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Assessment of the production of oligomeric compounds from sugar beet pulp / Martina Martinez in Industrial & engineering chemistry research, Vol. 48 N° 10 (Mai 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 10 (Mai 2009) . - pp. 4681–4687 Titre : Assessment of the production of oligomeric compounds from sugar beet pulp Type de document : texte imprimé Auteurs : Martina Martinez, Auteur ; Beatriz Gullón, Auteur ; Henk A. Schols, Auteur Année de publication : 2009 Article en page(s) : pp. 4681–4687 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Sugar  beet  pulp  Oligogalacturonides  Arabinooligosaccharides Résumé : In order to obtain pectin-derived oligosaccharides (mainly arabinooligosaccharides and oligogalacturonides), samples of sugar beet pulp (SBP) were subjected to hydrothermal processing under nonisothermal conditions. Experiments carried out to reach temperatures in the range 160−175 °C (corresponding to values of the severity factor R0 in the range 287−835 min) led to comparatively high concentrations of both oligogalacturonides and arabinooligosaccharides. When SBP was treated to achieve a maximum temperature of 160 °C (R0 = 287 min) or 163 °C (R0 = 357 min), the overall amount of oligomers present in the reaction liquors recovered by pressing accounted for 31.2 and 29.9 g/100 g of oven-dried SBP, respectively, with a limited amount of nonvolatile impurities (about 0.15 g/g of oven-dried matter) and a mass ratio of arabinooligosaccharides/oligogalacturonides of about 1:1. Spent solids were washed with water, and the washing liquors were assayed for oligomers. Recovery of washing liquors would increase the overall yield process by 10%, to reach near 33 g/100 g of oven-dried SBP. Washed spent solids (with increased cellulose content) were obtained as a process byproduct. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8017753 [article] Assessment of the production of oligomeric compounds from sugar beet pulp [texte imprimé] / Martina Martinez, Auteur ; Beatriz Gullón, Auteur ; Henk A. Schols, Auteur . - 2009 . - pp. 4681–4687. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 10 (Mai 2009) . - pp. 4681–4687 Mots-clés : Sugar  beet  pulp  Oligogalacturonides  Arabinooligosaccharides Résumé : In order to obtain pectin-derived oligosaccharides (mainly arabinooligosaccharides and oligogalacturonides), samples of sugar beet pulp (SBP) were subjected to hydrothermal processing under nonisothermal conditions. Experiments carried out to reach temperatures in the range 160−175 °C (corresponding to values of the severity factor R0 in the range 287−835 min) led to comparatively high concentrations of both oligogalacturonides and arabinooligosaccharides. When SBP was treated to achieve a maximum temperature of 160 °C (R0 = 287 min) or 163 °C (R0 = 357 min), the overall amount of oligomers present in the reaction liquors recovered by pressing accounted for 31.2 and 29.9 g/100 g of oven-dried SBP, respectively, with a limited amount of nonvolatile impurities (about 0.15 g/g of oven-dried matter) and a mass ratio of arabinooligosaccharides/oligogalacturonides of about 1:1. Spent solids were washed with water, and the washing liquors were assayed for oligomers. Recovery of washing liquors would increase the overall yield process by 10%, to reach near 33 g/100 g of oven-dried SBP. Washed spent solids (with increased cellulose content) were obtained as a process byproduct. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8017753

Chemical production of pectic oligosaccharides from orange peel wastes / Martina Martinez in Industrial & engineering chemistry research, Vol. 49 N° 18 (Septembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 18 (Septembre 2010) . - pp. 8470–8476 Titre : Chemical production of pectic oligosaccharides from orange peel wastes Type de document : texte imprimé Auteurs : Martina Martinez, Auteur ; Remedios Yáñez, Auteur ; Jose Luis Alonso, Auteur Année de publication : 2010 Article en page(s) : pp. 8470–8476 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Oligosaccharides Résumé : Orange peel wastes (OPW) were extracted with water to remove soluble material, and the resulting solid phase (which was obtained at a yield of 48.8 kg/100 kg of OPW, oven-dry basis) was employed as a substrate for the manufacture of pectic oligosaccharides by nonisothermal processing with hot, compressed water (autohydrolysis or hydrothermal treatments). The effects of treatments on the composition of both liquors and spent solids were assessed in terms of the severity factor (Ro). Operating under selected conditions (maximum temperature of 160 °C, corresponding to Ro = 288 min), the oligosaccharide yield (including oligogalacturonides, arabinooligosaccharides, and galactooligosaccharides) accounted for 25.1 kg/100 kg of extracted OPW, whereas limited concentrations monosaccharides and nonsaccharide compounds were present in the reaction media. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101066m [article] Chemical production of pectic oligosaccharides from orange peel wastes [texte imprimé] / Martina Martinez, Auteur ; Remedios Yáñez, Auteur ; Jose Luis Alonso, Auteur . - 2010 . - pp. 8470–8476. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 18 (Septembre 2010) . - pp. 8470–8476 Mots-clés : Oligosaccharides Résumé : Orange peel wastes (OPW) were extracted with water to remove soluble material, and the resulting solid phase (which was obtained at a yield of 48.8 kg/100 kg of OPW, oven-dry basis) was employed as a substrate for the manufacture of pectic oligosaccharides by nonisothermal processing with hot, compressed water (autohydrolysis or hydrothermal treatments). The effects of treatments on the composition of both liquors and spent solids were assessed in terms of the severity factor (Ro). Operating under selected conditions (maximum temperature of 160 °C, corresponding to Ro = 288 min), the oligosaccharide yield (including oligogalacturonides, arabinooligosaccharides, and galactooligosaccharides) accounted for 25.1 kg/100 kg of extracted OPW, whereas limited concentrations monosaccharides and nonsaccharide compounds were present in the reaction media. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101066m