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

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

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.

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Bibliographic Details
Main Authors: Ouédraogo, Nicolas, Djifaby Sombié, Pierre Alexandre Eric, Traoré, Renan Ernest, Sama, Hemayoro, Bationo Kando, Pauline, Sawadogo, Mahamadou, Lebot, Vincent
Format: article biblioteca
Language:eng
Subjects:Q04 - Composition des produits alimentaires, F30 - Génétique et amélioration des plantes, F60 - Physiologie et biochimie végétale, 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, http://aims.fao.org/aos/agrovoc/c_1765, http://aims.fao.org/aos/agrovoc/c_511, http://aims.fao.org/aos/agrovoc/c_3225, http://aims.fao.org/aos/agrovoc/c_14791, http://aims.fao.org/aos/agrovoc/c_8157, http://aims.fao.org/aos/agrovoc/c_7369, http://aims.fao.org/aos/agrovoc/c_1298, http://aims.fao.org/aos/agrovoc/c_6251, http://aims.fao.org/aos/agrovoc/c_1374567058134, http://aims.fao.org/aos/agrovoc/c_2964, http://aims.fao.org/aos/agrovoc/c_5772, http://aims.fao.org/aos/agrovoc/c_1666, http://aims.fao.org/aos/agrovoc/c_1897, http://aims.fao.org/aos/agrovoc/c_5278, http://aims.fao.org/aos/agrovoc/c_8081,
Online Access:http://agritrop.cirad.fr/604764/
http://agritrop.cirad.fr/604764/1/Nutritional%20and%20phytochemical%20characterization%20of%20taro.pdf
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Summary: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.

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