Rapid estimation of taro (Colocasia esculenta) quality by near-infrared reflectance spectroscopy

Lebot Vincent, Malapa Roger, Bourrieau Marion. 2011. Rapid estimation of taro (Colocasia esculenta) quality by near-infrared reflectance spectroscopy. Journal of Agricultural and Food Chemistry, 59 (17) : 9327-9334.

Quartile : Outlier, Sujet : AGRICULTURE, MULTIDISCIPLINARY / Quartile : Q1, Sujet : FOOD SCIENCE & TECHNOLOGY / Quartile : Q1, Sujet : CHEMISTRY, APPLIED

Résumé : The aim of the present study is to develop a methodology for the rapid estimation of taro (Colocasia esculenta) quality. Chemical analyses were conducted on 315 accessions for major constituents (starch, total sugars, cellulose, proteins, and minerals). NIRS calibration equations, developed on a calibration set composed of 243 accessions, showed high explained variances in crossvalidation (r2 cv) for starch (0.89), sugars (0.90), proteins (0.89), and minerals (0.90) but poor response for amylose (0.44) and cellulose (0.61). The predictions were tested on an independent set of 58 randomly selected accessions. The r2 pred values for starch, sugars, proteins, and minerals were, respectively, of 0.76, 0.74, 0.85, and 0.85 with ratios of performance to deviation (RPD) of 3.41, 4.01, 3.78, and 3.64. New calibration equations developed on 303 accessions confirmed good RPD values for starch (3.30), sugars (4.13), proteins (3.61), and minerals (3.74). NIRS could be used to predict starch, sugars, proteins, and minerals contents in taro corms with reasonably high confidence.

Mots-clés Agrovoc : taro, Colocasia esculenta, spectroscopie infrarouge, qualité, amidon

Mots-clés géographiques Agrovoc : Vanuatu

Classification Agris : Q04 - Composition des produits alimentaires
U30 - Méthodes de recherche

Champ stratégique Cirad : Axe 3 (2005-2013) - Alimentation accessible et de qualité

Auteurs et affiliations

• Lebot Vincent, CIRAD-BIOS-UMR AGAP (VUT)
• Malapa Roger, VARTC (VUT)
• Bourrieau Marion

Source : Cirad - Agritrop (https://agritrop.cirad.fr/561955/)

Métriques

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