Dietary fiber enriched compound fruit and vegetable purple sweet potato fermented yogurt and preparation method thereof

Abstract

The present invention discloses dietary fiber enriched compound fruit and vegetable purple sweet potato fermented yogurt. The yogurt is prepared from the following raw materials in parts by weight: 200-220 parts of purple sweet potatoes, 10-12 parts of skimmed milk powder, 6-7 parts of peanuts, 4-5 parts of mung beans, 5-8 parts of arctium lappa leaves, 2-3 parts of miquel linden flowers, 4-6 parts of hypsizygus marmoreus, 7-9 parts of yacon, 3-5 parts of coconut powder, 2-4 parts of towel gourd flowers, 6-8 parts of mangosteens, 5-6 parts of pumpkin flesh, 10-12 parts of glucose, an appropriate amount of streptococcus thermophilus, and an appropriate amount of lactobacillus bulgaricus. In the production process of the purple sweet potato fermented yogurt, firstly the purple sweet potato powder is subjected to micro-porous treatment, which can enable the purple sweet potato powder to be fermented more completely, increase the yield, and at the same time, enable the obtained purple sweet potato yogurt to be delicate and even in texture, moderate in sourness and sweetness, uniform in color and luster, and appropriate in viscosity. The added peanuts, mung beans, arctium lappa leaves, etc. contain rich nutrients and the dietary fibers, and improve the nutrient structure, so that the yogurt has very good health-care efficacies.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a fermented yoghurt rich in dietary fiber and a compound fruit and vegetable purple sweet potato 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 ve...

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.