Strawberry preservation method utilizing linalool fumigation to inhibit botrytis cinerea

Abstract

The invention provides a strawberry preservation method utilizing linalool fumigation to inhibit botrytis cinerea. According to the preservation method, collected strawberries are subjected to botrytis cinerea inoculation, bacteriostatic activity shown by destroying of the linalool to the function of mitochondria of the botrytis cinerea is utilized, the low-concentration linalool is adopted to fumigate strawberry fruits, thus the infection ability of the botrytis cinerea is significantly reduced, and the gray mold morbidity of the collected strawberries is inhibited. The strawberry preservation method is efficient, safe and easy to operate, compared with current postharvest treatment, the adopted terpenoid volatile substance, namely the linalool, of natural fruits has no adverse effect onthe flavor and appearance quality of the fruits, the efficient, residue-free and pollution-free effects are achieved, and broad commercial application prospects and market value are achieved.

Description

technical field [0001] The invention relates to the field of fresh-keeping of fruits and vegetables, in particular to a strawberry fresh-keeping method using linalool to fumigate to inhibit Botrytis cinerea. Background technique [0002] Strawberry fruit is rich in nutrients. However, as a soft fruit, strawberry fruit ages faster and decays faster than ordinary fruits. Postharvest strawberries are susceptible to pathogen infection during the ripening and aging process. Composition, flavor, texture and color will all have a greater impact, which will affect the commercial acceptance of strawberry fruit and shorten the shelf life of strawberry fruit. Generally, the shelf life of strawberry fruit at low temperature (0°C) is 15 days or so, and only 3-4 days at room temperature (20–25°C). [0003] Among many pathogenic bacteria, Botrytis cinerea is the most common species, which can infect a variety of fruits and vegetables. Botrytis cinerea caused by Botrytis cinerea is one of...

AI Technical Summary

Problems solved by technology

[0008] Strawberry fruit contains nearly 300 kinds of volatile substances, including esters, aldehydes, alcohols, terpenes, ketones, furans and sulfur-containing compounds, among which esters, aldehydes and terpenes are the most abundant, however, although currently The antibacterial activity of fruit volatile substances has been studied, but the specific antibacterial activity and mechanism of various volatile substances in strawberry fruit are not clear. Linalool is the terpene volatile substance with the highest content in strawberry. This natural volatile substance is harmless to the human body and the environment. Foreign studies have found that oxygenated monoterpenes have good antibacterial activity in vitro (Screening of antifungal activities of 21 oxygenated monoterpenes in-vitro as plant disease control agents. "Allelopathy Journal 2007. 19(2):373-392.), however, there is no research on applying linalool to strawberry disease-resistant and fresh-keeping.

[0009] Membrane systems such as mitochondria of fungi provide the necessary energy for growth and infection, and destroying the mitochondrial function of Botrytis cinerea can effectively inhibit its physiological activities, thereby achieving the purpose of antibacterial (Essential oil from Chenopodium ambrosioides and main components: activity against Leishmania, their mitochondria and other microorganisms.Experimental Parasitology2014.136: 20-26.), because linalool is a small molecule fat-soluble volatile substance, it is easy to penetrate the membrane system of fungi, so it may affect the mitochondrial membrane potential of Botrytis cinerea. cause damage, thereby inhibiting its growth

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