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Edible fresh keeping agent as well as preparation method and application thereof

A fresh-keeping agent and composite fresh-keeping technology, which is applied in the field of fresh-keeping agents, can solve the problems of being unable to realize easy cleaning without residue and high cost

Pending Publication Date: 2016-02-24
TANGSHAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, to make up for the above two types of grape preservatives, which are toxic and harmful to the human body and the environment, have strict use conditions, high cost, and cannot be easily cleaned without residue, so as to simultaneously have antibacterial properties. Chitosan, a macromolecular compound with dual characteristics of inhibiting respiration, is the core fresh-keeping component. Chitosan with different molecular weights is compounded in a certain proportion to make a truly green, environmentally friendly, easy-to-clean, and edible grape preservative without residue.

Method used

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  • Edible fresh keeping agent as well as preparation method and application thereof
  • Edible fresh keeping agent as well as preparation method and application thereof
  • Edible fresh keeping agent as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0082] Embodiment 1—edible preservative

[0083]Food-grade vitamin C is mixed with the aqueous solution that is 2% food-grade vitamin C by mass percentage; The sugar is mixed evenly, and finally the uniformly mixed chitosan is used as the solute, and the aqueous solution of food-grade vitamin C is used as the solvent to dissolve and form a uniform preservative. Chitosan with a number average molecular weight of 10,000 and a number average molecular weight of 50,000 The mass percentages of the chitosan and the chitosan with a number average molecular weight of 150,000 are 0.1%, 0.1%, and 0.05%.

Embodiment 2

[0084] Embodiment 2—edible preservative

[0085] Food-grade vitamin C is mixed with the aqueous solution that is 5% food-grade vitamin C by mass percent; The sugar is mixed evenly, and finally the uniformly mixed chitosan is used as the solute, and the aqueous solution of food-grade vitamin C is used as the solvent to dissolve and form a uniform preservative. Chitosan with a number average molecular weight of 10,000 and a number average molecular weight of 50,000 The mass percentages of chitosan and chitosan with a number average molecular weight of 150,000 are 0.6%, 0.7%, and 0.3%.

Embodiment 3

[0086] Embodiment 3—edible preservative

[0087] Food-grade vitamin C is mixed with the aqueous solution of 4% food-grade vitamin C by mass percentage; The sugar is mixed evenly, and finally the uniformly mixed chitosan is used as the solute, and the aqueous solution of food-grade vitamin C is used as the solvent to dissolve and form a uniform preservative. Chitosan with a number average molecular weight of 10,000 and a number average molecular weight of 50,000 The mass percentages of the chitosan and the chitosan with a number average molecular weight of 150,000 are 0.3%, 0.6%, and 0.25%.

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Abstract

The invention discloses an edible fresh keeping agent as well as a preparation method and application thereof. The fresh keeping agent is an aqueous solution of chitosan and food grade vitamin C, wherein the chitosan is edible grade chitosan and consists of chitosan of which the number average molecular weight is 10 thousand, chitosan of which the number average molecular weight is 50 thousand, and chitosan of which the number average molecular weight is 150 thousand; the vitamin C and the chitosan are dissolved in the water to form the solution. According to the edible fresh keeping agent, macromolecular compound chitosan having dual characteristics of bacteriostasis and restraining respiration is used as a core fresh keeping component, and various kinds of the chitosan of different molecular weights are compounded to make the edible fresh keeping agent which is really environmental-friendly, is easy to clean and free from residues.

Description

technical field [0001] The invention relates to a fresh-keeping agent, more specifically, to a special edible fresh-keeping agent for grapes. Background technique [0002] Grapes are berry fruits, one of the four major fruits in my country, and more than 70% are used for fresh food. Grape juice is delicious, high in sugar, rich in vitamins, minerals and other nutrients, as well as substances with pharmacological activity, and rich in nutrition. In addition, grape seeds are also rich in polyphenol nutrients, and its anti-aging ability is 50 times that of vitamin E and 25 times that of vitamin C. It has high economic and therapeutic value, so grapes are called "crystal pearls". , grape juice is called "vegetable milk". [0003] Grapes occupy an important position in the production of fruit trees in our country, among which Kyoho grapes are medium ripening, tetraploid varieties, European and American hybrids, and are native to Japan. Introduced to China in 1959, it has been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/154
CPCA23B7/154
Inventor 高凤菊
Owner TANGSHAN NORMAL UNIV