Preparation method and application of tupistra extract

Abstract

The invention discloses a preparation method and application of a tupistra extract. According to the preparation method of the tupistra extract, with tupistra rhizomes as raw materials and ethanol water or ethyl acetate as a solvent, extraction is conducted, then through concentration and drying, the tupistra extract is obtained, and when the solvent is ethanol water, the volume fraction of ethylalcohol is not smaller than 60%. According to the preparation method, ethanol water or ethyl acetate is used as the solvent for preparing the tupistra extract, one-step completion is achieved, multiple solvents do not need to be adopted for repeated extraction, the technical operation is simple, the extraction rate is high, the cost is low, and the method is environmentally friendly; through the prepared exact, growth of filamentous fungi can be effectively inhibited, particularly, the inhibition function on rotten fungi such as penicillium expansum, penicillium italicum wehmer, penicillium digitatum, aspergillus niger, rhizopus stolonifera and botrytis cinereal is obvious, the effect is good at low concentration (1mg / mL), the antimicrobial spectrum is wide, no harmful organic solvent residues exist, the method is environmentally friendly, the toxic or side effect on a non-target is small, and the method accords with an environment-friendly sustainable development idea.

Description

technical field [0001] The invention relates to a preparation method and application of an open arrow extract and belongs to the field of open arrow extraction. Background technique [0002] With the improvement of living standards, more and more people have begun to pay attention to the safety of preservatives in fruits and vegetables and other foods during storage. Traditional preservatives include benzimidazoles, such as carbendazim, tecdol, benlatx, Thiophantine, etc., as well as sec-butylamine and its derivatives, Xianbao, Baiduza, etc., are mostly chemically synthesized, and overdose drug use is common in some regions or crops, posing a risk to the quality and safety of agricultural products. [0003] Although physical preservation methods such as controlled atmosphere and refrigeration can effectively delay the physiological and biochemical processes of fruits and vegetables after harvesting and maintain the freshness of fruits, their disadvantages are: once they leav...

AI Technical Summary

Problems solved by technology

[0003] Although physical fresh-keeping methods such as controlled atmosphere and refrigeration can effectively delay the physiological and biochemical processes of fruits and vegetables after harvest and maintain the freshness of fruits, their disadvantages are that once they leave the original physical environment, especially after mechanical damage, they are easily infected by microorganisms, especially fungi. mildew and rot

Although there are related reports on the use of the open arrow extract for antibacterial in the prior art, there are defects such as complex process, high solvent toxicity, large usage, high cost, large residue, and poor antibacterial effect of the extract.

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