Purple sweet potato milky beverage and processing technology thereof

Abstract

The invention relates to a purple sweet potato milky beverage and a processing technology thereof and belongs to the technical field of health-care foods. The purple sweet potato milky beverage is characterized in that natural food materials are adopted and artificially synthesized essence, artificially synthesized pigments and artificially synthesized preservatives are not added. By taking fresh purple sweet potatoes as a main raw material, the purple sweet potato milky beverage is prepared through the steps: cooking and gelatinization, high pressure homogenization, mixing, sterilization and packaging. According to raw material treatment, the raw material is firstly cooked and then smashed and oxygen is isolated by water, so that enzymatic oxydative browning of anthocyanins from purple sweet potatoes is avoided. According to the processing method, high pressure homogenization is adopted, so that layered settlement of the product is avoided and the product stability is improved; in addition, an auxiliary material milky powder is further introduced, so that the texture, the taste, the flavor and the nutritional value of the purple sweet potato milky beverage are obviously improved and enhanced. The obtained purple sweet potato milky beverage is bright and attractive in color, and is fine, smooth and lubricant in organization structure. The purple sweet potatoes and the milk bring out the best in each other in flavor, the content of sugar is lower than that of a conventional beverage, and the purple sweet potato milky beverage is low in quantity of heat and high in health-care value.

Description

technical field [0001] The invention relates to a processing method of purple sweet potato milk drink, which belongs to the technical field of health food and also belongs to the technical field of deep processing of agricultural products. Background technique [0002] Purple Sweet Potato (Purple Sweet Potato), also known as black potato, purple sweet potato, purple heart sweet potato, etc., is an annual herbaceous plant of Convolvulaceae, and the color of the potato flesh is purple to dark purple. Purple sweet potato is rich in vitamin A, vitamin C and dietary fiber. Among them, vitamin A can improve human eyesight, vitamin C can promote the normal synthesis of collagen protein, and prevent the occurrence of scurvy. The dietary fiber in purple sweet potato is mostly soluble dietary fiber, which has the characteristics of good texture and delicate taste. Fiber has preventive and therapeutic effects on various diseases such as diabetes, heart disease, hypercholesterolemia an...

AI Technical Summary

Problems solved by technology

[0004] The research and development of purple sweet potato in beverages is still rare in China, and due to the large starch content of purple sweet potato beverages, the stability is not easy to control, and it is easy to cause stratification, clots, and water separation during the shelf life of the product.