Buckwheat extract, method for suppressing browning of fruit juice, and method for preparing apple juice

Abstract

The invention discloses a method for suppressing browning of fruit juice. The method comprises a first step of crushing well-washed denucleated apples in a blade crusher and adding a buckwheat extract extracted by a certain concentration of ethanol in the crushed apples; a second step of mixing the apple juice and the buckwheat extract thoroughly and juicing in a hydraulic juice extractor; a third step of standing turbid apple juice for 2 h at a room temperature and carrying out ultra-filtration treatment on the supernatant to obtain clear apple juice, then centrifuging the part close to the precipitate and carrying out ultra-filtration treatment on the supernatant to obtain the clear apple juice; and a fourth step of concentrating the clear apple juice to 15-20% by volume of an original fruit juice by heating. A suppression rate of the apple juice for enzymatic browning can reach 66.99%-71.28%; a suppression rate of the obtained apple juice for non-enzymatic browning can reach 34.78%-39.81%; a suppression rate for a maillard product can reach 30.74%-31.92%. The buckwheat extract has the characteristics of low addition amount and high activity. A natural, pollution-free and low-cost method for suppressing the browning is provided for apple juice processing industries and other industries.

Description

technical field [0001] The invention belongs to the technical field of food processing, in particular to a method for inhibiting fruit juice browning. Background technique [0002] my country is the world's largest apple producer, accounting for 2 / 5 and 1 / 3 of the world's apple area and output, and will occupy an increasingly important position in the international market. With the acceleration of the pace of life, the amount of fresh apples is decreasing year by year, while the consumption of apple juice and other apple products is increasing year by year. And due to the enhancement of people's health awareness, the world's beverage market has changed. Carbonated beverages have been considered unsuitable for teenagers and obese people because of their high sugar content. Natural and healthy pure fruit juice and fruit juice drinks will have greater development space. Apple juice is the second largest brand besides orange juice in the world, and it is a green and natural ag...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of method for suppressing fruit juice browning, although existing many compounds that are intended to solve existing technology existing can play the effect of suppressing browning, because the problem such as unsatisfactory effect or safety still has restrictive problems

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