Litchi fresh-keeping agent and preparation method thereof

A preservative and lychee technology, applied in the field of lychee preservative and its preparation, can solve problems such as being difficult for consumers to accept, and achieve the effects of improving color and lustre and reducing delay

Inactive Publication Date: 2016-08-03
广西绿享科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it should be pointed out that these raw materials need to be used in conjunction with other coatings or film-forming raw materials to achieve a good fresh-keeping effect, and these extracts...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 The preparation method of passion fruit peel extract of the present invention

[0039] Take 100g of fresh passion fruit peel, use a wall breaking machine to grind at room temperature, then add 2 times of distilled water, stand for extraction at room temperature for 180min, filter and save the filtrate, continue to add 2 times of distilled water for extraction at room temperature for 60min, after filtering The two filtrates were combined.

[0040] Add 2 times the weight of 50% ethanol to the filter residue, extract at 30°C for 100 minutes, take the filtrate and filter residue respectively after filtration; add 1 times the mass of water to the filter residue, then add Na3CO3 at 40°C to adjust the pH to 7.5, stir for 15 minutes, add concentrated hydrochloric acid to adjust to pH 2, then add absolute ethanol to adjust the alcohol concentration to 50%, stand at 40° C. for 100 min, and filter the precipitate to keep the solid after standing. The water extraction...

Embodiment 2

[0041] Embodiment 2 The preparation method of passion fruit peel extract of the present invention

[0042] Take 100g of fresh passion fruit peel, grind it with a wall breaker at 4°C, then add 3 times of distilled water, stand for extraction at 16°C for 150 minutes, filter and save the filtrate, continue to add 3 times of distilled water to the filter residue and extract for 10 minutes at 16°C, After filtering, save the filtrate, continue to add 3 times of distilled water to the filter residue and let it stand for extraction at 16°C for 15 minutes, then combine the three filtrates, and use the filter residue for later use;

[0043] Add 3 times the weight of 60% ethanol to the filter residue, extract at 40°C for 100 minutes, and take the filtrate and filter residue respectively after filtration; add 3 times the weight of 60% ethanol to the filter residue, extract at 40°C for 30 minutes, combine the two alcohol extraction filtrates after filtration, and filter the residue for use ...

Embodiment 3

[0045] Embodiment 3 The preparation method of passion fruit peel extract of the present invention

[0046] Take 100g of fresh passion fruit peel, use a wall breaker to grind at 4°C, then add 5 times of distilled water, stand at 15°C for extraction for 150 minutes, filter and save the filtrate, continue to add 3 times of distilled water to the filter residue and extract at 15°C for 10 minutes, After filtering, save the filtrate, continue to add 2 times distilled water to the filter residue and let it stand for extraction at 15°C for 15 minutes, then combine the three filtrates, and the filter residue is set aside;

[0047] Add 3 times the weight of 65% ethanol to the filter residue, extract at 45°C for 100 minutes, and filter; add 2 times the weight of 65% ethanol to the filter residue, extract at 45°C for 30 minutes, combine the two alcohol extraction filtrates after filtration, and filter the residue for use;

[0048] Add 2 times the quality of water to the filter residue, th...

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PUM

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Abstract

The purpose of the invention is to provide a litchi fresh-keeping agent used for keeping freshness of fresh litchis, containing no chemical additives, antiseptics or mildew inhibitors and being able to make passion fruits have rich fragrance and keep the bright red color of the litchis. The litchi fresh-keeping agent is composed of 60-80wt% of passion fruit peel extract and 20-40% of litchi pericarp extract. The litchi fresh-keeping agent realizes storage of litchis at a low temperature for 60d or above without using other chemical synthesis components, and avoids browning and unable selling; the color of the fresh litchis is greatly improved, and still approaches fresh litchi color when the fresh litchis are stored for 4 weeks; the fragrance of the litchis is more dense, the fragrance of the litchis just immersed in a fresh-keeping liquid is far rich than that of common fresh litchis, and the fragrance of the litchis stored for 40-60d is basically not different from that of the fresh picked litchis; and the reduction trend of the content of soluble solids in the litchis is greatly delayed, and the content of the soluble solids in the fruit juice of the litchis stored for 60d still reaches 82.4% or above of the content of the soluble solids in the fresh litchis.

Description

technical field [0001] The invention relates to a lychee antistaling agent and a preparation method thereof, in particular to a lychee antistaling agent which is safe, effective, low in cost, can increase the lychee fragrance and maintain the red color of the lychees, and a preparation method thereof. Background technique [0002] Litchi is a subtropical fruit tree native to southern China. [0003] Litchi is native to southern China and is a subtropical fruit tree, an evergreen tree about 10 meters high. Litchi is an important fruit crop in South China, with an annual output of more than one million tons. Eating fresh lychees can promote body fluids, quench thirst, and calm the stomach; lychees are rich in iron and vitamin C. Iron can increase the content of hemoglobin, making people rosy, and vitamin C can make the skin delicate and elastic. However, lychees are mainly produced in southern regions such as Guangxi. If fresh-keeping treatment is not carried out during tran...

Claims

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Application Information

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IPC IPC(8): A23B7/154A23L3/3472
CPCA23B7/154A23L3/3472A23V2002/00A23V2250/21A23V2300/14
Inventor 程昊郝光明黄彩幸
Owner 广西绿享科技有限公司
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