Sweet potato and soybean composite fermented beverage and preparation technology thereof

Abstract

The invention relates to a sweet potato and soybean composite fermented beverage and a preparation technology thereof, belonging to the field of a non-alcohol beverage. The preparation technology comprises the following steps of: mixing sweet potato juice with soybean milk according to the volume ratio of 3-5:1 to form into a fermenting base material; preparing culture solution with low-fat milk; homogenizing, sterilizing and cooling; vaccinating lactic acid bacteria; cultivating in an activating way; acclimatizing and cultivating to form into several generations with the definite proportion between the fermenting base material and the defatted milk to be taken as the final fermenting strains; and refrigerating the prepared fermenting liquid and ripening to be the finished product. The technical indexes of the prepared fermented beverage are as follows: the protein is larger than and equal to 2.5375mg / mL, the flavone is larger than and equal to 0.045525mg / mL, the polysaccharide is larger than and equal to 1.498mg / mL, the lipid is larger than and equal to 0.6707mg / mL, the acidity is 1.3-1.4, no coli group, no pathogenic bacteria, and the viable count of the lactic acid bacteria is larger than 4.55*10<6> / ml. The prepared sweet potato and soybean composite fermented beverage integrates the trophism of the soybean with the hygienical capability and the flavor of the sweet potato into a whole, not only enriches the new species of the yoghourt, but also explores a new approach for the deep processing of the sweet potato.

Description

technical field [0001] The invention relates to a composite fermented beverage, in particular to a sweet potato and soybean composite fermented beverage and a preparation process thereof, belonging to the field of non-alcoholic beverages. Background technique [0002] Sweet potatoes are rich in polysaccharides, dietary fiber, carotene, linoleic acid, dehydroandrosterone, flavonoids, vitamins A, B, C, E, and more than 10 trace elements such as potassium, iron, copper, selenium, and calcium. The nutritional value is very high, and it is called the most nutritionally balanced health food by nutritionists, and it has a good anti-cancer effect. Recently, the Japanese Institute of Cancer Prevention ranked the anti-cancer properties of twenty common vegetables from high to low, and the anti-cancer effects of sweet potatoes topped the list. Eating sweet potatoes can lose weight, keep fit, prevent cardiovascular disease, defecate and detoxify, and contain a lot of dietary fiber; soy...

AI Technical Summary

Problems solved by technology

From the current point of view, sweet potato food mostly occurs in the form of dried sweet potato, sweet potato chips and French fries. more common

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