China has a rich resource of fragrant japonica rice that is gaining increasing consumers’ interests.In the present study,an untargeted gas chromatography-mass spectrometry-based metabolomics was employed to investiga...China has a rich resource of fragrant japonica rice that is gaining increasing consumers’ interests.In the present study,an untargeted gas chromatography-mass spectrometry-based metabolomics was employed to investigate the volatile profile of Chinese fragrant and non-fragrant japonica varieties.Partial least square discriminative analysis (PLS-DA) along with univariate analysis was taken to seek specific markers in raw and cooked Chinese japonica rice distinguishing fragrant and non-fragrant varieties.Volatile profile of raw Chinese japonica rice dominated by alkanes was completely different from that of cooked rice predominated by aldehydes.Thirteen and eleven volatile compounds were selected as the potential discriminative markers in raw and cooked Chinese japonica rice,respectively.Only 2-acetylpyrrole and decanal served as the specific marker in both raw and cooked Chinese japonica rice.Fragrant Chinese japonica rice varieties contained more 2-acetylpyrrole,(E )-2-octenal,nonanal,1-tetradecene,decanal and (E )-2-decenal in raw rice.While fragrant Chinese japonica rice varieties contained more 2-acetyl-1-pyrroline,2-acetylpyrrole,1-hexanol,decanal and indole in cooked rice.The results provided an in-depth understanding of volatile variation in raw and cooked form of aromatic and non-aromatic cultivars and will benefit rice adulteration identification and marker-assisted flavor breeding in the future.展开更多
基金greatly appreciate National Japonica Rice Engineering Technology Research Center and Yangzhou University for rice samples provided.This work was supported by the National Natural Science Support of China(No.31872905)the National Thirteenth Five-Year Plan for Science&Technology Support of China(2018YFD0400604)+3 种基金the China Postdoctoral Science Foundation(No.2020M671344)the Major scientific and technological innovation project of Shandong Province(2019JZZY010722)the foundation of State Key Laboratory of Biobased Materials and Green Papermaking,Qilu University of Technology,Shandong Academy of Science(No.KF201910)the National Natural Science Support of China(32001617).
文摘China has a rich resource of fragrant japonica rice that is gaining increasing consumers’ interests.In the present study,an untargeted gas chromatography-mass spectrometry-based metabolomics was employed to investigate the volatile profile of Chinese fragrant and non-fragrant japonica varieties.Partial least square discriminative analysis (PLS-DA) along with univariate analysis was taken to seek specific markers in raw and cooked Chinese japonica rice distinguishing fragrant and non-fragrant varieties.Volatile profile of raw Chinese japonica rice dominated by alkanes was completely different from that of cooked rice predominated by aldehydes.Thirteen and eleven volatile compounds were selected as the potential discriminative markers in raw and cooked Chinese japonica rice,respectively.Only 2-acetylpyrrole and decanal served as the specific marker in both raw and cooked Chinese japonica rice.Fragrant Chinese japonica rice varieties contained more 2-acetylpyrrole,(E )-2-octenal,nonanal,1-tetradecene,decanal and (E )-2-decenal in raw rice.While fragrant Chinese japonica rice varieties contained more 2-acetyl-1-pyrroline,2-acetylpyrrole,1-hexanol,decanal and indole in cooked rice.The results provided an in-depth understanding of volatile variation in raw and cooked form of aromatic and non-aromatic cultivars and will benefit rice adulteration identification and marker-assisted flavor breeding in the future.
