Quantification of flavonoids in black rice by liquid chromatography- negative electrospray ionization tandem mass spectrometry

Systematic identification and structural characterization of flavonoids and their glycosides in bran extracts of seven Thai black rice varieties were performed by sequential uses of reversed-phase HPLC with a photodiode array detector and a combined electrospray ionization tandem mass spectrometer....

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Main Authors: Sriseadka T., Wongpornchai S., Rayanakorn M.
Format: Journal
Published: 2017
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84870371475&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42726
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-427262017-09-28T06:38:03Z Quantification of flavonoids in black rice by liquid chromatography- negative electrospray ionization tandem mass spectrometry Sriseadka T. Wongpornchai S. Rayanakorn M. Systematic identification and structural characterization of flavonoids and their glycosides in bran extracts of seven Thai black rice varieties were performed by sequential uses of reversed-phase HPLC with a photodiode array detector and a combined electrospray ionization tandem mass spectrometer. Eleven flavonoids were detected, and six of these were found for the first time in rice bran. These were taxifolin-7-O-glucoside, myricetin-7-O-glucoside, isorhamnetin-3-O-acetylglucoside, isorhamnetin-7-O-rutinoside, 5,6,3′,4′,5′-pentahydroxyflavone-7-O-glucoside, and 5,3′,4′,5′-tetrahydroxyflavanone-7-O-glucoside. The quantitative results revealed that different rice varieties possessed flavonoids in different concentrations. The most abundant glycoside derivative of flavonoids widely distributed among the rice varieties was monoglucoside, such as quercetin-3-O-glucoside, isorhamnetin-3-O-glucoside, and isorhamnetin-3-O- glucoside. © 2012 American Chemical Society. 2017-09-28T06:38:03Z 2017-09-28T06:38:03Z 2012-11-28 Journal 00218561 2-s2.0-84870371475 10.1021/jf303204s https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84870371475&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/42726
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description Systematic identification and structural characterization of flavonoids and their glycosides in bran extracts of seven Thai black rice varieties were performed by sequential uses of reversed-phase HPLC with a photodiode array detector and a combined electrospray ionization tandem mass spectrometer. Eleven flavonoids were detected, and six of these were found for the first time in rice bran. These were taxifolin-7-O-glucoside, myricetin-7-O-glucoside, isorhamnetin-3-O-acetylglucoside, isorhamnetin-7-O-rutinoside, 5,6,3′,4′,5′-pentahydroxyflavone-7-O-glucoside, and 5,3′,4′,5′-tetrahydroxyflavanone-7-O-glucoside. The quantitative results revealed that different rice varieties possessed flavonoids in different concentrations. The most abundant glycoside derivative of flavonoids widely distributed among the rice varieties was monoglucoside, such as quercetin-3-O-glucoside, isorhamnetin-3-O-glucoside, and isorhamnetin-3-O- glucoside. © 2012 American Chemical Society.
format Journal
author Sriseadka T.
Wongpornchai S.
Rayanakorn M.
spellingShingle Sriseadka T.
Wongpornchai S.
Rayanakorn M.
Quantification of flavonoids in black rice by liquid chromatography- negative electrospray ionization tandem mass spectrometry
author_facet Sriseadka T.
Wongpornchai S.
Rayanakorn M.
author_sort Sriseadka T.
title Quantification of flavonoids in black rice by liquid chromatography- negative electrospray ionization tandem mass spectrometry
title_short Quantification of flavonoids in black rice by liquid chromatography- negative electrospray ionization tandem mass spectrometry
title_full Quantification of flavonoids in black rice by liquid chromatography- negative electrospray ionization tandem mass spectrometry
title_fullStr Quantification of flavonoids in black rice by liquid chromatography- negative electrospray ionization tandem mass spectrometry
title_full_unstemmed Quantification of flavonoids in black rice by liquid chromatography- negative electrospray ionization tandem mass spectrometry
title_sort quantification of flavonoids in black rice by liquid chromatography- negative electrospray ionization tandem mass spectrometry
publishDate 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84870371475&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42726
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