A preparation process of jujube juice containing high water-soluble dietary fiber or concentrated jujube juice

Abstract

The invention discloses a preparation technology of red jujube juice or concentrated clear red jujube juice with high water-soluble dietary fiber content. The preparation technology comprises the following steps: selecting and cleaning red jujubes, precooking at medium temperature, removing jujube pits, pulping and removing peel; after that, carrying out primary enzymolysis and secondary enzymolysis, decoloring, filtering and carrying out enzyme inactivation; finally, sterilizing and packaging to obtain the red jujube juice or concentrated clear red jujube juice with the high water-soluble dietary fiber content, wherein in the primary enzymolysis, pectinase is used for carrying out the enzymolysis for 1-3h at the temperature of 40-55 DEG C; in the secondary enzymolysis, a complex cellulase system and the pectinase are used for carrying out the secondary enzymolysis for 1-6h at the temperature of 40-55DEG C, and the complex cellulase system is prepared from endoglucanase, exoglucanase and beta-glucosidase. The preparation technology greatly improves the content of water-soluble dietary fiber and extracts the components with physiological activity in the red jujubes to the utmost extent while guaranteeing the pure taste of the red jujube juice.

Description

technical field [0001] The invention relates to a production process of red date juice, in particular to a preparation process of red date clear juice or red date concentrated clear juice naturally containing high water-soluble dietary fiber. Background technique [0002] Jujube, also known as red jujube, dried jujube, jujube, originated in China, has been planted in China for more than 8,000 years, and has been listed as one of the "five fruits" (peach, plum, plum, apricot, jujube) since ancient times . Among them, the sugar content of jujube is as high as 60% to 80%, and 100 grams of dried dates can produce 308 kcal of heat; 100 grams of dried dates contain 1.5 grams of protein, which is 5-10 times that of apples; C 700 mg, equivalent to 100 times that of apples, is known as "live vitamin pills". In addition, it also contains 18 kinds of amino acids necessary for the human body and rich in calcium, phosphorus, potassium, iron and other trace elements. [0003] Jujube ha...

AI Technical Summary

Problems solved by technology

But jujube is a kind of seasonal plant, which is not easy to preserve. People can eat it directly after drying, or use it for food production, and some people make it into wine jujube for consumption, or even brew it into jujube wine for drinking. Play a better health care effect, especially for some frail elderly groups, the existence of alcohol will also be harmful to health

In the production process of traditional jujube juice, the uniqueness of jujube is retained, the original flavor is less, and more auxiliary materials are added, such as white sugar, glucose and food additives. After drinking, not only the effect of health care cannot be achieved, but even people’s health is still harmful. Can have adverse effects, especially for some "rich man's disease" patients

In addition, even if no additional auxiliary materials are added, the traditional production of jujube juice takes a long time to boil, and traditional high-temperature sterilization can easily destroy the water-soluble dietary fiber such as oligosaccharides, so that the original health benefits of jujube cannot be achieved; Adding enzymes will generate water-soluble dietary fiber. The traditional process cannot maintain the best medium temperature conditions for enzyme catalysis, and often damages the enzyme seriously, so it cannot increase the content of water-soluble dietary fiber, and thus cannot achieve good results. health-care effect; and the compound enzyme in the prior art can't obtain jujube juice containing high water-soluble dietary fiber to jujube pulp by enzymolysis

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