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- Title
Effect of drying methods on volatiles of Chinese ginger (Zingiber officinale Roscoe).
- Authors
Ding, S. H.; An, K. J.; Zhao, C. P.; Li, Y.; Guo, Y. H.; Wang, Z. F.
- Abstract
Fresh ginger slices were dehydrated by air drying (AD), microwave drying (MD), vacuum drying (VD), and freezing drying (FD). Volatiles were extracted from fresh ginger pulp and dried ground ginger powder with solid-phase microextraction (SPME), and identified by gas chromatography-mass spectrometry (GC-MS). Results indicated that, 19, 28, 21, 20, 31 and 20 novel compounds (70 in total) appeared in dried gingers treated by AD at 50, 60 and 70 °C, MD at 60W, VD in 13.3 kPa at 60 °C and FD in 0.203 kPa at chamber temperature of 22 °C, respectively. Principal component analysis for the main volatiles indicated that drying increased the relative contents of benzene, l-(l,5-dimethyl-4-hexenyl)-4-methyl-, l,3-cyclohexadiene,5-(l,5-dimethyl-4-hexenyl)-2-rnethyl-,[S-(R*,S*)]-, α-farnesene and cyclohexene,3-(l,5-dimethyl-4-hexenyl) -6-methylene-,[S-(R*,S*)]- while decreased those of 2,6-octadienal,3,7-dimethyl-,(Z) and 2,6-octadienal,3,7-dimethyl-. °Cluster analysis disclosed that MD was the most favorite drying way, followed by AD at 60 °C, VD, FD, and AD at 50 and 70 °C.
- Subjects
GINGER; MICROWAVES; GAS chromatography/Mass spectrometry (GC-MS); PRINCIPAL components analysis; CLUSTER analysis (Statistics); CYCLOHEXADIENE; BENZENE
- Publication
Food & Bioproducts Processing: Transactions of the Institution of Chemical Engineers Part C, 2012, Vol 90, Issue 3, p515
- ISSN
0960-3085
- Publication type
Article
- DOI
10.1016/j.fbp.2011.10.003