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Variation in phenolic compounds,anthocyanins, and color in red wine treated with enzymatic extract of Kluyveromyces marxianus
Authors:Luciani Tatsch Piemolini-Barreto  Jucimar Zacaria  Ana Paula Longaray Delamare  Regina Vasconcellos Antonio  Sergio Echeverrigaray
Institution:1. Programa de Pós-Gradua??o em Engenharia de Alimentos, Universidade Federal de Santa Catarina, Florianópolis, SC, CEP: 88040-900, Brazil
2. Centro de Ciências Exatas e Tecnologia, Curso de Engenharia de Alimentos, Universidade de Caxias do Sul, Caixa Postal 1352, Caxias do Sul, RS, CEP: 95001-970, Brazil
3. Universidade de Caxias do Sul, Instituto de Biotecnologia, PO Box 1352, Caxias do Sul, RS, 95070-560, Brazil
Abstract:The effect of the addition of enzymatic extract of Kluyveromyces marxianus NRRL-Y-7571 during the maceration and fermentation steps of Cabernet Sauvignon wine production was evaluated. The results obtained in the analytical determinations of the wines showed levels within the limits established by legislation and similar to values found in other studies. The results show that by adding the enzyme to the red wines these showed color characteristics considered to be superior to those of the control wine and accelerated the extraction of phenolic compounds and anthocyanins. It was observed that by using the commercial enzyme preparation there was an increase of 15 % in polyphenol content compared to the control wine and an increase of 28 % when the crude enzyme extract was used. Anthocyanin content in the wine increased after treatment with the commercial enzyme preparation (10 %) and with the use of the crude enzymatic extract (22 %). Considering all comparison criteria, the K. marxianus enzymatic extract showed results statistically similar or superior to those obtained with the commercial enzyme preparation.
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