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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. Secondary metabolite diversity in taro, Colocasia esculenta (L.) Schott, corms. Journal of Food Composition and Analysis, 52 : pp. 24-32.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q1, Sujet : FOOD SCIENCE & TECHNOLOGY / Quartile : Q1, Sujet : CHEMISTRY, APPLIED

Abstract : 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)

Mots-clés Agrovoc : Colocasia esculenta, Composition chimique, Variation génétique, Indol, Flavone, Caroténoïde, Flavonoïde, Composé phénolique, Composition des aliments, Propriété physicochimique, Variété, Taro, HPLC

Mots-clés géographiques Agrovoc : Vanuatu, Asie du Sud-Est

Mots-clés libres : Diversity, Carotenoids, Chemotype, Colocasia esculenta, HPLC, UPLC-ESI-Q-TOF, Phenolic compounds, Food analysis, Food composition, Taro

Classification Agris : F60 - Plant physiology and biochemistry
Q04 - Food composition

Champ stratégique Cirad : Axe 3 (2014-2018) - Alimentation durable

Auteurs et affiliations

  • Muñoz-Cuervo Ismael, Université de Lyon (FRA)
  • Malapa Roger, VARTC (VUT)
  • Michalet Serge, Université de Lyon (FRA)
  • Lebot Vincent, CIRAD-BIOS-UMR AGAP (VUT)
  • Legendre Laurent, Université Claude Bernard (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/581324/)

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