the oil yield/plant or unit area was poor. Locations in Menia led to the best characters for Holland, Indian, Azoricum and local fennel; however, it did not favor the growth of the German strain. It would be recommended to cultivate the Holland fennel strain at Menia to obtain the best growth, oil yield and character. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700466 [article] Evaluation of some types of fennel (foeniculum vulgare Mill.) newly introduced and adapted in Egypt [texte imprimé] / Ahmed S. Shalaby, Auteur ; Saber F. Hendawy, Auteur ; Mona Y. Khalil, Auteur . - 2011 . - pp. 35-42. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 35-42 Mots-clés : Foeniculum  vulgare  Estragole  Anethole  Essential  oil Index. décimale : 646 Résumé : Exports of local fennel (Foeniculum vulgare Mill.) from Egypt over the past few years have been affected due to the high estragole but low anethole content of the oil. Therefore, fennel seeds were imported from different countries to investigate the adaptability of such strains in different locations in Egypt, in comparison with the local one. The obtained results indicated that Holland fennel surpassed other fennel strains under study, as it showed the best growth in terms of number of umbels, seed production, seed oil (%) and oil production per plant and unit area. The seed oil of this strain had the highest content of anethole (75.93% on average) and low estragole percentage (4.22%). The Indian strain showed poor characters. The German strain contained high oil percentage; however, the oil yield/plant or unit area was poor. Locations in Menia led to the best characters for Holland, Indian, Azoricum and local fennel; however, it did not favor the growth of the German strain. It would be recommended to cultivate the Holland fennel strain at Menia to obtain the best growth, oil yield and character. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700466

Essential oils from the leaves of eugenia pitanga (O. Berg) kiaersk. (myrtaceae) of paraguay cultivated in Arizona / Arthur O. Tucker in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 43-45 Titre : Essential oils from the leaves of eugenia pitanga (O. Berg) kiaersk. (myrtaceae) of paraguay cultivated in Arizona Type de document : texte imprimé Auteurs : Arthur O. Tucker, Auteur ; Sandra K. Jacobsen, Auteur ; Michael J. Maciarello, Auteur Année de publication : 2011 Article en page(s) : pp. 43-45 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Eugenia  pitanga  Myrtaceae  Essential  oil  composition  (E)-β-ocimene  Germacrene  D  Bicyclogermacrene  (Z)-β-ocimene Index. décimale : 646 Résumé : The essential oils isolated from the fresh leaves of Eugenia pitanga cultivated in Arizona, from seed originally collected in Paraguay, were analyzed by GC and GC/MS. The major components of the oil were (E)-β-ocimene (24.1±3.2%), germacrene D (20.8±2.4%), bicyclogermacrene (10.9±1.4%), and (Z)-β-ocimene (10.4±1.4%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700467 [article] Essential oils from the leaves of eugenia pitanga (O. Berg) kiaersk. (myrtaceae) of paraguay cultivated in Arizona [texte imprimé] / Arthur O. Tucker, Auteur ; Sandra K. Jacobsen, Auteur ; Michael J. Maciarello, Auteur . - 2011 . - pp. 43-45. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 43-45 Mots-clés : Eugenia  pitanga  Myrtaceae  Essential  oil  composition  (E)-β-ocimene  Germacrene  D  Bicyclogermacrene  (Z)-β-ocimene Index. décimale : 646 Résumé : The essential oils isolated from the fresh leaves of Eugenia pitanga cultivated in Arizona, from seed originally collected in Paraguay, were analyzed by GC and GC/MS. The major components of the oil were (E)-β-ocimene (24.1±3.2%), germacrene D (20.8±2.4%), bicyclogermacrene (10.9±1.4%), and (Z)-β-ocimene (10.4±1.4%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700467

Identification of odor-active components of agarwood essential oils from thailand by solid phase microextraction-GC/MS and GC-O / Patcharee Pripdeevech in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 46-53 Titre : Identification of odor-active components of agarwood essential oils from thailand by solid phase microextraction-GC/MS and GC-O Type de document : texte imprimé Auteurs : Patcharee Pripdeevech, Auteur ; Weeraya Khummueng, Auteur ; Seung-Kook Park, Auteur Année de publication : 2011 Article en page(s) : pp. 46-53 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Agarwood  Solid  phase-microextraction  (SPME)  GC/MS  Olfactometry  Essential  oil  Aquilaria  malaccensis  Aquilaria  subintegra  Aquilaria  crassna Index. décimale : 646 Résumé : Volatile components from the essential oils of Aquilaria malaccensis, A. subintegra and A. crassna were investigated by gas chromatography (GC), gas chromatography-mass spectrometry (GC/MS), and gas chromatography-olfactometry (GC-O). A total of 31 volatile constituents were identified from the three agarwood oils. A subset of 18 out of the 31 components was identified from the essential oil of A. malaccensis with the major components being isoamyl dodecanoate, guaia-1(10),11-dien-15-ol, karanone, cyclocolorenone and jinkoheremol. Aquilaria subintegra oil yielded 28 identified compounds with the most abundant components being isoamyl dodecanoate, kusunol, jinkoh-eremol, epoxybulnesene and β-agarofuran, while 30 volatile compounds from A. crassna were identified, with isoamyl dodecanoate, β-agarofuran, kusunol, dehydrojinkoh-eremol and 9,11-eremophiladien-8-one as the main constituents. The aroma-active compounds of the three samples were analyzed by HS-SPME-GC-O. A total of 74 odor-active components were characterized by using the GC-O technique. The major components responsible for the aroma included β-agarofuran, 4-phenyl-2-butanone, furfural and benzaldehyde, while the minor aroma notes were attributed to (E)-α-bergamotene, α-humulene, α-bulnesene, α-agarofuran, nor-ketoagarofuran, epoxybulnesene, agarospirol, jinkoh-eremol, kusunol, acorenone B, selina-3,11-dien-14-al and 9,11-eremophiladien-8-one, considered to be the most important aroma impact compounds for the characteristic aroma of agarwood essential oils. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700468 [article] Identification of odor-active components of agarwood essential oils from thailand by solid phase microextraction-GC/MS and GC-O [texte imprimé] / Patcharee Pripdeevech, Auteur ; Weeraya Khummueng, Auteur ; Seung-Kook Park, Auteur . - 2011 . - pp. 46-53. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 46-53 Mots-clés : Agarwood  Solid  phase-microextraction  (SPME)  GC/MS  Olfactometry  Essential  oil  Aquilaria  malaccensis  Aquilaria  subintegra  Aquilaria  crassna Index. décimale : 646 Résumé : Volatile components from the essential oils of Aquilaria malaccensis, A. subintegra and A. crassna were investigated by gas chromatography (GC), gas chromatography-mass spectrometry (GC/MS), and gas chromatography-olfactometry (GC-O). A total of 31 volatile constituents were identified from the three agarwood oils. A subset of 18 out of the 31 components was identified from the essential oil of A. malaccensis with the major components being isoamyl dodecanoate, guaia-1(10),11-dien-15-ol, karanone, cyclocolorenone and jinkoheremol. Aquilaria subintegra oil yielded 28 identified compounds with the most abundant components being isoamyl dodecanoate, kusunol, jinkoh-eremol, epoxybulnesene and β-agarofuran, while 30 volatile compounds from A. crassna were identified, with isoamyl dodecanoate, β-agarofuran, kusunol, dehydrojinkoh-eremol and 9,11-eremophiladien-8-one as the main constituents. The aroma-active compounds of the three samples were analyzed by HS-SPME-GC-O. A total of 74 odor-active components were characterized by using the GC-O technique. The major components responsible for the aroma included β-agarofuran, 4-phenyl-2-butanone, furfural and benzaldehyde, while the minor aroma notes were attributed to (E)-α-bergamotene, α-humulene, α-bulnesene, α-agarofuran, nor-ketoagarofuran, epoxybulnesene, agarospirol, jinkoh-eremol, kusunol, acorenone B, selina-3,11-dien-14-al and 9,11-eremophiladien-8-one, considered to be the most important aroma impact compounds for the characteristic aroma of agarwood essential oils. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700468

Seasonal variation of the volatile constituents from leaves of pimenta pseudocaryophyllus (Gomes) / Lauro E. S. Barata in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 54-57 Titre : Seasonal variation of the volatile constituents from leaves of pimenta pseudocaryophyllus (Gomes) Type de document : texte imprimé Auteurs : Lauro E. S. Barata, Auteur ; Bruna C. B. Dos Santos, Auteur ; Francisco A. Marques, Auteur Année de publication : 2011 Article en page(s) : pp. 54-57 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Seasonal  variation  Pimenta  pseudocaryophyllus  Chavibetol  Essential  oil Index. décimale : 646 Résumé : The chemical variation of volatile constituents from leaves of Pimenta pseudocaryophyllus collected bimonthly for one year from a locality in the Atlantic Rain Forest, southeastern Brazil, was determined by GC/MS. Seven com- pounds were identified and characterized, revealing a predominance of phenylpropanoids (15.4–70.9%) and variable amounts of monoterpenes (0.5–5.3%). The composition of the oil changed month by month. The best yield of oil was obtained in November, and the major component chavibetol was present in all samples (50.2–70.9%). The chavibetol content showed significant seasonal variation, with the maximum percentages of 69.1% and 70.9% measured in January and November, respectively. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700469 [article] Seasonal variation of the volatile constituents from leaves of pimenta pseudocaryophyllus (Gomes) [texte imprimé] / Lauro E. S. Barata, Auteur ; Bruna C. B. Dos Santos, Auteur ; Francisco A. Marques, Auteur . - 2011 . - pp. 54-57. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 54-57 Mots-clés : Seasonal  variation  Pimenta  pseudocaryophyllus  Chavibetol  Essential  oil Index. décimale : 646 Résumé : The chemical variation of volatile constituents from leaves of Pimenta pseudocaryophyllus collected bimonthly for one year from a locality in the Atlantic Rain Forest, southeastern Brazil, was determined by GC/MS. Seven com- pounds were identified and characterized, revealing a predominance of phenylpropanoids (15.4–70.9%) and variable amounts of monoterpenes (0.5–5.3%). The composition of the oil changed month by month. The best yield of oil was obtained in November, and the major component chavibetol was present in all samples (50.2–70.9%). The chavibetol content showed significant seasonal variation, with the maximum percentages of 69.1% and 70.9% measured in January and November, respectively. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700469

Microencapsulation of melaleuca alternifolia (tea tree) oil by using simple coacervation method / Buğra Ocak in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 58-65 Titre : Microencapsulation of melaleuca alternifolia (tea tree) oil by using simple coacervation method Type de document : texte imprimé Auteurs : Buğra Ocak, Auteur ; Gürbüz Gülümser, Auteur ; Esra Baloğlu, Auteur Année de publication : 2011 Article en page(s) : pp. 58-65 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Melaleuca  alternifolia  Microencapsulation  Coacervation  Release  rate  Gelatin Index. décimale : 646 Résumé : Glutaraldehyde (GA) crosslinked gelatin (G) microcapsules containing tea tree oil (TTO) were prepared by the simple coacervation technique. The effects of variations in concentrations of the G, TTO and GA used during the microencapsulation process, on the oil load of the microcapsules, the oil content, the encapsulation efficiency and the release rate of oil were determined. The size distribution and the morphology of the microcapsules were characterized by optical and scanning electron microscopy. It was determined by FTIR studies that there was no evidence for any significant interaction between G and TTO. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700470 [article] Microencapsulation of melaleuca alternifolia (tea tree) oil by using simple coacervation method [texte imprimé] / Buğra Ocak, Auteur ; Gürbüz Gülümser, Auteur ; Esra Baloğlu, Auteur . - 2011 . - pp. 58-65. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 58-65 Mots-clés : Melaleuca  alternifolia  Microencapsulation  Coacervation  Release  rate  Gelatin Index. décimale : 646 Résumé : Glutaraldehyde (GA) crosslinked gelatin (G) microcapsules containing tea tree oil (TTO) were prepared by the simple coacervation technique. The effects of variations in concentrations of the G, TTO and GA used during the microencapsulation process, on the oil load of the microcapsules, the oil content, the encapsulation efficiency and the release rate of oil were determined. The size distribution and the morphology of the microcapsules were characterized by optical and scanning electron microscopy. It was determined by FTIR studies that there was no evidence for any significant interaction between G and TTO. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700470

Composition of volatiles from three Iris species of Turkey / Kemal H. C. Başer in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 66-71 Titre : Composition of volatiles from three Iris species of Turkey Type de document : texte imprimé Auteurs : Kemal H. C. Başer, Auteur ; Betül Demirci, Auteur ; Ilkay Erdogan Orhan, Auteur Année de publication : 2011 Article en page(s) : pp. 66-71 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Iris  Orris  Iridaceae  GC  GC/MS  Volatile  components  Microdistillation Index. décimale : 646 Résumé : The genus Iris is known to contain gorgeous flowers with a violet-like scent. Iris is represented in the Turkish flora by 37 species. Nonetheless, no study has been so far performed on the volatile constituents of the Turkish Iris species. In this study, our objective was to determine compositions of volatiles of the individual plant parts, including flowers, rhizomes, and stems of three Turkish Iris species, namely: I. pseudacorus L. collected from two different localities (Beyşehir and Trabzon), I. kerneriana Asch. & Sint. ex Baker, as well as I. sofarana Foster (cultivated) by microdistillation. The volatile compounds of these species were analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) systems, simultaneously. The main components were characterized as follows: I. pseudacorus flowers: hexadecanoic acid (30.3%), heptacosane (13.6%), 6-methyl-5-hepten-2-one (11%); I. pseudacorus rhizomes: nonacosane (37.3%), triacontane (9.0%), octacosane (7.9%), pentacosane (7.7%); I. kerneriana flowers: α-kessyl acetate (14.7%), longipinene (10.8%), decanoic acid (10.6%), heptacosane (10.2%), hexadecanoic acid (9.5%), 6-methyl-5-hepten-2-one (7.1%); I. kerneriana rhizomes: tetradecanoic acid (31.5%), heptacosane (10.0%), α-kessyl acetate (9.5%), nonacosane (8.8%), 6-methyl-5-hepten-2-one (7.7%); I. kerneriana stems: nonacosane (18.3%), heptacosane (16.7%), pentacosane (10.3%), tricosane (6.0%); I. pseudoacarus rhizomes: nonacosane (26.2%), α-Kessyl acetate (14.7%), triacontane (7.3%), octacosane (7.4%); I. pseudacorus stems: octyl acetate (32.0%), nonacosane (14.4%), octyl butyrate (9.5%); I. sofarana rhizomes: decanoic acid (11.7%), α-pinene (8.4%), ethyl oleate (7.6%), irone (5.7%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700471 [article] Composition of volatiles from three Iris species of Turkey [texte imprimé] / Kemal H. C. Başer, Auteur ; Betül Demirci, Auteur ; Ilkay Erdogan Orhan, Auteur . - 2011 . - pp. 66-71. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 66-71 Mots-clés : Iris  Orris  Iridaceae  GC  GC/MS  Volatile  components  Microdistillation Index. décimale : 646 Résumé : The genus Iris is known to contain gorgeous flowers with a violet-like scent. Iris is represented in the Turkish flora by 37 species. Nonetheless, no study has been so far performed on the volatile constituents of the Turkish Iris species. In this study, our objective was to determine compositions of volatiles of the individual plant parts, including flowers, rhizomes, and stems of three Turkish Iris species, namely: I. pseudacorus L. collected from two different localities (Beyşehir and Trabzon), I. kerneriana Asch. & Sint. ex Baker, as well as I. sofarana Foster (cultivated) by microdistillation. The volatile compounds of these species were analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) systems, simultaneously. The main components were characterized as follows: I. pseudacorus flowers: hexadecanoic acid (30.3%), heptacosane (13.6%), 6-methyl-5-hepten-2-one (11%); I. pseudacorus rhizomes: nonacosane (37.3%), triacontane (9.0%), octacosane (7.9%), pentacosane (7.7%); I. kerneriana flowers: α-kessyl acetate (14.7%), longipinene (10.8%), decanoic acid (10.6%), heptacosane (10.2%), hexadecanoic acid (9.5%), 6-methyl-5-hepten-2-one (7.1%); I. kerneriana rhizomes: tetradecanoic acid (31.5%), heptacosane (10.0%), α-kessyl acetate (9.5%), nonacosane (8.8%), 6-methyl-5-hepten-2-one (7.7%); I. kerneriana stems: nonacosane (18.3%), heptacosane (16.7%), pentacosane (10.3%), tricosane (6.0%); I. pseudoacarus rhizomes: nonacosane (26.2%), α-Kessyl acetate (14.7%), triacontane (7.3%), octacosane (7.4%); I. pseudacorus stems: octyl acetate (32.0%), nonacosane (14.4%), octyl butyrate (9.5%); I. sofarana rhizomes: decanoic acid (11.7%), α-pinene (8.4%), ethyl oleate (7.6%), irone (5.7%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700471

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