Natural products for postharvest decay control in horticultural produce: a review

Abstract

Purpose of review: This review offers a perusal of reports on the use of natural products for postharvest decay control in fresh horticultural produce. In light of research findings, it considers the use of natural products for postharvest decay control in horticultural produce. Main findings: Important wastage of produce occurs in the postharvest chain, of which decay, caused by various postharvest pathogens, dictates a considerable part. The use of synthetic fungicides has faced limitations and restrictions owing to their teratogenicity, acute residual toxicity, long degradation period, and other effects on human health and the environment. Biodegradable and ecofriendly natural compounds such as flavour compounds, acetic acid, jasmonates, glucosinolates, chitosan, essential oils and active principles of some plants have gained importance and attention for their use as decay-control agents and safer alternatives to synthetic chemicals. Encouraging results on the use of natural products to control postharvest decay indicate the possibility of developing natural fungicides that would be as effective as synthetic fungicides, and yet are safe for man and environment. Directions for future research: Coordinated and continuous search for natural products may yield safer alternatives for postharvest decay control. Research efforts need to be directed towards establishing the mode of action of the products so as to provide important guidance for their application. Natural products that are found efficacious during in vitro and in vivo studies should be considered for commercial application. Emphasis should be placed on developing these products which can be used easily by the end users.