Preparation method of germ bean curd skin

Abstract

The present invention relates to a preparation method of germ bean curd skin. The preparation method comprises the following steps: (1) a germ mixture consists of wheat germ and corn germ at a ratio of 3 : 1, water is added into the germ mixture, the germ mixture is soaked for 2-4 h, and the soaked germ mixture is ground to obtain germ slurry material; ( 2) soy protein isolate at 35% of the use amount of the germ mixture is weighed, sucrose fatty acid ester at 0.2-0.3% of the weight of the germ slurry material is weighed, the two weighed materials are mixed, the mixture is added into the germ slurry material, and the mixture is subjected to twice homogenization to obtain homogeneous liquid; (3) soy soybeans are soaked in water and the obtain water drained soybeans and water are added into a grinder to conduct grinding to obtain soybean slurry material; and (4) the homogeneous liquid and the soybean slurry material are mixed at a ratio of 1 : 3-4 in a molding groove, the mixed slurry material form a film at 90 DEG C, the film is lifted up and drained, and the drained film is dried at 65 DEG C to obtain the finished products. The prepared germ bean curd skin is high in yield and strong in gluten power. The germ bean curd skin has a special color and luster, and flavor, ensures the nutritional ingredients of the wheat germ, also improves the utilization rate of the germ, and enriches the market of the bean curd skin.

Description

technical field [0001] The invention relates to the field of bean products and processing, in particular to germinated bean curd and a preparation method thereof. Background technique [0002] Tofu skin, also known as rotten clothing, is a soybean protein-lipid film. It is a soy product that our people love, and it is also a public health food suitable for all ages. The preparation and eating methods of tofu skin have long been recorded in ancient books. With a history of two thousand years, Zhu Xi, a famous scholar in the Song Dynasty, wrote "Poems on Tofu" saying: Planting beans and seedlings is rare, exhausting your heart and suffering, knowing the Huainan technique early, and getting spring cloth when you sit comfortably. The poem describes the hard work of farmers planting beans, and they knew that they could make profits and accumulate wealth if they had mastered the production technology. Li Shizhen also said in "Compendium of Materia Medica" that soybeans are soaked...

AI Technical Summary

Problems solved by technology

[0008] If wheat or corn germ is added to soybean milk to make soybean skin, there will be the following problems during processing: (1) simply replacing part of soybean with wheat germ, its protein and lipid content are all low, soybean protein content is about 40%, fat The protein content of wheat germ is about 20%, while the protein content of wheat germ is about 30%, and the lipid content is about 10%. Simply using the compound of wheat germ and soybean as the base material to produce germ bean skin, the yield of the produced germ bean skin is low. The gluten strength can not meet the requirements; (2) The lipid content of corn germ is relatively high, reaching about 50%, but its protein content is low, only about 15%

Wheat germ and corn germ are compounded to replace part of soybeans to process germinated bean skin. The lipid content can meet the requirements, but the protein content still cannot meet the requirements for making bean skin; (3) due to the relatively high lipid content of corn germ Large, when the germ is ground and processed, free lipids are easy to precipitate, resulting in uneven quality of bean skin

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