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Cold storage agent and preparation method thereof

A cold storage agent and proportional technology, applied in chemical instruments and methods, preservation of fruits/vegetables through freezing/refrigeration, heat exchange materials, etc., can solve the problems of short cooling time, complicated preparation process, high use cost, etc. Low cost, simple preparation method, and long cooling time

Inactive Publication Date: 2010-02-03
YANTAI MOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing cold storage agents generally have the disadvantages of insufficient cold storage capacity, short cooling time, complicated preparation process and high use cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Proportion: agar 1.5%, sodium hydroxide 0.015%, sodium polyacrylate 0.3%, potassium sorbate 0.1%, water 98.085%.

[0014] The percentages mentioned are all percentages by weight, the same below.

[0015] Preparation process: first add water to the mixer in proportion, then add agar, sodium hydroxide, sodium polyacrylate and potassium sorbate in proportion, heat to 90°C, stir until completely dissolved, mix well, let cool, It becomes jelly and packed in plastic bag or plastic box.

[0016] Put the cold storage agent in the -18°C freezer, and freeze it in about 12 hours. The temperature at the end of the freezing is about -5°C. The cold storage capacity in this process is about 250kJ / kg. Take it out from the cold storage, put it in an environment of 30°C, let it cool down after about ten hours, the form is a liquid gel, and the temperature is about 5°C.

Embodiment 2

[0018] Proportion: agar 1%, sodium hydroxide 0.02%, sodium polyacrylate 0.1%, potassium sorbate 0.2%, water 98.68%.

[0019] Preparation process: first add water to the mixer in proportion, then add agar, sodium hydroxide, sodium polyacrylate and potassium sorbate in proportion, heat to 100°C, stir until completely dissolved, mix well, let cool, It becomes jelly and packed in plastic bag or plastic box.

[0020] Put the cold storage agent in the -18°C freezer, and freeze it in about 12 hours. The temperature at the end of the freezing is about -4°C. The cold storage capacity in this process is about 240kJ / kg. Take it out from the cold storage, put it in an environment of 30°C, let it cool down after about ten hours, the form is a liquid gel, and the temperature is about 5.5°C.

Embodiment 3

[0022] Proportion: agar 2%, sodium hydroxide 0.02%, sodium polyacrylate 0.5%, potassium sorbate 0.05%, water 97.43%.

[0023] Preparation process: first add water to the mixer in proportion, then add agar, sodium hydroxide, sodium polyacrylate and potassium sorbate in proportion, heat to 80°C, stir until completely dissolved, mix well, let cool, It becomes jelly and packed in plastic bag or plastic box.

[0024] Put the cold storage agent in the -18°C freezer, and freeze it in about 12 hours. The temperature at the end of the freezing is about -6°C. The cold storage capacity in this process is about 262kJ / kg. Take it out from the cold storage, put it in an environment of 30°C, let it cool down after about ten hours, the form is a liquid gel, and the temperature is about 4.5°C.

[0025] When in use, put it in the refrigerator or cold place for freezing and cold storage in advance, and then put it next to the items that need to be cooled. When transporting vegetables, they can ...

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PUM

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Abstract

The invention provides a cold storage agent and a preparation method thereof. The cold storage agent comprises the following components: 1-2 percent of agar, 0.01-0.02 percent of sodium hydroxide, 0.1-0.5 percent of sodium polyacrylate, 0.05-0.20 percent of potassium sorbate, and the balance of water. The preparation method comprises the following steps: adding water into a mixer according to theproportion firstly; then adding the agar, the sodium hydroxide, the sodium polyacrylate and the potassium sorbate according to the proportion; heating to 80-100 DEG C, mixing to total dissolution, andcarrying out cold release to form a jelly type after uniformly mixing; and packaging by using a plastic bag or a plastic box. The invention has larger cold storage capacity, longer cold release time,simple preparation method, lower cost as well as high safety and reliability and can be repeatedly used.

Description

(1) Technical field [0001] The invention relates to a cold storage agent, which can be used for cooling and fresh-keeping of medium and short-distance vegetables and fruits, and can also be used for cooling, heat preservation and cold compress for medical care and the like required in daily life. The invention also relates to a preparation method of the cold storage agent. (two), background technology [0002] Non-refrigerated vehicles or insulated vehicles are often used for medium and short-distance transportation of vegetables and fruits. If there are no necessary fresh-keeping measures, vegetables and fruits will generate a lot of heat during transportation, which will cause large losses, especially for some vegetables that have certain temperature requirements. , the loss is greater. [0003] Therefore, it is necessary to use cold storage agent to cool down and keep fresh vegetables and fruits during transportation. The existing cold storage agents generally have the ...

Claims

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Application Information

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IPC IPC(8): C09K5/06A23B7/04
CPCY02E60/147Y02E60/14
Inventor 于志强杜英芬罗琼香王宝国王栋桑宪辉
Owner YANTAI MOON
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