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Mireya Esbeiddy Cha´vez-Magdaleno,Ramse´s Ramo´n Gonza´lez-Estrada,Anelsy Ramos-Guerrero,Maribel Plascencia-Jatomea,Porfirio Gutie´rrez-Martı´nez 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.6
Preventive and curative activity of postharvest treatments with chitosan nanoparticles (CS) and chitosan biocomposites loaded with pepper tree essential oil (CSPEO) against anthracnose were evaluated on Avocado (Persea americana) cv. Hass artificially inoculated in rind wounds. After 10 days of storage significant preventive and curative activity against Colletotrichum gloeosporioides was observed with the absence of internal damage by applying CS and CS-PEO. Quality parameters like water losses and firmness changes were assessed on fruit treated. CS and CS-PEO were effective to reduce water losses and firmness losses.
Anelsy Ramos-Guerrero,Ramse´s Ramo´n Gonza´lez-Estrada,Greta Hanako-Rosas,Silvia Bautista-Ban˜os,Gustavo Acevedo-Herna´ndez,Martin Ernesto Tiznado-Herna´ndez,Porfirio Gutie´rrez-Martı´nez 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.3
Soursop (Annona muricata) is a tropical fruit that can be infected by Colletotrichum gloeosporioides and Rhizopus stolonifer. Traditional methods used for postharvest disease control include the application of fungicides, however due to their excessive use, as well as their persistence in the environment, the development of new strategies that control pathogens are required. The application of chitosan (Chi), salicylic acid (SA) and methyl jasmonate (MJ) is an environmentally-friendly alternative with antimicrobial properties and also induces defense mechanisms in plant tissues. In this study, Colletotrichum was reactivated and Rhizopus was identified using morphological features and molecular tools. In vitro, the application of 0.5 and 1.0% of Chi alone or in combination with SA and MJ decreased mycelial growth and sporulation, a complete inhibition of spore germination was obtained. Thus, the application of Chi in combination with SA and MJ could be a smart strategy to inhibit the development of pathogens that attack soursop fruit.