文章基本信息

标题：Zea mays ) kernels
本地全文：下载
作者：Song J.-F. ; Liu C.-Q. ; Li D.-J. 等
期刊名称：Czech Journal of Food Sciences
印刷版ISSN：1212-1800
电子版ISSN：1805-9317
出版年度：2013
卷号：31
期号：6
页码：607-612
DOI：10.17221/396/2012-CJFS
出版社：Czech Academy of Agricultural Sciences
摘要：We evaluated the effect of three different cooking methods on antioxidant content and radical scavenging activity of sweet corn. Both fresh and frozen sweet corn kernels were boiled, microwaved, and stir-fried for 1, 3, and 5 min, respectively, then total phenolic (TP) and total carotenoid (TC) contents were determined by spectrophotometric methods. The free radical scavenging activity of the samples was determined using 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. The results showed that there was a significant increase in TP (1.2–1.9 times) and TC (1.1 to 1.8 times) content of fresh sweet corn after each cooking session for 1, 3, and 5 min, the same treatment of frozen corn resulted in 47–80% losses of TP and 10 to 39% losses of TC content. The free radical scavenging activity (RSA) exhibited by cooked fresh and frozen sweet corns was found to be different, neither of them was very high, in the range of 70.2–78.6%, and the fresh cooked ones had higher values of RSA.
关键词：Zea mays L.; cooking process; phenolics; β-carotene; antioxidan