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Batch hydrolysis and rotating disk membrane bioreactor for the production of galacto - oligosaccharides / Dwaipayan Sen in Industrial & engineering chemistry research, Vol. 51 N° 32 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 32 (Août 2012) . - pp. 10671–10681 Titre : Batch hydrolysis and rotating disk membrane bioreactor for the production of galacto - oligosaccharides : A Comparative study Type de document : texte imprimé Auteurs : Dwaipayan Sen, Auteur ; Ankur Sarkar, Auteur ; Saikat Das, Auteur Année de publication : 2012 Article en page(s) : pp. 10671–10681 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Comparative  study  Production  Bioreactor  Membrane  reactor  Rotating  disk  Hydrolysis  Batchwise Résumé : Galactosyl-oligosaccharide (GOS) is a prebiotic carbohydrate, produced from lactose hydrolysis, that serves as a value-added functional food element for humans. Now GOS can be produced through enzymatic reaction with lactose either in batch mode or with immobilized enzyme on membrane. In the second case, the main concern is the fouling of the membrane that could reduce both the GOS yield and purity. The present study is thus an attempt to project the superiority of a membrane reactor called the rotating disk membrane bioreactor (RDMBR) over batch mode to obtain purified GOS with high yield. It was found that GOS yield and purity were 32.4% and 77% respectively in batch mode followed by diafiltration-assisted nanofiltration. However, in the immobilized state they were 67.4% and 80.2% at 105 rad s―1 membrane speed. Retention of monosaccharides that inhibit enzyme in the reaction volume of batch mode reduced the yield of GOS. On the contrary, simultaneous production and purification of GOS in RDMBR led to a high yield of GOS. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26259771 [article] Batch hydrolysis and rotating disk membrane bioreactor for the production of galacto - oligosaccharides : A Comparative study [texte imprimé] / Dwaipayan Sen, Auteur ; Ankur Sarkar, Auteur ; Saikat Das, Auteur . - 2012 . - pp. 10671–10681. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 32 (Août 2012) . - pp. 10671–10681 Mots-clés : Comparative  study  Production  Bioreactor  Membrane  reactor  Rotating  disk  Hydrolysis  Batchwise Résumé : Galactosyl-oligosaccharide (GOS) is a prebiotic carbohydrate, produced from lactose hydrolysis, that serves as a value-added functional food element for humans. Now GOS can be produced through enzymatic reaction with lactose either in batch mode or with immobilized enzyme on membrane. In the second case, the main concern is the fouling of the membrane that could reduce both the GOS yield and purity. The present study is thus an attempt to project the superiority of a membrane reactor called the rotating disk membrane bioreactor (RDMBR) over batch mode to obtain purified GOS with high yield. It was found that GOS yield and purity were 32.4% and 77% respectively in batch mode followed by diafiltration-assisted nanofiltration. However, in the immobilized state they were 67.4% and 80.2% at 105 rad s―1 membrane speed. Retention of monosaccharides that inhibit enzyme in the reaction volume of batch mode reduced the yield of GOS. On the contrary, simultaneous production and purification of GOS in RDMBR led to a high yield of GOS. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26259771