Film-coating fresh-keeping fruit wax for fruits and vegetables and preparation method thereof

Abstract

The invention relates to a method for preparing a film-coating fresh-keeping fruit wax for fruits and vegetables, which mixes red lac, morpholine, propanediol and ammonia according to weight ratio, and comprises the following steps: emulsifying the mixture for 20 to 40 minutes at an emulsifying temperature of between 113 and 117 DEG C, and stirring the mixture at a speed of between 750 and 1,050 revolutions per minute; when the temperature of the solution is reduced to 60 DEG C, adding natamycin, sec-butylamine and thiabendazole L according to the following proportions; and after dispersing the mixture, reducing the temperature to 30 DEG C, taking the mixture out, and performing high-pressure homogenization on the mixture to obtain the film-coating fresh-keeping fruit wax for fruits and vegetables. The fresh-keeping fruit wax is a dark brown semi-transparent water-soluble emulsion, cannot be hardened after coating, is easy to fall off, has a quick drying speed and moderate viscosity, can perform fruit waxing through a full automatic wax-polishing machine, is bright in color and beautiful, and has lasting brightness. The concentration of the natamycin used by the fresh-keeping fruitwax has only 10<-6> order of magnitude and is in accordance with the standard of the maximum residual quantity in food stated by the national 'use sanitation standard of food additives'; therefore, the film-coating fresh-keeping fruit wax for fruits and vegetables is a safe and environment-friendly fresh-keeping material.

Description

technical field

[0001] The invention belongs to fruit and vegetable fresh-keeping agent and its preparation, in particular to a kind of fruit and vegetable coating fresh-keeping fruit wax and its preparation method. Background technique

[0002] It is a kind of method to adopt fruit wax film to keep fresh of fruits and vegetables, but the simple fruit wax that adopts is not easy to coat and form a film; adopt general solvent to dissolve fruit wax and then apply, and general solvent can pollute fruit and vegetable, and is harmful to people. harmful. Contents of the invention

[0003] The technical problem to be solved by the present invention is to provide a fresh-keeping fruit wax coated with a fruit and vegetable film and a preparation method thereof. That is to say, it is easy to apply, and does not cause pollution to fruits and vegetables, and is harmless to the human body.

[0004] Technical scheme of the present invention is:

[0005] A method for preparing fruit a...