Antifungal activity of edible coating made from chitosan and lactoperoxidase system against Phomopsis sp. RP257 and Pestalotiopsis sp isolated from mango

Cissé Mohamed, N'Guessan Elise, Tia Vama Etienne, Loiseau Gérard, Montet Didier. 2020. Antifungal activity of edible coating made from chitosan and lactoperoxidase system against Phomopsis sp. RP257 and Pestalotiopsis sp isolated from mango. Journal of Food Safety, 40 (3):e12785, 7 p.

Quartile : Q3, Sujet : FOOD SCIENCE & TECHNOLOGY / Quartile : Q4, Sujet : BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Résumé : Lactoperoxidase system (LPOS) was incorporated into chitosan solutions (0.5, 1, and 1.5%) to protect mangoes against two strains of fungi. Coating solutions effectiveness in vitro (in Petri dish) and in vivo (on mango) were studied on fungal (Phomopsis sp. RP257 and Pestalotiopsis sp.) growth isolated from mango cv Amelie . In vitro, chitosan concentration at least 1% containing or not LPOS effectively inhibited Pestalotiopsis sp. growth at 100%. Presence of LPOS or Lactoperoxydase system with iodine (LPOSI) in chitosan at 0.5% increased the percentage of inhibition from 26 to 93%. Edible films with LPOS inhibited Phomopsis sp. RP257 particularly when LPOS was incorporated in chitosan concentrations of 1 and 1.5%. Iodine did not influenced antifungal activity of LPOS against Pestalotiopsis sp. but decreased activity antifungal toward Phomopsis sp. RP257. The properties (water vapor permeability and mechanical properties) of chitosan films were not significantly changed by the incorporation of the enzyme system. in vivo condition, chitosan coating at 1 and 1.5% with or without enzyme system was sufficient to inhibit totally (100%) Pestalotiopsis sp. and was 60% efficient against Phomopsis sp. with chitosan only at 1 and 1.5%. However, when coating solution mainly at 1 and 1.5% was enhanced by LPOS with or without iodine, it inhibited totally (100%) Phomopsis sp. RP257. The presence of iodine slightly reduced antifungal activity against Phomopsis sp. RP257.

Mots-clés Agrovoc : Mangifera indica, chitosane, lactopéroxydase, Phomopsis, Pestalotiopsis, film comestible, propriété antifongique, maladie fongique

Mots-clés libres : Antifungal activity, Chitosan, Lactoperoxidase system, Phomopsis sp. RP257, Pestalotiopsis sp, Mango

Classification Agris : H20 - Maladies des plantes
H01 - Protection des végétaux - Considérations générales

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Auteurs et affiliations

• Cissé Mohamed, UPGC (CIV) - auteur correspondant
• N'Guessan Elise, UPGC (CIV)
• Tia Vama Etienne, UPGC (CIV)
• Loiseau Gérard
• Montet Didier, CIRAD-PERSYST-UMR Qualisud (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/595926/)

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