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Membrane fractionation of a β-lactoglobulin tryptic digest: effect of the hydrolysate concentration / Ayoa Fernandez in Industrial & engineering chemistry research, Vol. 51 N° 48 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15738–15744 Titre : Membrane fractionation of a β-lactoglobulin tryptic digest: effect of the hydrolysate concentration Type de document : texte imprimé Auteurs : Ayoa Fernandez, Auteur ; Francisco A. Riera, Auteur Année de publication : 2013 Article en page(s) : pp. 15738–15744 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Hydrolysate  Nanofiltration  membranes Résumé : The effect of the hydrolysate concentration on the fractionation of a complex peptide mixture through different organic Ultrafiltration/Nanofiltration membranes was evaluated in this paper. The role of changes induced by feed concentration on the selectivity of the membrane received particular attention. The results showed that an increase in feed concentration resulted in an increase in the transmission of anionic peptides, while the transmission of positively charged species decreased. These results tend to work against the selectivity of the process and suggest that the dual size/charge separation mechanism of charged membranes is lost, at least partially. Although in this particular case a slight increase in the separation factor between bioactive and nonbioactive peptides was obtained at high concentration regimes, the presence of an important flux decline may not compensate for it. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie302376g [article] Membrane fractionation of a β-lactoglobulin tryptic digest: effect of the hydrolysate concentration [texte imprimé] / Ayoa Fernandez, Auteur ; Francisco A. Riera, Auteur . - 2013 . - pp. 15738–15744. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15738–15744 Mots-clés : Hydrolysate  Nanofiltration  membranes Résumé : The effect of the hydrolysate concentration on the fractionation of a complex peptide mixture through different organic Ultrafiltration/Nanofiltration membranes was evaluated in this paper. The role of changes induced by feed concentration on the selectivity of the membrane received particular attention. The results showed that an increase in feed concentration resulted in an increase in the transmission of anionic peptides, while the transmission of positively charged species decreased. These results tend to work against the selectivity of the process and suggest that the dual size/charge separation mechanism of charged membranes is lost, at least partially. Although in this particular case a slight increase in the separation factor between bioactive and nonbioactive peptides was obtained at high concentration regimes, the presence of an important flux decline may not compensate for it. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie302376g