Preparation method of litchi preservative fresh-keeping agent

A technology of preservative and lychee, which is applied in the field of preparation of lychee antiseptic and antistaling agent, can solve the problems of short preservation antiseptic effect, narrow antibacterial spectrum, large dosage, etc., and achieve the effects of no adverse side effects, good synergy, and simple preparation method

Inactive Publication Date: 2017-03-22
CHANGZHOU C PE PHOTO ELECTRICITY SCI & TECHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention: Aiming at the defects that the existing lychee antiseptic preservatives generally have large dosage, short preservation and antiseptic effect, narrow antibacterial spectrum, and are easy to cause harm to the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Get 1 cod, add it in the fish tank, then add 3L mass fraction of 10% calcium chloride solution, and feed the cod with shrimps for 2 days, take out the cod, collect the liquid in the fish tank, and filter to obtain the filtrate, and then Dissect the cod, take its epidermis and put it in a high-speed tissue masher, grind it at a speed of 4500r / min for 25min to obtain a homogenate, and mix it with the filtrate for 3min to obtain a mixture; weigh 200g of onion, 80g of lemon and 40g of Achillea serrata, washed with water for 3 times, placed in a juicer to extract the juice, collected the mixed juice, and added to the fermentation tank together with the above mixed solution, stirred and mixed for 3 minutes to obtain the fermentation substrate, and then added the fermentation substrate Quality 5% Bacillus megaterium strains, the temperature of the fermenter is controlled to be 35°C, the stirring speed is 120r / min, and the sealed fermentation is carried out for 6 days; when the ...

example 2

[0019]Get 2 cods, add them in the fish tank, add 4L mass fraction of 10% calcium chloride solution, and feed the cods with shrimps for 3 days, take out the cods, collect the liquid in the fish tank, and filter to obtain the filtrate. Dissect the cod, take its epidermis and place it in a high-speed tissue masher, grind it at a speed of 5500r / min for 30 minutes to obtain a homogenate, and mix it with the filtrate for 5 minutes to obtain a mixture; weigh 300g of onion, 100g of lemon and 50g of lemon in sequence Achillea serrata, washed with water for 5 times, placed in a juice extractor to squeeze the juice, collected the mixed juice, and added to the fermentation tank together with the above mixed solution, stirred and mixed for 5 minutes to obtain the fermentation substrate, and then added the fermentation substrate Quality 8% Bacillus megaterium strains, the temperature of the fermenter is controlled to be 40°C, the stirring speed is 150r / min, and the sealed fermentation is car...

example 3

[0022] Get 1.5 cods, add them to the fish tank, add 3.5L mass fraction of 10% calcium chloride solution, and feed the cods with shrimps for 2.5 days, take out the cods, collect the liquid in the fish tank, and filter to obtain the filtrate, then Dissect the cod, take its epidermis and place it in a high-speed tissue masher, grind it at a speed of 5000r / min for 27.5min to obtain a homogenate, and mix it with the filtrate for 4min to obtain a mixture; weigh 250g of onion and 90g of lemon in sequence and 45g of Achillea serrata, washed with water for 4 times respectively, placed in a juice extractor to squeeze the juice, collected the mixed juice, and added it to the fermenter together with the above mixed solution, stirred and mixed for 4min to obtain the fermentation substrate, and then added the fermented Substrate quality 6.5% Bacillus megaterium strain, control fermentor temperature is 37.5 ℃, stirring speed is 135r / min, seal fermentation for 7 days; wait for fermentation to ...

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PUM

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Abstract

The invention discloses a preparation method of a litchi preservative fresh-keeping agent, and belongs to the technical field of fruit preservation and fresh keeping. The method is as follows: first cod is stimulated with high calcium salt for secretion of antibacterial mucus on the surface skin of the cod, the surface skin of the cod and a plant extract liquid are mixed for fermentation, in the fermentation process, bactericidal antibacterial substances in the he surface skin of the cod and a plant are released, and then by enzymolysis of soybean protein by use of glutaminase, proteins are cross-linked. The soybean protein has excellent gas barrier properties and water resistance, and can prevent oxidation and moisture loss of litchis, and finally by mixing with chitosan and the like, the litchi preservative fresh-keeping agent is obtained, the litchi preservative fresh-keeping agent prepared by the method has the advantages of good preservative fresh-keeping effect, long fresh-keeping time, a small dosage, no substances harmful to human body, high efficiency, no toxicity and safety.

Description

technical field [0001] The invention discloses a preparation method of an antiseptic and fresh-keeping agent for litchi, belonging to the technical field of fruit anti-corrosion and fresh-keeping. Background technique [0002] Litchi belongs to Sapindaceae, a famous fruit native to southern my country, and one of the most competitive fruits in the international market. Because litchi fruit is harvested in high temperature season in midsummer, and its special structure, it is very easy to brown and rot after harvest. At present, the main methods of litchi rot control are: (1) preservative treatment. The preservatives used for lychee preservation mainly include carbendazim, thiophanate, teketol, imazalil, Shibaogong, Shibaoke, etc. (2) Sulfur dioxide treatment. It mainly includes fumigation of litchi with sulfur dioxide gas or sulfur dioxide gas produced by burning sulfur, or slow release treatment with sulfur dioxide donors. Sulfur dioxide treatment has a certain effect o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/154
CPCA23B7/154
Inventor 刘华孟浩然李雪晴
Owner CHANGZHOU C PE PHOTO ELECTRICITY SCI & TECHN
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