期刊
SEMINA-CIENCIAS AGRARIAS
卷 29, 期 1, 页码 117-128出版社
UNIV ESTADUAL LONDRINA
DOI: 10.5433/1679-0359.2008v29n1p117
关键词
active packaging; polyphenoloxidase; fruits
The enzymatic browning is the most limiting factor of fruits and vegetables shelf-life. The objective of this study was to evaluate the effect of an active packaging incorporated with anti-oxidant agents to inhibit apple's enzymatic browning. Cellulosic films were incorporated with cysteine and sulphite and used to cover apples divided in halves. Browning inhibition was measured by polyphenoloxidase activity and colour analysis (CEE Lab colour system). Low concentration of sulphite (1%) showed efficient browning inhibition and higher concentration of cysteine (15%) was necessary to reach the same results. Treatments containing cysteine and sulphite resulted in brighter apples and less browning compared with control. The quantity of sulphite released to apples was lower than the limit allowed by legislation, decreasing, in this way, the levels of additives ingested by the consumer. In this study, the effectiveness of active packaging in providing product conservation was confirmed by the inhibition of browning in apples.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据