Management of postharvest blue mould of apple caused by Penicillium fuscoglaucum using a gel formulation containing Monarda citriodora essential oil and linalool.

Autor:	Rani P; Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi 180001, India., Sharma M; Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi 180001, India., Poovathumkadavil Thambi N; Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi 180001, India., Katoch M; Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi 180001, India.; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
Jazyk:	angličtina
Zdroj:	Journal of applied microbiology [J Appl Microbiol] 2023 Apr 03; Vol. 134 (4).
DOI:	10.1093/jambio/lxad068
Abstrakt:	Aims: This study aimed to develop essential oil-containing biopolymer-based vapor gel formulations for the postharvest management of blue mould of apples. Apples are one of the widely cultivated fruits. They are susceptible to a wide range of fungus leading to high losses in overall production. Many research articles have highlighted the applications of essential oil-biopolymer coatings in the postharvest storage of fruits. However, no studies have yet tried to explore the potential of a vapour gel formulation for postharvest applications. Methods and Results: Contaminated apples were collected from the local market. The causative fungus was isolated and identified. Minimum fungicidal concentrations of Monarda citriodora essential oil (MEO) and hexanal/linalool in the vapour phase were determined in vitro. In vitro and in vivo, checkerboard assays were used to demonstrate the synergistic activity between MEO and hexanal/linalool vapours against the isolated pathogen. MEO and linalool (M + L) combinatorial treatment indicated synergy in vivo and in vitro. In vivo treatment of M + L on apples by direct fumigation showed phytotoxicity. Gel formulations (carrageenan-guar gum, carbopol gel, and soft gel) were developed and evaluated to address phytotoxicity. M + L combination synergistically remediated the phytotoxicity in both carbopol (FICI = 0.625) and soft gels (FICI = 0.5625). The physicochemical parameters (pH, weight loss, TSS, and ascorbic acid (AsAC) of the treated apples were analysed. Reduction in weight loss and increase in AsAC were observed for treated fruits when compared to control, and no change in pH and TSS was observed. Conclusions: Biopolymer vapour gel formulations containing M + L vapours effectively protect apples from the postharvest blue mould for extended storage. (© The Author(s) 2023. Published by Oxford University Press on behalf of Applied Microbiology International.)
Databáze:	MEDLINE
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