Abstract
To determine the antibacterial effect of 34 plant essential oils on Alternaria alternata, 34 plant essential oils such as asarum essential oil, garlic essential oil, and mustard essential oil are used as inhibition agents to isolate A. alternata from citrus as indicator bacteria, through the bacteriostasis test and drug susceptibility test, the types of essential oils with the best inhibitory effect were screened and their concentration was determined. The results showed that the best inhibition effect was mustard essential oil with a minimum inhibitory concentration of 250 μl/L and a minimum bactericidal concentration of 250 μl/L. Followed by the Litsea cubeba essential oil and basil oil, the minimum inhibitory concentration is 500 μl/L.
Highlights
Citrus is a general term for orange, mandarin, orange, kumquat, pomelo, and medlar
It can be seen that A. alternata is one of the main diseases of citrus after harvest.At present, chemical fungicides are widely used, and imazalil, carbendazim, etc. are used in the postharvest control of citrus [6]
(2) Alternaria alternata, a pathogenic fungus isolated from the citrus fruits stored after harvest, was deposited in the laboratory of the Institute of Food Science and Technology, Chengdu Academy of Agriculture and Forestry Sciences
Summary
Citrus is a general term for orange, mandarin, orange, kumquat, pomelo, and medlar. Citrus is the world's largest fruit, rich in sugar, organic acids, mineral elements and other substances, because of its high nutritional value and special taste odor and is deeply loved by consumers [1,2]. A. alternata can cause black rot and brown spot disease in lemon, golden pomelo and orange [3,4,5]. It can be seen that A. alternata is one of the main diseases of citrus after harvest.At present, chemical fungicides are widely used, and imazalil, carbendazim, etc. Most fungicides are sprayed directly onto the skin of fruits and vegetables, which cause serious health effects after eating and have an impact on the environment [7]. It is increasingly urgent to explore new environmentally friendly fungicides that are low in toxicity and effective
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