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Black grape freeze-dried powder and preparation method thereof

A technology of black grapes and freeze-dried powder, which is applied in the field of black grape freeze-dried powder and its preparation, can solve the problems of short storage period of black grapes, achieve the effect of being easy to popularize and use, and ensuring edible value

Inactive Publication Date: 2016-07-13
ANHUI JIUHE AGRI DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Black grapes taste sour and sweet, and are loved by many people. However, black grapes have a short shelf life, so how to expand the nutritional elements in black grapes is still an unknown research.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1) Soak the above-mentioned black grapes in light salt water for 20 minutes, and then clean them with clear water;

[0016] 2) Separating the grape seeds, pulp and peel, removing the seeds, then mincing the pulp, drying and grinding the peel and mixing it into the pulp to obtain grape syrup;

[0017] 3) Use buffer to adjust the pH value of the grape slurry obtained in step 2 to 3, then conduct low-temperature concentration, and concentrate the refined grape slurry to half of the original volume; then put it into a cold storage for freezing for 3 hours, and the temperature of the warehouse is controlled at -10°C;

[0018] The buffer is a phosphate buffer, which is formed by mixing 16 parts of phosphoric acid with 100 parts of water and 71 parts of disodium hydrogen phosphate and 100 parts of water; the added amount of the buffer is 0.5 times that of grape juice .

[0019] 4) Dry the grape slurry treated in step 3 at a pressure of 20 Pa, then preliminarily pulverize it, ...

Embodiment 2

[0021] 1) Soak the above-mentioned black grapes in light salt water for 30 minutes, and then clean them with clear water;

[0022] 2) Separating the grape seeds, pulp and peel, removing the seeds, then mincing the pulp, drying and grinding the peel and mixing it into the pulp to obtain grape syrup;

[0023] 3) Adjust the pH value of the grape slurry obtained in step 2 to 7 using a buffer solution, then concentrate at low temperature, and concentrate the refined grape slurry to half of its original volume; then put it into a cold storage for freezing for 5 hours, and the temperature of the warehouse is controlled at -20°C;

[0024] The buffer is a phosphate buffer, which is formed by mixing 16 parts of phosphoric acid with 100 parts of water and 71 parts of disodium hydrogen phosphate and 100 parts of water; the added amount of the buffer is 0.5 times that of grape juice .

[0025] 4) Dry the grape juice treated in step 3 at a pressure of 100 Pa, then preliminarily pulverize i...

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Abstract

The invention relates to the technical field of grape subsidiary food, in particular to black grape freeze-dried powder and a preparation method thereof.The preparation method includes: preprocessing grapes, deseeding, mincing, freezing and grinding to obtain the black grape freeze-dried powder.The black grape freeze-dried powder and the preparation method thereof have the advantages that nutrients of the grapes which is taken as a major material are kept in a state of the freeze-dried powder, original grape nutrient elements are guaranteed, normal edible value of the grapes is further guaranteed, and convenience in popularization and utilization is achieved.

Description

technical field [0001] The invention relates to the technical field of grape non-staple food, in particular to a black grape freeze-dried powder and a preparation method thereof. Background technique [0002] There are many varieties of grapes, about 8,000 in the world, which can be generally divided into two categories: wine grapes and table grapes, but there are only a dozen kinds of grapes commonly used for wine making. The world's cultivated strains include European strains and are divided into Oriental breeds and European breeds. The "seedless white", "milk" and "black chicken heart" with a long history of cultivation in China all belong to the oriental variety group. "Rose Fragrance" and "Carignan" belong to the European variety group, summer black grape, also known as summer black seedless, oriental black pearl. Originally produced in Japan, European and American hybrids, it is an excellent variety with many advantages. Disease resistance, high yield, very early ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L19/00A23P10/40
Inventor 周东伟
Owner ANHUI JIUHE AGRI DEV
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