Use of medicinal plant extracts and chitosan as an alternative to chemicals to control mango postharvest anthracnose
1 Food Security and Nutrition Research Group, Swiss Centre for Scientific Research in Côte d’Ivoire, Côte d’Ivoire.
2 Biochemistry -Genetics Department, faculty of Biological Sciences, Peleforo Gon Coulibaly University, Korhogo, Côte d’Ivoire.
3 Fruit and Vegetable Physiology Laboratory (EA 4279), Agricultural Sciences Department, Faculty of AgroSciences, Avignon University, F-84916 Avignon, France.
4 Agricultural forestry and Environmental Engineering, Polytechnique University of Man, BP 20 Man, Côte d’Ivoire.
5 Laboratory of Food Biochemistry and Tropical Products Technologies, Food Science and Technology Department Nangui Abrogoua University, Abidjan, Côte d’Ivoire.
Research Article
World Journal of Advanced Research and Reviews, 2023, 19(02), 642–650
Article DOI: 10.30574/wjarr.2023.19.2.0671
Publication history:
Received on 07 April 2023; revised on 08 August 2023; accepted on 11 August 2023
Abstract:
Anthracnose caused by Colletotrichum gloeosporioides is one of the most important post-harvest diseases affecting mangoes’ post-harvest management, resulting in huge post-harvest losses. However, the present research aims to study the antifungal activity of chitosan and aqueous extracts of Tectona grandis L. and Artemisia annua L. leaves on the development of C. gloeosporioides. In the “in vitro” evaluation, chitosan at the concentration of 2.5% (v/v) and the two extracts evaluated at 10% (w/v) showed a fungicidal effect on C. gloeosporioides. While for the evaluation of mango fruit (“in situ”), the anthracnose disease was controlled with 2.5% (v/v) chitosan and 10% (w/v) aqueous extracts applied after inoculation of C. gloeosporioides. The chitosan and aqueous extract treatments did not affect the acidity and pH of the mango. However, all products used on mango fruit reduced mass loss and delayed the decline in firmness, skin greenness and ascorbic acid content after ripening. They also showed a beneficial effect on total soluble solids content. A concentration of 2.5% chitosan and 10% aqueous extracts effectively inhibited anthracnose disease and improved some ripening parameters of mangoes. Therefore, Chitosan and aqueous extracts of A. annua and Teak (Tectona grandis L.) leaves can be used as an alternative to synthetic chemicals to substantially reduce postharvest mango anthracnose.
Keywords:
Antifungal activity; Aqueous extract; Artemisia annua L; Mango anthracnose; Tectona grandis L
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