Profiling Anthocyanins in Thai Purple Yams (Dioscorea alata L.)

Two accessions of Thai purple yam (Dioscorea alata) were investigated for their chemical constituents during tuber development when the vines were 3 to 8 months old. Yam tubers contained total phenolic compounds ranging between 100 and 385 mg gallic acid equivalent (GAE), flavonoids 60–160 mg catech...

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Main Authors: Subin Srivichai, Parichat Hongsprabhas
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:International Journal of Food Science
Online Access:http://dx.doi.org/10.1155/2020/1594291
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author Subin Srivichai
Parichat Hongsprabhas
author_facet Subin Srivichai
Parichat Hongsprabhas
author_sort Subin Srivichai
collection DOAJ
description Two accessions of Thai purple yam (Dioscorea alata) were investigated for their chemical constituents during tuber development when the vines were 3 to 8 months old. Yam tubers contained total phenolic compounds ranging between 100 and 385 mg gallic acid equivalent (GAE), flavonoids 60–160 mg catechin equivalent (CE), monomeric anthocyanin of 10–90 mg cyanidin-3-glucoside equivalent (CGE), 70 g starch, and 25–30 g amylose in 100 g yam tuber on a dried weight basis, depending on the accession and age of yam vine. LCMS-IT-TOF mass spectrometry revealed that anthocyanins in both accessions from 8-month-old vines had cyanidin or peonidin nucleus. Their glycosides were nonacylated, monoacylated, or diacylated with sinapic or ferulic acid. The major yam anthocyanins found in both accessions were alatanin C (cyanidin 3-(6-sinapoyl gentiobioside). This study revealed the insights on chemical components during tuber development and characteristics of alatanins for future selection and cultivation of purple yam tubers.
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spelling doaj-art-c96d3b1d1a584ecdafa788401bf50f942025-02-03T01:28:26ZengWileyInternational Journal of Food Science2356-70152314-57652020-01-01202010.1155/2020/15942911594291Profiling Anthocyanins in Thai Purple Yams (Dioscorea alata L.)Subin Srivichai0Parichat Hongsprabhas1Department of Food Science and Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, ThailandDepartment of Food Science and Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, ThailandTwo accessions of Thai purple yam (Dioscorea alata) were investigated for their chemical constituents during tuber development when the vines were 3 to 8 months old. Yam tubers contained total phenolic compounds ranging between 100 and 385 mg gallic acid equivalent (GAE), flavonoids 60–160 mg catechin equivalent (CE), monomeric anthocyanin of 10–90 mg cyanidin-3-glucoside equivalent (CGE), 70 g starch, and 25–30 g amylose in 100 g yam tuber on a dried weight basis, depending on the accession and age of yam vine. LCMS-IT-TOF mass spectrometry revealed that anthocyanins in both accessions from 8-month-old vines had cyanidin or peonidin nucleus. Their glycosides were nonacylated, monoacylated, or diacylated with sinapic or ferulic acid. The major yam anthocyanins found in both accessions were alatanin C (cyanidin 3-(6-sinapoyl gentiobioside). This study revealed the insights on chemical components during tuber development and characteristics of alatanins for future selection and cultivation of purple yam tubers.http://dx.doi.org/10.1155/2020/1594291
spellingShingle Subin Srivichai
Parichat Hongsprabhas
Profiling Anthocyanins in Thai Purple Yams (Dioscorea alata L.)
International Journal of Food Science
title Profiling Anthocyanins in Thai Purple Yams (Dioscorea alata L.)
title_full Profiling Anthocyanins in Thai Purple Yams (Dioscorea alata L.)
title_fullStr Profiling Anthocyanins in Thai Purple Yams (Dioscorea alata L.)
title_full_unstemmed Profiling Anthocyanins in Thai Purple Yams (Dioscorea alata L.)
title_short Profiling Anthocyanins in Thai Purple Yams (Dioscorea alata L.)
title_sort profiling anthocyanins in thai purple yams dioscorea alata l
url http://dx.doi.org/10.1155/2020/1594291
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