| Title: | Non-destructive profiling of volatile organic compounds using HS-SPME/GC-MS and its application for the geographical discrimination of white rice |
| Author(s): | Lim DK; Mo C; Lee DK; Long NP; Lim J; Kwon SW; |
| Address: | "Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea. National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54875, Republic of Korea. Plant Genomics and Breeding Institute, Seoul National University, Seoul 08826, Republic of Korea" |
| DOI: | 10.1016/j.jfda.2017.04.005 |
| ISSN/ISBN: | 2224-6614 (Electronic) 1021-9498 (Print) |
| Abstract: | "The authenticity determination of white rice is crucial to prevent deceptive origin labeling and dishonest trading. However, a non-destructive and comprehensive method for rapidly discriminating the geographical origins of white rice between countries is still lacking. In the current study, we developed a volatile organic compound based geographical discrimination method using headspace solid-phase microextraction coupled to gas chromatography-mass spectrometry (HS-SPME/GC-MS) to discriminate rice samples from Korea and China. A partial least squares discriminant analysis (PLS-DA) model exhibited a good classification of white rice between Korea and China (accuracy = 0.958, goodness of fit = 0.937, goodness of prediction = 0.831, and permutation test p-value = 0.043). Combining the PLS-DA based feature selection with the differentially expressed features from the unpaired t-test and significance analysis of microarrays, 12 discriminatory biomarkers were found. Among them, hexanal and 1-hexanol have been previously known to be associated with the cultivation environment and storage conditions. Other hydrocarbon biomarkers are novel, and their impact on rice production and storage remains to be elucidated. In conclusion, our findings highlight the ability to rapidly discriminate white rice from Korea and China. The developed method maybe useful for the authenticity and quality control of white rice" |
| Keywords: | Biomarkers China *Gas Chromatography-Mass Spectrometry Metabolome Metabolomics/methods Oryza/*chemistry Republic of Korea *Solid Phase Microextraction Volatile Organic Compounds/*chemistry/*isolation & purification Gc-ms Hs-spme Origin discrimination Oryz; |
| Notes: | "MedlineLim, Dong Kyu Mo, Changyeun Lee, Dong-Kyu Long, Nguyen Phuoc Lim, Jongguk Kwon, Sung Won eng Research Support, Non-U.S. Gov't China (Republic : 1949- ) 2018/02/02 J Food Drug Anal. 2018 Jan; 26(1):260-267. doi: 10.1016/j.jfda.2017.04.005. Epub 2017 May 31" |
