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Effect of drying methods on volatiles of Chinese ginger (Zingiber officinale Roscoe)

Paper ID Volume ID Publish Year Pages File Format Full-Text
19067 43043 2012 10 PDF Available
Title
Effect of drying methods on volatiles of Chinese ginger (Zingiber officinale Roscoe)
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 60 W, 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,1-(1,5-dimethyl-4-hexenyl)-4-methyl-, 1,3-cyclohexadiene,5-(1,5-dimethyl-4-hexenyl)-2-methyl-,[S-(R*,S*)]-, α-farnesene and cyclohexene,3-(1,5-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.

► Comparing effects of different drying ways on volatiles of ginger. ► Cluster analysis disclosed that microwave drying is the most favorite drying way. ► Drying increased contents of some volatiles while decreased those of others.

Keywords
Ginger; Drying; Volatiles; Solid-phase microextraction(SPME); Gas chromatography–mass spectrometry (GC–MS); Principal component analysis; Cluster analysis
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Effect of drying methods on volatiles of Chinese ginger (Zingiber officinale Roscoe)
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 90, Issue 3, July 2012, Pages 515–524
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us