In the present paper the potential application of colloidal gas aphrons (CGA) generated from a cationic surfactant (CTAB) for recovery of antioxidants from wine-making wastes extracts is investigated. Trials were carried out on standard solutions of gallic acid (GA) 200 mg/l. Influence of pH, solvent (ethanol), and of CTAB to GA volume and molar ratios on recovery were studied. Best recovery (63%) was achieved from an aqueous solution of GA at a molar ratio of 16. Separation occurs driven by electrostatic interactions, but pH conditions are to be optimised to preserve the GA antioxidant power.

Spigno, G., Jauregi, P., Recovery of polyphenols from wine-making wastes with colloidal gas aphrons (CGA), <<INTERNATIONAL JOURNAL OF FOOD ENGINEERING>>, 2005; (1(4)): N/A-N/A. [doi:10.1016/S0260-8774(03)00248-6] [https://hdl.handle.net/10807/231741]

Recovery of polyphenols from wine-making wastes with colloidal gas aphrons (CGA)

Spigno, Giorgia;
2005

Abstract

In the present paper the potential application of colloidal gas aphrons (CGA) generated from a cationic surfactant (CTAB) for recovery of antioxidants from wine-making wastes extracts is investigated. Trials were carried out on standard solutions of gallic acid (GA) 200 mg/l. Influence of pH, solvent (ethanol), and of CTAB to GA volume and molar ratios on recovery were studied. Best recovery (63%) was achieved from an aqueous solution of GA at a molar ratio of 16. Separation occurs driven by electrostatic interactions, but pH conditions are to be optimised to preserve the GA antioxidant power.
2005
Inglese
Spigno, G., Jauregi, P., Recovery of polyphenols from wine-making wastes with colloidal gas aphrons (CGA), <<INTERNATIONAL JOURNAL OF FOOD ENGINEERING>>, 2005; (1(4)): N/A-N/A. [doi:10.1016/S0260-8774(03)00248-6] [https://hdl.handle.net/10807/231741]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/231741
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 16
social impact