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Analytical Methods Vol -3

Analytical Methods Vol -2

Analytical Methods Vol -1

Determination of flavor components of rice bran by GC-MS and chemometrics

Content Provider	Royal Society of Chemistry (RSC)
Author	He, Zhiyong Zhang, Liangxiao Qin, Fang Tang, Xueyan Zeng, Maomao Huang, Xiaolin Qu, Honghong Chen, Jie
Copyright Year	2012
Abstract	The flavor composition of rice bran was investigated using solid-phase microextraction (SPME), which was selected from four extraction methods. Additionally, static headspace extraction (SHS), accelerated solvent extraction (ASE) and simultaneous distillation extraction (SDE), followed by GC-MS analysis with the help of heuristic evolving latent projections (HELP) were also used. The effects of the most important factors, including fiber coating, extraction time, and temperature of SPME, on the flavor components of rice bran were studied. Qualitative analysis of the flavor components was obtained by a mass spectra similarity search using pure mass spectra resolved by HELP with the aid of automated mass spectral deconvolution and identification system (AMDIS) software and temperature-programmed retention indices (PTRIs), while quantitative analysis was conducted using the overall volume integration (OVI) technique. A total of 43 out of 76 compounds were tentatively identified, accounting for 82.76% of the total flavor compounds. The flavor compounds were mainly esters, alkanes, alcohols, ketones, aldehydes, and fatty acids, with a composition of 22.24%, 22.16%, 17.75%, 9.06%, 5.72%, and 4.18%, respectively. Together, these results indicate that analyzing the rice bran flavor profile may be more reasonable than solely monitoring free fatty acids for understanding, evaluating and controlling the instability of rice bran.
Starting Page	539
Ending Page	545
Page Count	7
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	4
Issue Number	2
Journal	Analytical Methods
DOI	10.1039/c2ay05671b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Distillation Gas chromatography\u2013mass spectrometry Deconvolution Accelerated solvent extraction Solid-phase microextraction Rice Heuristic Similarity search
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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