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Pre-flowering harvesting of ocimum gratissimum for higher essential oil and eugenol yields under semi-arid tropics / Sushil K. Kothari in The journal of essential oil research, Vol. 17 N° 2 (Mars-Avril 2005) 

Public ISBD [article]  in The journal of essential oil research > Vol. 17 N° 2 (Mars-Avril 2005) . - pp. 212-216 Titre : Pre-flowering harvesting of ocimum gratissimum for higher essential oil and eugenol yields under semi-arid tropics Type de document : texte imprimé Auteurs : Sushil K. Kothari, Auteur ; Arun K. Bhattacharya, Auteur ; Kama Slingh, Auteur Année de publication : 2006 Article en page(s) : pp. 212-216 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Ocimum  gratissimum  Lamiaceae  Harvest  management  Oil  yield  Essential  oil  composition  Eugenol  (E)-β-oci-mene Résumé : In spice basil (Ocimum gratissimum L.), contribution of leaves, stalks and inflorescences were 59%, 23% and 18% to total plant biomass and 80%, 1% and 19% to total oil yield, respectively. The leaf oil was richer in eugenol but simultaneously had lower (E)-β-ocimene, compared to the inflorescence oil. Harvesting at pre-flowering produced 12.5%, 24.1%, 35.5% and 50.0% higher biomass yield compared to harvesting at 25%, 50%, 75% and 100% flowering, respectively, in the first year of cropping. The respective increase was 16.8%, 22.0%, 38.2% and 63.2% in the second year. Late harvested crop (100% flowering) contained the highest amount of essential oil and it decreased in the order of harvesting at 100% flowering > 75% flowering > 50% flowering > 25% flowering > pre-flowering treatment. The total oil yield was, however, significantly higher (15.8–19.9% and 12.7–33.6% in first and second years, respectively) with pre-flowering compared to all other harvest treatments. Pre-flowering harvested crop produced oil containing the highest amount of eugenol and it decreased in the order of harvesting at pre-flowering > 25% flowering > 50% flowering > 75% flowering > 100% flowering treatment. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698879 [article] Pre-flowering harvesting of ocimum gratissimum for higher essential oil and eugenol yields under semi-arid tropics [texte imprimé] / Sushil K. Kothari, Auteur ; Arun K. Bhattacharya, Auteur ; Kama Slingh, Auteur . - 2006 . - pp. 212-216. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 2 (Mars-Avril 2005) . - pp. 212-216 Mots-clés : Ocimum  gratissimum  Lamiaceae  Harvest  management  Oil  yield  Essential  oil  composition  Eugenol  (E)-β-oci-mene Résumé : In spice basil (Ocimum gratissimum L.), contribution of leaves, stalks and inflorescences were 59%, 23% and 18% to total plant biomass and 80%, 1% and 19% to total oil yield, respectively. The leaf oil was richer in eugenol but simultaneously had lower (E)-β-ocimene, compared to the inflorescence oil. Harvesting at pre-flowering produced 12.5%, 24.1%, 35.5% and 50.0% higher biomass yield compared to harvesting at 25%, 50%, 75% and 100% flowering, respectively, in the first year of cropping. The respective increase was 16.8%, 22.0%, 38.2% and 63.2% in the second year. Late harvested crop (100% flowering) contained the highest amount of essential oil and it decreased in the order of harvesting at 100% flowering > 75% flowering > 50% flowering > 25% flowering > pre-flowering treatment. The total oil yield was, however, significantly higher (15.8–19.9% and 12.7–33.6% in first and second years, respectively) with pre-flowering compared to all other harvest treatments. Pre-flowering harvested crop produced oil containing the highest amount of eugenol and it decreased in the order of harvesting at pre-flowering > 25% flowering > 50% flowering > 75% flowering > 100% flowering treatment. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698879