Physicochemical characteristics of kernel during fruit maturation of four coconut cultivars (Cocos nucifera L.)

Assa Rebecca Rachel, Konan Konan Jean Louis, Prades Alexia, Nemlin Jean, Koffi Ernest. 2010. Physicochemical characteristics of kernel during fruit maturation of four coconut cultivars (Cocos nucifera L.). African Journal of Biotechnology, 9 (14) : 2136-2144.

Quartile : Q4, Sujet : BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Résumé : Physicochemical characteristics of kernels from four cultivars of coconut were studied with the aim of increasing the value of coconut palm (Cocos nucifera L.), the main income of most equatorial coastal farmers. Studies were undertaken on West African Tall (WAT), Malaysian Yellow Dwarf (MYD), Equatorial Guinea Green Dwarf (EGD) and the improved PB121 hybrid, PB121+. Analyses were concerned with kernel weight, thickness, dry matter, oil, proteins and soluble sugars content at six stages (ranks) of nuts maturity. Chromatographic profiles of fatty acids of extracted oils were also determined. The results showed positive interaction between cultivar and maturity stage for all examined parameters. Then, PB121+ nuts, without kernel at the beginning of maturation, had the greatest weight (358.7 g) at rank 26. Kernel thickness was maximum (13.28 mm) in WAT at rank 26 due to nuts complete maturity. Oil content increased until the highest value of 73.01% in WAT at rank 23 before decreasing. Total soluble sugars, essentially non-reducing sugars, were maximum (9.09 g/100 g) in MYD fruits at rank 26. The fatty acids profiles showed an increasing proportion of lauric acid during nuts maturation. These results indicated the possibility of specific utilisations of coconut kernels according to cultivar and maturity stage.

Mots-clés Agrovoc : Cocos nucifera, noix de coco, variété, maturité, composition chimique, propriété physicochimique, qualité des aliments, stade de développement végétal

Mots-clés géographiques Agrovoc : Côte d'Ivoire

Classification Agris : Q04 - Composition des produits alimentaires
F62 - Physiologie végétale - Croissance et développement
F30 - Génétique et amélioration des plantes

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

Auteurs et affiliations

• Assa Rebecca Rachel, Université de Cocody (CIV)
• Konan Konan Jean Louis, CNRA (CIV)
• Prades Alexia, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0001-8508-0561
• Nemlin Jean, CNRA (CIV)
• Koffi Ernest, Université de Cocody (CIV)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/554330/)

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