Separation method of bacteriostatic activity components of Murraya microphylla branches and trunk and bacteriostatic agent

Abstract

The invention discloses eleven compounds separated from rhizome of Murraya microphylla. The eleven compounds comprise seven carbazole alkaloids, three terpenes and one long-chain aliphatic hydrocarboncompound. The results of wide-range activity screening show that three carbazole alkaloids A, B and C have different levels of antibacterial activity to the tested eight plant pathogens and especially, Girinimbine and Murrayanine have broad spectrum antibacterial properties and Murrayanine completely inhibits the growth of eight pathogenic bacteria and has significant broad spectrum inhibition effects than those of other compounds. Through researching chemical components of Murraya microphylla and their bacteriostatic activity, the chemical components can be used as green natural-source cropbactericides or product additives or food preservatives and can be used for preventing vegetables, fruits and crops from being damaged by plant pathogenic fungi and especially by rice magaporthe grisea.

Description

technical field [0001] The invention relates to the field of plant extraction, in particular to a method for separating bacteriostatic active components from the branches of Gourilla chinensis and a bacteriostatic agent. Background technique [0002] As people pay more and more attention to the concept of ecological balance and green health, the environment and food safety have become two major issues of concern to the whole society, while the problems of excessive pesticide residues, environmental pollution and resistance caused by chemical pesticides have become social concerns. hot spot. Therefore, the development of high-efficiency, low-toxic, low-residue green, low-carbon and environmentally friendly new formulations that can effectively control harmful organisms has become the primary goal of pesticide research and development. Botanical pesticides have become one of the hotspots in pesticide research and development because of their advantages such as easy degradatio...

AI Technical Summary

Problems solved by technology

[0006] Plant fungal diseases have always been one of the main restrictive factors in the process of crop production and product storage, which have caused serious losses in terms of product development stage, nutritional value, limited shelf life and other quality issues.

At present, plant fungi are still mainly controlled by chemical fungicides. However, they can cause problems such as resistance and toxicity residues, making the application of these chemicals more and more limited.

Images