Tea-flavor selenium-rich fermented bean curd and preparation method thereof

Abstract

The invention relates to tea-flavor selenium-rich fermented bean curd and a preparation method thereof. The method mainly comprises the following steps: primarily crushing selenium-rich tea leftovers,and extracting a selenium-rich tea extracting liquid by an ultrasonic-assisted hot water extraction method; subjecting the extracted filter residue solid tea powder to acidolysis and airflow mill superfine grinding treatment so as to obtain micron selenium-rich tea powder; peeling and soaking soybeans, mixing the soybeans with clear water and the selenium-rich tea extracting liquid, conducting pulp grinding, boiling and curding to obtain selenium-rich tea firm tofu blank, and fermenting the blank until the surface is full of white mycelia; and mixing the micron selenium-rich tea powder with fermented bean curd pickling ingredients according to a proportion, and further pickling the tofu blank to obtain the tea-flavor selenium-rich fermented bean curd. The method carries out complete and higher value application on the selenium-rich tea leftovers, enhances the content of bioactive components in the fermented bean curd such as organic selenium, tea polyphenols and dietary fibers, and adds a fresh tea fragrance to traditional fermented bean curd. The prepared tea-flavor selenium-rich fermented bean curd has an excellent taste and the advantages of health-care foods.

Description

technical field [0001] The invention relates to tofu and a preparation method thereof, in particular to tea-flavored selenium-enriched bean curd and a preparation method thereof, belonging to the technical field of food. Background technique [0002] Fermented bean curd is a characteristic traditional delicacy that is widely loved in my country and Southeast Asia. It has the advantages of high nutrition, easy digestion and absorption, delicate taste and strong fragrance. It can be eaten alone or used to cook dishes with unique flavors. The main raw material of fermented bean curd, tofu itself is a soy product with high nutritional value, with a protein content of 15% to 20%, equivalent to meat, and rich in calcium. Fermented bean curd is fermented by mold, which decomposes the phytic acid in beans, making minerals such as iron and zinc in soybeans that have a low absorption rate easier to be absorbed by the human body, and also makes protein digestion and absorption rate hig...

AI Technical Summary

Problems solved by technology

Although this invention combines the characteristics of green tea with fermented bean curd to a certain extent, the cost of tea leaves is higher than the leftovers of selenium-enriched tea, while the content of organic selenium in ordinary tea leaves is significantly lower than that of selenium-enriched tea; The hot water extraction method has a low extraction rate of active ingredients in tea and has not effectively utilized the dietary fiber in tea