Purple sweet potato full-nutrition drink and method for preparing same

Abstract

The invention provides purple sweet potato full-nutrition drink and a method for preparing the same. The method comprises the following process steps of: cleaning purple sweet potatoes, peeling, boiling, gelatinizing and pulping. The method is characterized in that: the boiled purple sweet potatoes are subpackaged and then deep-frozen to below 35 DEG C below zero within 24 hours; the deep-frozen purple sweet potatoes are preferred to be stored in a refrigerator below 18 DEG C below zero; before deep freeze, the boiled purple sweet potatoes are preferred to undergo pre-cold treatment; and in the gelatinization step, the deep-frozen purple sweet potatoes are put in a sandwich pot and gelatinized in a material-to-water ratio of 1:3, and after boiling, the temperature is kept for 40 minutes, and then the purple sweet potatoes undergoes pulping. The drink, which contains anthocyanin, has high oxidation resistance which is 20 times that of vitamin C and 50 times that of vitamin E, and has various functions such as oxidation resistance, ageing resistance and cancer resistance. The drink does not contain any pigment, is rich in dietary fiber and nutrient content and retains all nutrient content of the raw materials. The invention provides the nutritional, health-care and convenient drink for people.

Description

technical field [0001] The invention relates to a purple sweet potato full-nutrition beverage and a preparation method thereof, belonging to the technical field of deep processing of agricultural products. Background technique [0002] In the prior art, as the application number is 00113012.9 invention patent publication discloses a kind of fresh potato juice is mixed with beverage, its fresh potato juice, water accounted for the weight ratio is respectively 20 ~ 100%, 80 ~ 0%; The production method comprises the following steps of preparing raw potato juice and water, sterilizing and filling. [0003] Another example is that the application number is 02139773.2 invention patent publication, which discloses a health beverage and a production method thereof that are processed from purple sweet potato as a main raw material. The proportion accounts for 1.5%, 0.08%, 0.6% and 2% of the water weight respectively; the production method comprises slicing, roasting, crushing, boili...

AI Technical Summary

Problems solved by technology

[0004] In addition, the application number is 200810054472.X invention patent publication, which reports a production method and products of purple sweet potato fruit vinegar beverage, which solves the problems of single nutrition and poor mouthfeel of existing purple sweet potato beverage