Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 72, Issue -, Pages 343-350Publisher
ELSEVIER
DOI: 10.1016/j.lwt.2016.05.004
Keywords
Button mushroom; Freeze drying; Microwave vacuum drying; Volatile compound
Categories
Funding
- Natural Science Foundation of Jiangsu Province [BK20150986]
- Agro-scientific Research in the Public Interest [201303080]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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Button mushroom slices were dehydrated using freeze drying (FD) or combined with microwave vacuum drying (FMVD), and the changes in volatile composition were investigated and compared by using headspace GC MS and electronic nose (E-nose). The results showed that the content of C8 compounds decreased during FD/FMVD process, while more allcanes and heterocyclic compounds were generated in the latter drying periods. The content of original thermal volatile compounds in FMVD products were significantly lower compared to FD, and the same trent was observed on alkanes and heterocyclic compounds. Moreover, the volatile compounds of FMVD products were more similar with fresh ones according to cluster analysis, and the critical point of change of volatile compounds might be at the end of sublimation period. In addition, E -nose could clearly discriminate button mushroom samples subject to different drying periods, the result obtained by E -nose showed good identity compared with GC MS. (C) 2016 Elsevier Ltd. All rights reserved.
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