Nanometer selenium-enriched tea powder dried beancurd sticks and preparation method thereof

Abstract

The invention relates to nanometer selenium-enriched tea powder dried beancurd sticks and a preparation method thereof. The preparation method of the nanometer selenium-enriched tea powder dried beancurd sticks comprises the following steps of performing preliminary crushing on selenium-enriched tea scraps, and performing extraction by an ultrasonic-assisted hot water extraction method to obtain aselenium-enriched tea extraction solution; performing acidolysis and high-pressure micro jet homogenizing treatment on extracted filter residue solid tea powder to obtain nanometer selenium-enrichedtea powder; taking soybeans, performing peeling, performing soaking, performing grinding to obtain pulp, and cooking the pulp to obtain wet beancurd sticks; and taking the selenium-enriched tea extraction solution, nanometer-level selenium-enriched tea powder and boiled soybean pulp which is not solidified yet, performing mixing in proportion to obtain a mixture, uniformly sprinkling the mixture onto the wet beancurd sticks, and performing baking to obtain the nanometer selenium-enriched tea powder dried beancurd sticks. According to the nanometer selenium-enriched tea powder dried beancurd sticks, the contents of organic selenium, tea polyphenols and nanometer dietary fibers in the dried beancurd sticks and bioactive components in the dried beancurd sticks are increased, besides, the yield of the dried beancurd sticks is also increased, and the nanometer selenium-enriched tea powder dried beancurd sticks are high-grade dried beancurd sticks concurrently having good mouth feel and characteristics of health-care foods.

Description

technical field [0001] The invention relates to bean curd sticks and a preparation method thereof, in particular to nano selenium-enriched tea powder bean curd sticks and a preparation method thereof, belonging to the technical field of food processing. Background technique [0002] Soybean is a high-quality source of plant protein because of its high protein content and amino acid composition similar to the needs of the human body. The processing of bean curd sticks began in the Tang Dynasty and has a history of more than 1,000 years. It is boiled soybean milk. After a certain period of heat preservation, the surface of the bean curd will produce an oily film, which is exposed and dried. It is one of the famous national specialty foods in my country. one. Yuba is a high-grade product in soybean products, in which soybean protein content is about 40%, fat is 20%, and it is rich in soybean saponin, riboflavin, amino acid and other nutrients needed by human body. Bean curd st...

AI Technical Summary

Problems solved by technology

For example, the cost of tea leaves is high, and the extraction rate of active ingredients in tea leaves is low by the conventional hot water extraction method, and the dietary fiber in tea leaves has not been effectively utilized; vulnerable to damage