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A kind of loquat coating preservative and preparation method thereof

The technology of a coating preservative and loquat is applied in the field of loquat coating preservative and its preparation, which can solve the problems of loquat coating preservative with single components and poor fresh-keeping effect, achieve good fresh-keeping effect, prolong the fresh-keeping period, and produce Good film performance

Inactive Publication Date: 2017-01-11
ZHENGZHOU UNIV +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems of single component and poor fresh-keeping effect of loquat-coated preservatives in the prior art, and provides a loquat-coated preservative with scientific and reasonable formula, natural non-toxicity, high efficiency and good fresh-keeping effect

Method used

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  • A kind of loquat coating preservative and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of pseudophysalis gum

[0024] Soak the dried pseudophysalis seeds after removal of impurities in water 12 times the mass of dry pseudophysalis seeds for 2 hours, heat and stir at 60°C for 2 hours, filter the extract with 3 layers of gauze, and wrap the filter with gauze Repeatedly kneading and extruding for 5 minutes, then extract once again according to the above conditions, combine the filtrates, concentrate in vacuo at 60°C to 1mL of a concentrated solution containing 1.5g of solid matter, add ethanol for alcohol precipitation after cooling, collect the precipitate, dry it in vacuum at 60°C, and pulverize , that is, pseudophysalis gum, ready to use.

[0025] (2) Preparation of clove extract

[0026] Cloves were crushed and 5 times the amount of water was added, ultrasonically extracted for 1 hour, and the extract was obtained by filtration, and the extraction was repeated twice to combine the extracts to obtain the clove extract, which was ready for...

Embodiment 2

[0032] (1) Preparation of pseudophysalis gum

[0033] Soak the dried pseudophysalis seeds after removal of impurities in water 10 times the mass of dry pseudophysalis seeds for 1 hour, heat and stir at 50°C for 1 hour, filter the extract with 3 layers of gauze, and wrap the filter with gauze Repeatedly kneading and extruding for 3 minutes, then extract once again according to the above conditions, combine the filtrates, concentrate in vacuo at 55°C to 1mL of a concentrated solution containing 1g of solid matter, add ethanol for alcohol precipitation after cooling, collect the precipitate, dry it in vacuum at 55°C, and crush it. That is, the pseudophysalis gum is obtained and is set aside.

[0034] (2) Preparation of clove extract

[0035] After the cloves were crushed, 3 times the amount of water was added, ultrasonically extracted for 0.5 h, the extract was obtained by filtration, and the extraction was repeated twice to combine the extracts to obtain the clove extract, whic...

Embodiment 3

[0041] (1) Preparation of pseudophysalis gum

[0042] Soak the dried pseudophysalis seeds after removal of impurities in water 11 times the mass of dry pseudophysalis seeds for 1.2 hours, heat and stir at 56°C for 1.5 hours, filter the extract with 3 layers of gauze, and filter the filtered product with gauze After wrapping, knead and squeeze repeatedly for 4 minutes, then extract once according to the above conditions, combine the filtrates, concentrate in vacuo at 56°C to 1mL of a concentrated solution containing 1.2g of solids, add ethanol after cooling, and collect the precipitate and dry it in vacuum at 58°C , pulverized, that is, pseudophysalis gum, stand-by.

[0043] (2) Preparation of clove extract

[0044] Cloves were crushed and 4 times the amount of water was added, ultrasonically extracted for 0.7 h, the extract was filtered, and the extraction was repeated twice to combine the extracts to obtain the clove extract, which was ready for use.

[0045] (3) Mixing

[0...

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Abstract

The invention discloses a loquat film-coating preservative. The loquat film-coating preservative consists of the following components in percentage by mass: 1 to 3 percent of vitamin C, 1 to 3 percent of erythritol, 1 to 3 percent of Nicandra physaloides chicle, 0.3 to 0.5 percent of nano-silicon dioxide, 0.5 to 1 percent of lecithin, 0.05 to 0.1 percent of phytic acid, 0.05 to 0.1 percent of sucrose ester, 0.2 to 0.4 percent of sodium chloride, 0.5 to 1 percent of glycerol and 0.3 to 0.5 percent of hexametaphosphate and the balance of a clove extract. The loquat film-coating preservative disclosed by the invention is scientific and reasonable in formula, natural, non-toxic and high in efficiency; various components cooperate with each other to achieve a plurality of functions of inhibiting bacteria, retaining water, protecting color and the like; the film forming performance is high and the preservation effect is good; the preservation time of loquats can be greatly prolonged. The invention also discloses a preparation method for the loquat film-coating preservative; the loquat film-coating preservative can be obtained by mixing and matching step by step; the preparation method disclosed by the invention has simple process steps, does not require large equipment, and is high in operability, low in investment, and suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of food fresh-keeping, in particular to a loquat-coated fresh-keeping agent and a preparation method thereof. Background technique [0002] Loquat belongs to Rosaceae and is a famous and precious specialty fruit in southern my country. Loquat fresh fruit is rich in nutrition and sweet in flavor, and is known as green health food. Since loquats are written in the hot and rainy season in early summer, they are very easy to lose water, shrink or rot at room temperature after picking, and lose their use value, and are also vulnerable to mechanical damage and infection by germs. Therefore, under normal conditions, it is difficult to store and transport long distances, resulting in a large concentration of fresh fruits, a sharp drop in fruit prices, and a large number of rotten fruits that have not been sold, thereby causing serious economic losses and restricting the development of loquats. [0003] Commonly us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B7/16
Inventor 张蓓王朝勇王伶俐董召锋董海鹏
Owner ZHENGZHOU UNIV
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