Preparation method of passion fruit shellac fruit preservative

Abstract

The invention discloses a preparation method of a passion fruit shellac fruit preservative. The preparation method comprises the following steps: heating glycerol to 110 DEG C, adding shellac, performing stirring, and keeping the stirring temperature at 100 DEG C to dissolve the shellac; adding oleic acid after the shellac is completely dissolved, and performing stirring; and adding sodium carbonate for adjusting the pH value of the solution to 7 or adding ammonia water for adjusting the pH value of the solution to 7. The shellac is a natural product, meets the national food safety standard, can be used in the fields of food, medicines and the like, has medicinal value, is non-toxic and harmless to the human body, and can be used by consumers at ease; a shellac film formed by the shellac has relatively good flexibility, a complete film form can be kept for a long time, the fresh-keeping effect is relatively strong, the pH value of the solution is neutral, and therefore the fruit peel cannot be damaged; and the shellac fruit preservative has good water solubility, the surface gloss of fruits is increased after the shellac fruit preservative is smeared, but the shellac film cannot beseen, and the shellac film disappears after being soaked in water for several minutes, so that the shellac fruit preservative is convenient and safe to use.

Description

technical field [0001] The invention relates to the technical field of fruit preservation, in particular to a preparation method of a passion fruit shellac fruit preservation agent. Background technique [0002] my country is a big country of fruit production. Since the reform and opening up, fruit production has developed rapidly. Especially since the 1990s, China's fruit production has leapt to the first place in the world. With the continuous improvement of people's living standards, some changes have taken place in the structure of my country's agricultural industry. Fruits are the agricultural products second only to grains in the world. Fruits have become the third largest industry in my country's planting industry after grains and vegetables. my country has a long history of fruit cultivation and abundant resources, and is the birthplace of various fruits in the world. Fruit fresh-keeping and storage is the continuation of agricultural production, and although the fr...

AI Technical Summary

Problems solved by technology

But its solution has a relatively pungent smell. The raw materials are industrial raw materials, and the wax film formed is insoluble in water. It is difficult for consumers to clean it, and there are certain food safety hazards.