CN-121970820-A - Grape skin dietary fiber probiotic coffee and preparation method thereof

Abstract

The invention belongs to the technical field of coffee processing, and particularly relates to grape skin dietary fiber probiotic coffee and a preparation method thereof. The grape skin dietary fiber probiotic coffee is prepared by mixing, by weight, 20-40 parts of coffee powder, 0.6-1 part of water-soluble dietary fiber, 3-5 parts of composite probiotic powder and 3-5 parts of erythritol. The water-soluble dietary fiber is prepared by cleaning grape skin residue, drying, and pulverizing to obtain grape skin powder. Adding water and cellulase into grape skin powder, performing ultrasonic extraction, inactivating enzyme, centrifuging, precipitating with ethanol, filtering, and drying to obtain water-soluble dietary fiber. The grape skin dietary fiber probiotic coffee has the characteristics of good taste, high solubility, low sugar content, low calorie, few additives and blood fat reduction.

Inventors

• KONG LINGMING
• WANG XUE
• HU YISHAN
• ZHANG XIRONG
• WU GANG
• LU ZHIQIANG
• ZHANG YAN
• YANG HUAFENG
• ZOU JIBIN
• YANG HAN
• GAO YANSONG
• Chu Chenli
• GONG LINGLI

Assignees

• 新疆乡都酒业有限公司

Dates

Publication Date

20260505

Application Date

20260225

Claims (10)

1. 1. The grape skin dietary fiber probiotic coffee is characterized by being prepared by mixing 20-40 parts of coffee powder, 0.6-1 part of water-soluble dietary fiber, 3-5 parts of composite probiotic powder and 3-5 parts of erythritol; The water-soluble dietary fiber is prepared by cleaning grape skin residue, drying, pulverizing to obtain grape skin powder, adding water and cellulase into grape skin powder, performing ultrasonic extraction, inactivating enzyme, centrifuging, precipitating with ethanol, filtering, and drying to obtain water-soluble dietary fiber.
2. 2. The grape skin dietary fiber probiotic coffee of claim 1, wherein the coffee powder is 20 parts, water-soluble dietary fiber is 0.8 part, composite probiotic powder is 4 parts, and erythritol is 4 parts.
3. 3. The grape skin dietary fiber probiotic coffee of claim 1, wherein the water-soluble dietary fiber preparation method comprises the steps of: Washing grape skin with water, drying, and pulverizing to obtain grape skin powder; mixing grape skin powder with water, regulating pH, adding cellulase, ultrasound, inactivating enzyme, centrifuging to collect supernatant, adding absolute ethanol, standing, filtering, and drying to obtain water-soluble dietary fiber.
4. 4. The grape skin dietary fiber probiotic coffee of claim 3, wherein the grape skin is dried at 60-65 ℃ for 10-12 hours and the crushed particle size is 0.15-0.18 mm.
5. 5. The grape skin dietary fiber probiotic coffee of claim 3, wherein the mass ratio of grape skin powder to water is 1:20-25.
6. 6. The grape skin dietary fiber probiotic coffee according to claim 3, wherein the pH is 3.9-4.1, and the cellulase is 0.37% -0.39% of the mass of grape skin powder mixed with water.
7. 7. The grape skin dietary fiber probiotic coffee of claim 3, wherein the ultrasonic temperature is 53-56 ℃, the power is 240-260 w, and the time is 28-30 min.
8. 8. The grape skin dietary fiber probiotic coffee of claim 3, wherein the enzyme deactivation condition is water bath for 10 min-15 min at 95 ℃ to 100 ℃; The volume ratio of the supernatant to the absolute ethyl alcohol is 1:3.8-4.2, and the standing time is 10-14 h.
9. 9. The method for preparing grape skin dietary fiber probiotic coffee according to claim 1, comprising the following steps: And uniformly mixing the coffee powder, the water-soluble dietary fiber, the composite probiotic powder and the erythritol according to the weight parts to obtain the grape skin dietary fiber probiotic coffee.
10. 10. A medicament for reducing blood fat, which is characterized by comprising the grape skin dietary fiber probiotic coffee of claim 1 and pharmaceutically acceptable auxiliary materials.

Description

Grape skin dietary fiber probiotic coffee and preparation method thereof Technical Field The invention belongs to the technical field of coffee processing, and particularly relates to grape skin dietary fiber probiotic coffee and a preparation method thereof. Background In the brewing process, grape skin residue is used as a waste in the wine production process, and a large amount of grape skin residue occupies precious land resources and also causes serious waste of resources. For a long time, the grape skin residues with high water content and difficult long-term storage are often subjected to rough treatment and even discarded as waste, which wastes precious resources and causes pollution to the environment. Meanwhile, the anti-nutritional factors such as tannin and the like contained in grape skin residue limit the further application of the grape skin residue in the field of animal feed. Grape skin residue is rich in water-soluble dietary fiber and various valuable bioactive substances such as anthocyanin, procyanidine, tannin, tartaric acid, pectin, etc. Wherein, the water-soluble dietary fiber is abbreviated as SDF. Therefore, the grape skin residue is reasonably developed and utilized, so that the utilization rate of resources can be improved, the industrial added value of the grape skin residue can be improved, and the grape skin residue has important practical significance and profound influence on promoting the green sustainable development of the grape industry. SDF is a unique fiber type, is rich in microorganisms and biological polysaccharide, is easily dissolved in water and is not decomposed by human digestive enzymes, and is known as a seventh nutrient. Currently, the methods for extracting SDF are various, such as an enzyme method, an acid-base method, a microwave method, an ultrasonic method, a combination of microwave pretreatment and ultrasonic alkali method, an ultrafiltration membrane method, a microbial fermentation method and the like. However, the prior art has a number of disadvantages. For example, fermentation processes for extracting microorganisms generally require a long period of time, ranging from days to weeks, and have low productivity. There is a need to improve the extraction efficiency of SDF. Coffee has the effect of refreshing and restoring consciousness, and is popular as a preparation. The existing coffee products contain a large amount of sugar, for example, the sugar content of the three-in-one coffee products is often 10 g/bag to 20 g/bag, obesity and blood sugar fluctuation are easily caused by long-term drinking, and the risk of type 2 diabetes mellitus is increased. For cost reasons, low-altitude apocynum venetum beans are often selected as instant coffee, the coffee beans are sour and bitter in taste, and a plurality of inferior beans which are not fully developed can exist in the beans, so that the whole quality and taste of the coffee are poor. The prior art method for improving taste comprises deep baking, spray drying, adding oil and protein, coarse grinding coffee powder, and sealing packaging. These methods, while improving the mouthfeel and flavor of the coffee, reduce the solubility of the coffee. In view of the above, it is desirable to provide a technical solution that can improve both the taste and the solubility of coffee. Disclosure of Invention In order to solve the technical problems, the invention provides grape skin dietary fiber probiotic coffee and a preparation method thereof. In order to facilitate an understanding of the present invention, materials used in the present invention and shorthand thereof are listed below: Water-soluble dietary fiber, abbreviated SDF. The first aim of the invention is to provide grape skin dietary fiber probiotic coffee which is prepared by mixing, by weight, 20-40 parts of coffee powder, 0.6-1 part of SDF, 3-5 parts of composite probiotic powder and 3-5 parts of erythritol. The SDF is prepared by cleaning grape skin residue, drying, and pulverizing to obtain grape skin powder. Adding water and cellulase into grape skin powder, performing ultrasonic extraction, inactivating enzyme, centrifuging, precipitating with ethanol, filtering, and drying to obtain SDF. Preferably, the grape skin dietary fiber probiotic coffee is prepared by mixing 20 parts of coffee powder, 0.8 part of SDF, 4 parts of composite probiotic powder and 4 parts of erythritol. Preferably, the SDF preparation method includes the steps of: Washing grape skin with water, drying, and pulverizing to obtain grape skin powder. Mixing grape skin powder with water, regulating pH, adding cellulase, ultrasound, inactivating enzyme, centrifuging to collect supernatant, adding absolute ethanol, standing, filtering, and drying to obtain SDF. Preferably, the grape skin is dried at 60-65 ℃ for 10-12 hours, and the crushed particle size is 0.15-0.18 mm. Preferably, the grape skin is dried at 60 ℃ for 10 hours and the crushed particle size is 0.18mm. Prefera