Synergistic mixtures of chitosan and Mentha piperita L. essential oil to inhibit Colletotrichum species and anthracnose development in mango cultivar Tommy Atkins
| Autor: | Lúcia Raquel Ramos Berger, Samara Amorim de Araújo, Evandro Leite de Souza, Kataryne Árabe Rimá de Oliveira, Marcos Paz Saraiva Câmara |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
01 natural sciences Microbiology law.invention Chitosan chemistry.chemical_compound 0404 agricultural biotechnology law Botany Colletotrichum Plant Oils Mangifera Cultivar Mycelium Essential oil Anthracosis Plant Diseases biology Mentha piperita 04 agricultural and veterinary sciences biology.organism_classification 040401 food science Fungicides Industrial Fungicide Horticulture chemistry Fruit Postharvest 010606 plant biology & botany Food Science |
| Zdroj: | Food microbiology. 66 |
| ISSN: | 1095-9998 |
| Popis: | This study assessed the efficacy of chitosan (CHI) and Mentha piperita L. essential oil (MPEO) alone or in combination to control the mycelial growth of five different Colletotrichum species, C. asianum, C. dianesei, C. fructicola, C. tropicale and C. karstii, identified as potential anthracnose-causing agents in mango (Mangifera indica L.). The efficacy of coatings of CHI and MPEO mixtures in controlling the development of anthracnose in mango cultivar Tommy Atkins was evaluated. CHI (2.5, 5, 7.5 and 10 mg/mL) and MPEO (0.3, 0.6, 1.25, 2.5 and 5 μL/mL) alone effectively inhibited mycelial growth of all tested Colletotrichum strains in synthetic media. Mixtures of CHI (5 or 7.5 mg/mL) and MPEO (0.3, 0.6 or 1.25 μL/mL) strongly inhibited mycelial growth and showed additive or synergistic inhibitory effects on the tested Colletotrichum strains based on the Abbott index. The application of coatings of CHI (5 or 7.5 mg/mL) and MPEO (0.6 or 1.25 μL/mL) mixtures that presented synergistic interactions decreased anthracnose lesion severity in mango artificially contaminated with either of the tested Colletotrichum strains over 15 days of storage at 25 °C. The anthracnose lesion severity in mango coated with the mixtures of CHI and MPEO was similar or lower than those observed in mango treated with the synthetic fungicides thiophanate-methyl (10 μg a.i./mL) and difenoconazole (0.5 μg a.i./mL). The application of coatings containing low doses of CHI and MPEO may be an effective alternative for controlling the postharvest development of anthracnose in mango cultivar Tommy Atkins. |
| Databáze: | OpenAIRE |
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