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Industrial clarification of anthocyanin‐rich grape pomace extracts by crossflow membrane filtration
Author(s) -
Prodanov Marin,
Vacas Visitación,
Sánchez Ana M.,
Alonso Gonzalo L.,
Elorza Ángeles,
Lucendo César,
Hernández Teresa,
Estrella Isabel
Publication year - 2013
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.12105
Subject(s) - anthocyanin , membrane , pomace , chemistry , permeation , filtration (mathematics) , chromatography , polysulfone , food science , biochemistry , mathematics , statistics
Summary A comparative study on the clarification of anthocyanin‐rich grape pomace extracts was carried out by tubular, hollow fibre and spiral wound industrial crossflow membrane units. Three polysulfone membranes were tested: a 500‐ kD a molecular mass cut‐off (MMCO), and a 0.2‐ and 0.6‐μm pore size cut‐offs (PSCO). The 500‐ kD a MMCO and the 0.2‐μm PSCO membranes produced particle‐free extracts, while the 0.6‐μm membrane showed deficient clarification. The 500‐ kD a MMCO membrane produced up to 3.7% loss of most of the individual anthocyanins, while the 0.6‐ and 0.2‐μm PSCO membranes produced up to 2% only of some of the anthocyanins with higher molecular masses. Permeate steady fluxes of up to 53 L h −1 m −2 were obtained. Particles with sizes of 0.5–1.5 μm and the macromolecular anthocyanin–tannin complexes had a major impact on membrane performance. The obtained results are scalable to industrial installations.