Method for preparing fresh-keeping film coating fruit wax for fruits and vegetables

Abstract

The invention discloses a method for preparing fresh-keeping film coating fruit wax for fruits and vegetables, and relates to a fresh-keeping agent for fruits and vegetables. The method for preparing the fruit wax mainly comprises the following steps of: selecting morpholine and ammonia hydroxide as raw materials, adding water into the raw materials, fully mixing the raw materials, starting a stirrer and heating the mixture at the same time; adding modified resin and red lac into the mixture after the mixture is fully heated and stirred uniformly, and stirring the mixture to form solution; adding isolated soy protein into the solution, and stirring the solution; adding medicinal propanediol and medicinal propyl p-hydroxybenzoate into the solution, lightly stirring the solution, shutting down the stirrer after the solution is fully mixed, and dispersing the solution for 40 minutes; adding fatty acid and surfactant into the mixed solution, and lightly stirring the solution; adding isopropanol, antifoaming agent and a proper amount of water into the stirred solution; and lightly stirring the solution and then cooling the solution to 37.8 DEG C to form fruit wax. The method has the advantages that: the additive and the solution can fully dissolve the acid washing substances such as resin and red lac during preparation, and meanwhile the whole process is implemented in a closed pressure container, so the method does not discharge ammonia; and the whole preparation process for preparing the fruit wax product does not generate other side products, so the method is convenient for popularization and use.

Description

technical field [0001] The invention relates to a fresh-keeping agent for fruits and vegetables, in particular to a method for preparing fruit wax coated with a fresh-keeping film for fruits and vegetables. Background technique [0002] Fruit wax is also known as a fruit coating agent, which covers the surface of fruits to play the role of antisepsis, insurance, quality preservation, inhibition of water evaporation, prevention of microbial invasion, increase of fruit surface finish and brightness, and prolong storage. [0003] In China, the research on fruit wax mainly focuses on two aspects, one is a low-molecular chemical wax represented by a polyethylene liquid film, and the other is a high-molecular natural wax represented by "chitin". But these two kinds of waxes have deficiencies, one is that the color and luster and brightness after processing the fruit are not good, and the function of improving the sensory quality of the fruit is relatively poor; the other is that t...

AI Technical Summary

Problems solved by technology

But these two kinds of waxes have deficiencies, one is that the color and luster and brightness after processing the fruit are not good, and the function of improving the sensory quality of the fruit is poor; the other is that the dosage form is either too viscous or too thin, which is not suitable for waxing equipment. use, not easy to promote

It is worth noting that the production of fruit wax will be accompanied by the production of ammonia gas, which will lead to the production of some by-products, which will affect the purity of fruit wax production.