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Effect of solar and electric drying on the content of the phenolic compounds and antioxidant activity of three Varieties of onion (allium cepa L)

Abdou Bouba Armand, Toua Vroumsia, Nkouam Gilles Bernard, Njintang Yanou Nicolas, Mang Yannick Dimitry, Montet Didier, Scher Joel, Mbofung C.M.F.. 2012. Effect of solar and electric drying on the content of the phenolic compounds and antioxidant activity of three Varieties of onion (allium cepa L). International Journal of Biology, Pharmacy and Allied Sciences, 1 (3) : pp. 204-220.

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Abstract : The present research aimed at evaluating the effect of drying on the antioxidant properties of three varieties of onion. Onion powders were prepared after solar or electric dryings. The total phenolic compounds (TPC), flavonoids, tannins, and vitamin C were assayed at time in the fresh and powdered samples of these varieties. The total reducing power (TRP) and scavenging capacity (ABTS and DPPH) were also evaluated. Results showed a significant decrease (P _ 0.05) in the parameters evaluated during drying and a significant positive correlation (P _ 0.05) between ABTS and DPPH (R2 = 0.602) and between TPC and TRP (R2 = 0.77), and between TPC and the scavenging capacity (R2 = 0.88, R2 = 0.71 for ABTS and DPPH respectively). The Violet of Galmi variety appeared to have the strongest antioxidant activity even after drying. In general, drying reduced the antioxidant activity of onion. (Résumé d'auteur)

Mots-clés Agrovoc : Oignon, Allium cepa, Antioxydant, Séchage, Tannin, Acide ascorbique, Composé phénolique, Flavonoïde, Variété

Mots-clés géographiques Agrovoc : Cameroun

Classification Agris : Q02 - Food processing and preservation
Q04 - Food composition

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

Auteurs et affiliations

  • Abdou Bouba Armand, Université de Maroua (CMR)
  • Toua Vroumsia, Université de Maroua (CMR)
  • Nkouam Gilles Bernard, Université de Maroua (CMR)
  • Njintang Yanou Nicolas, Université de Ngaoundéré (CMR)
  • Mang Yannick Dimitry, Université de Maroua (CMR)
  • Montet Didier, CIRAD-PERSYST-UMR Qualisud (FRA)
  • Scher Joel, Université de Nancy (FRA)
  • Mbofung C.M.F., Université de Ngaoundéré (CMR)

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/566420/)

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