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dc.contributor.authorNataporn Wijiten_US
dc.contributor.authorSukon Prasitwattanasereeen_US
dc.contributor.authorSugunya Mahatheeranonten_US
dc.contributor.authorPeter Wolschannen_US
dc.contributor.authorSupat Jiranusornkulen_US
dc.contributor.authorPiyarat Nimmanpipugen_US
dc.description.abstractA quantitative structure-retention relationship (QSRR) study was applied for an estimation of retention times of secondary volatile metabolites in Thai jasmine rice. In this study, chemical components in rice seed were extracted using solvent extraction, then separated and identified by gas chromatography-mass spectrometry (GC-MS). A set of molecular descriptors was generated for these substances obtained from GC-MS analysis to numerically represent the molecular structure of such compounds. Principal component analysis (PCA) and principal component regression analysis (PCR) were used to model the retention times of these compounds as a function of the theoretically derived descriptors. The best fitted regression model was obtained with R-squared of 0.900. The informative chemical properties related to retention time were elucidated. The results of this study demonstrate clearly that the combination of molecular weight and autocorrelation functions of two dimensional interatomic distance, which are molecular polarizability, atom identity, sigma charge, sigma electronegativity and polarizability, can be considered as comprehensive factors for predicting the retention times of volatile compounds in rice.en_US
dc.titleEstimation of retention time in GC/MS of volatile metabolites in fragrant rice using principle components of molecular descriptorsen_US
article.title.sourcetitleAnalytical Sciencesen_US
article.volume33en_US Mai Universityen_US Wienen_US
Appears in Collections:CMUL: Journal Articles

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