Coffee flavoured kidney tonifying purple sweet potato fermented yoghourt and preparation method thereof

Abstract

The invention discloses coffee flavoured kidney tonifying purple sweet potato fermented yoghourt. The coffee flavoured kidney tonifying purple sweet potato fermented yoghourt 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, 15-20 parts of coffee beans, 8-10 parts of black sesame, 0.3-0.5 part of Chinese chestnut polysaccharide, 4-5 parts of hericium erinaceus powder, 6-8 parts of guava pulp, 4-6 parts of polygonatum odoratum, 2-4 parts of folium cortex eucommiae, 3-5 parts of wolfberry, 2-3 parts of semen cuscutae, 5-6 parts of freeze-dried sea cucumber powder, 10-12 parts of glucose, right amount of streptococcus thermophilus and right amount of lactobacillus bulgaricus. The purple sweet potato fermented yoghourt disclosed by the invention has the advantages that micropore treatment is firstly carried out on purple sweet potato powder in a production process, so that fermentation of the purple sweet potato powder is more thorough, and yield is increased; meanwhile, the obtained purple sweet potato fermented yoghourt is fine and smooth in tissue, uniform in texture, moderately sour and sweet, uniform in colour and moderately sticky. The coffee beans and the black sesame are added, so that the yoghourt product has unique flavours of coffee and black sesame and can improve appetite; and traditional Chinese medicines such as folium cortex eucommiae and wolfberry are added, so that the yoghourt product has the healthcare effects of tonifying kidney and building body.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to fermented yoghurt with coffee-flavored kidney-tonifying 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 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.