Nutritional and phytochemical characterization of taro (Colocasia esculenta) germplasm from Burkina Faso

Ouédraogo Nicolas, Djifaby Sombié Pierre Alexandre Eric, Traoré Renan Ernest, Sama Hemayoro, Bationo Kando Pauline, Sawadogo Mahamadou, Lebot Vincent. 2023. Nutritional and phytochemical characterization of taro (Colocasia esculenta) germplasm from Burkina Faso. Journal of Plant Breeding and Crop Science, 15 (1):4D7BF5270199 : 32-41.

https://doi.org/10.5897/JPBCS2022.0999

Article de revue ; Article de recherche ; Article de revue à comité de lecture Revue en libre accès total

Prévisualisation

Version publiée - Anglais
Sous licence

.
Nutritional and phytochemical characterization of taro.pdf
Télécharger (550kB) | Prévisualisation

Résumé : Taro (Colocasia esculenta (L.) Schott) is a food crop mainly produced for its nutrient-rich corms. This study aims to characterize the nutritional and antioxidant potential of fifty-nine genotypes of taro to identify the most interesting chemotypes. The traits evaluated were: starch, proteins, soluble sugars, total phenolics, flavonoids, and antioxidant capacity, assessed by Ferric reducing antioxidant power (FRAP) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) methods. Results indicate that taro corms are a good source of nutritional and bioactive compounds. Also, significant variations were recorded between genotypes for the different parameters evaluated. Total phenolics content varied from 4.37± 0.02 to 115.21 ± 8.24 mg GAE/100 g dw, flavonoids from 0.25 ± 0 to 1.47 ± 0.07 mg quercetin equivalent (QE)/100 g dw, starch content from 0.31 ± 0.17 to 17.56 ± 0.27 mg/100 mg dw, proteins from 0.03 ± 0.03 to 0.80 ± 0.02 mg/100 mg dw and soluble sugars from 0.02 ± 0 to 8.10 ± 0.38 mg/100 mg dw. Antioxidant activities ranged from 39.20 ± 1.74 to 98.67 ± 1.62% for the ability to reduce DPPH and from 0.06 ± 0.03 to 12.16 ± 0.72 mg AAE/100 g dw for the ability to reduce iron (FRAP). These variations have allowed us to distinguish four chemotypes.

Mots-clés Agrovoc : Colocasia esculenta, antioxydant, génotype, taro, variété, amidon, teneur en glucides, teneur en protéines, adaptation aux changements climatiques, flavonoïde, composé phénolique, changement climatique, cormus, valeur nutritive