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Secondary metabolite diversity in taro, Colocasia esculenta (L.) Schott, corms

Muñoz-Cuervo Ismael, Malapa Roger, Michalet Serge, Lebot Vincent, Legendre Laurent. 2016. Elsevier.
Secondary metabolite diversity in taro, Colocasia esculenta (L.) Schott, corms
ARTICLE, (2016 ) - PUBLISHEDVERSION - English (en-GB)
Elsevier
RESTRICTEDACCESS - Cirad license.
Audience : RESEARCHERS
Elsevier Inc.
Subject
F60 - Physiologie et biochimie végétale, Q04 - Composition des produits alimentaires, Colocasia esculenta, Composition chimique, Variation génétique, Indol, Flavone, Caroténoïde, Flavonoïde, Composé phénolique, Composition des aliments, Propriété physicochimique, Variété, Taro, HPLC
Domains
Agriculture, Biologie, Sciences du vivant, Sciences humaines
Description
Taro, Colocasia esculenta (L.) Schott, is one of the oldest major staple food crops of tropical regions. This study represents one the first in-depth surveys of taro biodiversity based on corms flesh secondary metabolites fingerprints. Out of the 167 analyzed cultivars, 70 UV-absorbing substances were annotated according to their retention time, UV/vis absorption spectrum, high resolution mass (by HRMS) and fragmentation pattern (tandem MS-MS). They included 6 carotenoids, 35 flavones/flavonols, 6 flavanones, 2 flavanols and 1 indol. Twenty flavones that were glycosylated forms of apigenin, luteolin and chrysoeriol conferred to the corms a yellow color and defined a low abundance (ca. 10% of cultivars) chemotype. Their accumulation negatively correlated with flavanones which were annotated for the first time in taro. Orange flesh corms were characterized by high levels of β-carotene. Secondary metabolite-based chemotypes displayed no geographical distribution pattern. (Résumé d'auteur)
Keywords
Araceae, Diversity, Carotenoids, Chemotype, Colocasia esculenta, HPLC, UPLC-ESI-Q-TOF, Phenolic compounds, Food analysis, Food composition, Taro
Language
English (en-GB)
Creators
Muñoz-Cuervo Ismael, Malapa Roger, Michalet Serge, Lebot Vincent, Legendre Laurent
Contributors
Sources
Journal of Food Composition and Analysis 52 (2016) 24–32
Coverage
Vanuatu, Asie du Sud-Est
Name of newspaper
Elsevier