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Novel approach to recover natural antioxidants from oil seed meal in ultrafiltration - nanofiltration - based technique / Ranjana Das in Industrial & engineering chemistry research, Vol. 50 N° 21 (Novembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 21 (Novembre 2011) . - pp. 12124-12133 Titre : Novel approach to recover natural antioxidants from oil seed meal in ultrafiltration - nanofiltration - based technique Type de document : texte imprimé Auteurs : Ranjana Das, Auteur ; Chiranjib Bhattacharjee, Auteur ; Santinath Ghosh, Auteur Année de publication : 2011 Article en page(s) : pp. 12124-12133 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Nanofiltration  Membrane  separation  Ultrafiltration  Antioxidant Résumé : This study describes an innovative approach for recovery and concentration of sesame glucosides from defatted sesame cake using membrane separation route. Simple aqueous extraction of the seed meal at suitable pH value followed by two steps membrane fractionation (ultrafiltration-nanofiltration) was done to obtain sesame glucoside concentrate. In this process, about 0.7% ± 0.29 recovery of total meal glucoside was achieved along with coproduct sesame protein isolate at yield value of 36.50%. Several in vitro analyses were carried out to assay the antioxidative potential of recovered glucosides in different reaction models. Recovered glucosides have shown comparable α,α'-diphenyl-1-picryl-hydrazyl radical scavenging activity and Cu2+ ion chelation capacity with solvent extracted glucosides. Sesame glucosides have shown unique antioxidant activity for 29 h in an induced oxidation system of linoleic acid emulsion. This study includes a detail analysis on membrane performance parameters and fouling characteristics of ultrafiltration membrane, which are crucial factors to consider for industrial relevance. All findings point toward the potentiality of ultrafiltration-nanofiltration-based technique for recovery of polar antioxidants from various raw materials. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24697529 [article] Novel approach to recover natural antioxidants from oil seed meal in ultrafiltration - nanofiltration - based technique [texte imprimé] / Ranjana Das, Auteur ; Chiranjib Bhattacharjee, Auteur ; Santinath Ghosh, Auteur . - 2011 . - pp. 12124-12133. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 21 (Novembre 2011) . - pp. 12124-12133 Mots-clés : Nanofiltration  Membrane  separation  Ultrafiltration  Antioxidant Résumé : This study describes an innovative approach for recovery and concentration of sesame glucosides from defatted sesame cake using membrane separation route. Simple aqueous extraction of the seed meal at suitable pH value followed by two steps membrane fractionation (ultrafiltration-nanofiltration) was done to obtain sesame glucoside concentrate. In this process, about 0.7% ± 0.29 recovery of total meal glucoside was achieved along with coproduct sesame protein isolate at yield value of 36.50%. Several in vitro analyses were carried out to assay the antioxidative potential of recovered glucosides in different reaction models. Recovered glucosides have shown comparable α,α'-diphenyl-1-picryl-hydrazyl radical scavenging activity and Cu2+ ion chelation capacity with solvent extracted glucosides. Sesame glucosides have shown unique antioxidant activity for 29 h in an induced oxidation system of linoleic acid emulsion. This study includes a detail analysis on membrane performance parameters and fouling characteristics of ultrafiltration membrane, which are crucial factors to consider for industrial relevance. All findings point toward the potentiality of ultrafiltration-nanofiltration-based technique for recovery of polar antioxidants from various raw materials. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24697529

Preparation of mustard (Brassica juncea L.) protein isolate and recovery of phenolic compounds by ultrafiltration / Ranjana Das 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. 4939–4947 Titre : Preparation of mustard (Brassica juncea L.) protein isolate and recovery of phenolic compounds by ultrafiltration Type de document : texte imprimé Auteurs : Ranjana Das, Auteur ; Chiranjib Bhattacharjee, Auteur ; Santinath Ghosh, Auteur Année de publication : 2009 Article en page(s) : pp. 4939–4947 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Mustard  Ultrafiltration-diafiltration-based  technique  Phenolic  antioxidants Résumé : Mustard (Brassica juncea L.) seed meal is good source of protein (28−36%) and phenolic antioxidants like sinapic acid and sinapine. In this work an ultrafiltration−diafiltration-based technique is developed for simultaneous preparation of protein isolate and recovery of phenolic rich fraction from seed meal using a high shear rotating disk membrane module with emphasis on reduced membrane fouling effect. The yield of membrane process found less (31.4% on dry basis) compared to precipitation process (42% on dry basis), but a high purity of protein isolate (96%) with improved functional properties was obtained. The phenolic content in the protein was found to be reduced from 7.23 mg/g of protein to as low as 0.6 mg/g of protein in this process. The phenolic-acid-rich fraction recovered shows about 87.24% radical scavenging and 34.3% chelation capacity per 100 ppm concentration. So, this process can be commercially exploited for protein isolate and phenolic antioxidant-rich product preparation after proper scale up. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801474q [article] Preparation of mustard (Brassica juncea L.) protein isolate and recovery of phenolic compounds by ultrafiltration [texte imprimé] / Ranjana Das, Auteur ; Chiranjib Bhattacharjee, Auteur ; Santinath Ghosh, Auteur . - 2009 . - pp. 4939–4947. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 10 (Mai 2009) . - pp. 4939–4947 Mots-clés : Mustard  Ultrafiltration-diafiltration-based  technique  Phenolic  antioxidants Résumé : Mustard (Brassica juncea L.) seed meal is good source of protein (28−36%) and phenolic antioxidants like sinapic acid and sinapine. In this work an ultrafiltration−diafiltration-based technique is developed for simultaneous preparation of protein isolate and recovery of phenolic rich fraction from seed meal using a high shear rotating disk membrane module with emphasis on reduced membrane fouling effect. The yield of membrane process found less (31.4% on dry basis) compared to precipitation process (42% on dry basis), but a high purity of protein isolate (96%) with improved functional properties was obtained. The phenolic content in the protein was found to be reduced from 7.23 mg/g of protein to as low as 0.6 mg/g of protein in this process. The phenolic-acid-rich fraction recovered shows about 87.24% radical scavenging and 34.3% chelation capacity per 100 ppm concentration. So, this process can be commercially exploited for protein isolate and phenolic antioxidant-rich product preparation after proper scale up. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801474q