Valid evaluation of volatile flavor composition of fresh and dehydrated Tuber indicum with different drying methods
文献类型: 外文期刊
第一作者: Ma, Ning
作者: Ma, Ning;Pei, Fei;Yu, Jie;Hu, Qiuhui;Ma, Ning;Hu, Qiuhui;Wang, Siyu;Ho, Chi-Tang;Su, Kaimei
作者机构:
关键词: Tuber indicum;volatile compounds;flavor;headspace solid phase microextraction;GC-MS
期刊名称:CYTA-JOURNAL OF FOOD ( 影响因子:2.255; 五年影响因子:2.381 )
ISSN: 1947-6337
年卷期: 2018 年 16 卷 1 期
页码:
收录情况: SCI
摘要: The effects of three drying methods on volatile flavor components of Tuber indicum were studied. After hot air drying (AD), vacuum drying (VD), and vacuum-freeze drying (FD), flavor components were analyzed by headspace solid phase microextraction GC-MS and electronic nose (E-nose). The results from GC-MS showed that aldehydes (54.8%) and alcohols (31.4%) are the two dominant chemical species in fresh T. indicum and eight carbon (C8) compounds including 1-octen-3-ol, 3-octanol, n-octanol, 3-octanone. After dehydrating, C8 compounds, aldehyde, and ester components reduced, while alkanes, heterocyclic, and sulfur components were produced. Multivariate statistical analysis of the GC-MS revealed the components responsible for the chemical differences between fresh and three drying samples. In addition, E-nose could discriminate fresh and three drying samples. The result obtained by E-nose showed good identity compared with GC-MS. Therefore, FD was the optimal dehydrating method to preserve Tuberaceae with the most retained fresh flavor.
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