Momordica grosvenori concentrated juice and preparation method thereof

Abstract

The invention provides a siraitia grosvenorii concentrated juice preparation method, which comprises: A) sterilizing siraitia grosvenorii, crushing, extracting, and carrying out solid-liquid separation to obtain an extract liquid; b) mixing the leach liquor, a color fixative, cation exchange resin and an acidophilic leavening agent for fermentation, and performing solid-liquid separation to obtain acidophilic fermentation liquor; c) adjusting the pH value of the acidophilic fermentation liquor to be alkaline, adding silica gel and a basophilic leavening agent for fermentation, and performing solid-liquid separation to obtain basophilic fermentation liquor; d) adjusting the pH value of the basophilic fermentation liquor to be acidic, passing through a nanofiltration membrane, and collecting trapped fluid; and concentrating and sterilizing the trapped fluid to obtain the momordica grosvenori concentrated juice. According to the method, the energy value can be reduced at the same time, the green taste similar to that of green grass is eliminated, and certain aromatic flavor substances are contained; meanwhile, the method does not need an independent decolorizing procedure, browning can be effectively inhibited in the concentrated juice fermentation process, and the browning substrate is greatly reduced in the fermentation process, so that the concentrated juice is not prone to secondary browning in the subsequent concentration, sterilization and storage processes.

Description

technical field [0001] The invention relates to the technical field of food, in particular to a concentrated monk fruit juice and a preparation method thereof. Background technique [0002] Luo Han Guo began to be included in the "Chinese Pharmacopoeia" in 1977, and belongs to Chinese medicinal materials with the same origin as medicine and food. Traditional Chinese medicine believes that Luo Han Guo is sweet, sour, cool in nature, and returns to the lungs and large intestine meridian. Clinically, it mainly treats diseases such as lung heat dryness cough, sore throat and aphonia, intestinal dryness and constipation. Moreover, Luo Han Guo also has a good health-preserving effect, which can clear away heat and cool blood, promote body fluid and relieve cough, smooth intestines and detoxify, rejuvenate skin and face, moisten lungs and reduce phlegm, prolong life and prolong life, and maintain a pleasant complexion. [0003] As a new generation of natural sweetener, Luo Han Gu...

AI Technical Summary

Problems solved by technology

Furthermore, if the concentrated monk fruit juice is not properly treated at high temperature, it is very easy to cause the concentrated juice to have a green taste similar to fresh fruit, which will affect the taste and quality of the concentrated monk fruit juice

[0006] CN108813257A discloses a preparation method of Luo Han Guo concentrated juice, which is formed by selecting materials, exposing to the sun, crushing materials, cooking, filtering and concentrating. The bitter substances are leached together, causing the concentrated juice to contain bitterness; at the same time, the process of exposing the Luo Han Guo will directly lead to the reduction of solids in the extraction step, which directly reduces the product yield; at the same time, it contains a large amount of sugar. sugar-reduced

[0007] At present, most of the processes of traditional concentrated juice basically do not remove nutrients such as carbohydrates and fats that can easily cause blood sugar to rise; some do not remove the browning during the production process and the subsequent secondary browning that may occur Improvement has resulted in the obtained concentrated juice showing a certain color or gradually showing color in the later stage of storage; at the same time, repeated membrane filtration, adsorption and other processes have also led to the removal of a large number of functional substances and wasted; Its own green taste similar to grass has not been improved in a targeted manner

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