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Type: Artigo de periódico
Title: Sensory stability of Concord and Isabel concentrated grape juices during storage
Author: Gollucke, APB
De Souza, JC
Tavares, DDQ
Abstract: The study evaluated the sensory characteristics and phenolic contents of concentrated red grape juice of two cultivars (Concord and Isabel), over 8 months of storage. To approach the sensory aspects, modified descriptive analysis was used. Total phenols were quantified by the Folin-Ciocalteu assay and catechins ([+]-catechin and [-]-epicatechin) by high-performance liquid chromatography with fluorescent detection. The results showed fairly stable sensory behavior of both grape juices with a higher stability of Concord. Total phenols of Concord and Isabel juices depicted retention of 93 and 88%, respectively, and total catechins of 60 and 85%, respectively. Concord concentrated juice was more stable to storage with sensory characteristics of astringency, bitterness and higher color intensity, while Isabel juice was characterized by sweetness and juice flavor. Concentrated juices, under the investigated storage conditions were capable of maintaining sensory standards.
Country: EUA
Editor: Wiley-blackwell
Rights: fechado
Identifier DOI: 10.1111/j.1745-459X.2008.00159.x
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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