Vanilla-flavor purple sweet potato fermented yoghourt containing taurine and preparation method thereof

Abstract

The invention discloses vanilla-flavor purple sweet potato fermented yoghourt containing taurine which is prepared from the following raw materials in parts by weight: 200-220 parts of purple sweet potatoes, 10-12 parts of dried skim milk, 0.3-0.5 part of taurine, 3-5 parts of longan pulp, 2-4 parts of bitter melon seed powder, 6-8 parts of white grape wine, 8-10 parts of hazelnut kernels, 0.6-0.8 part of vanillin, 10-12 parts of grape seeds, mulberry fruits, radix polygonati officinalis and glucose, a proper amount of streptococcus thermophilus and a proper amount of lactobacillus bulgaricus. In a production process of the purple sweet potato fermented yoghourt disclosed by the invention, purple sweet potato can be subjected to microporous treatment, so that purple sweet potato powder is fermented more completely, and yield is increased; meanwhile, the obtained purple sweet potato yoghourt is fine in tissue, is uniform in texture, is moderate in acidity and sweetness, is uniform and consistent in color and luster, and is moderate in stickiness; and the added vanillin enables the product to have unique mouthfeel; and added taurine can promote hypophyseal hormone secretion to activate a pancreatic function, so that strengthening of immunity of the organisms and anti-fatigue effect are promoted.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a vanilla-flavored purple sweet potato fermented yoghurt containing taurine and a preparation method thereof. Background technique [0002] People in our country have always had the habit of eating sweet potatoes, but they still know little about purple sweet potatoes. As a kind of black food, purple sweet potatoes have high nutritional value, health care functions and broad development prospects. Purple sweet potato, formerly known as Chuanshan purple, also known as purple sweet potato and purple sweet potato, belongs to the annual herb of Convolvulaceae. The skin of purple sweet potato is purple and nearly black, and the flesh is purple to deep purple, with bright color, hence the name. Purple sweet potato can not only be eaten fresh, but also can be processed into a beautiful, nutritious and healthy snack food. Most provinces in my country are very suitable for plant...

AI Technical Summary

Problems solved by technology

[0003] At present, the research on purple sweet potato is mainly focused on the functional aspects of its nutritional components, but there are few researches on its processed products, and there has been no in-depth research on purple sweet potato lactic acid fermentation, and there are few related reports.