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Method of using calixarene derivatives as clad material to prepare 1-MCP inclusion complex

A technology of coating materials and inclusions, which is applied in the field of preservation of climacteric fruits, can solve the problems of high price of α-CD, difficulty in controlling the release rate of 1-MCP, and restrictions on commercial application, and achieves a simple preparation process, The effect of low cost of preparation raw materials and lower commercialization barriers

Inactive Publication Date: 2017-12-29
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high price of α-CD and the release of 1-MCP from 1-MCP / α-CD coated products in water, the release rate of 1-MCP is not easy to control, which limits its commercial application

Method used

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  • Method of using calixarene derivatives as clad material to prepare 1-MCP inclusion complex
  • Method of using calixarene derivatives as clad material to prepare 1-MCP inclusion complex
  • Method of using calixarene derivatives as clad material to prepare 1-MCP inclusion complex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Dissolve 0.5 g of p-sulfonic calix[4]arene hydrate in 20 ml of heptane, seal the reaction bottle and evacuate to 0.2 kPa. 10000ppm of 1-MCP gas was introduced into the system under stirring, and the reaction was continued under stirring at 20°C for 6 hours, then 40ml of absolute ethanol was added to precipitate a white solid substance, filtered and then dried naturally to obtain the product.

Embodiment 2

[0031] Dissolve 0.5 g of p-sulfonic calix[6]arene hydrate in 20 ml of cyclopropane, seal the reaction bottle and evacuate to 0.2 kPa. 10,000ppm of 1-MCP gas was introduced into the system under stirring, and the reaction was continued under stirring at 20°C for 6 hours, then 40ml of ethyl acetate was added to precipitate a white solid, which was filtered and dried naturally to obtain the product.

Embodiment 3

[0033] Dissolve 0.5 g of p-sulfonic calix[8]arene hydrate in 20 ml of heptane, seal the reaction bottle, seal the reaction bottle and evacuate to 0.2 kPa. 10000ppm of 1-MCP gas was introduced into the system under stirring, and the reaction was stirred at 25°C for 5 hours, and then 40ml of isopropanol was added to precipitate a white solid substance, which was filtered and dried naturally to obtain the product.

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Abstract

The invention relates to the coating technology of 1-MCP, and aims to provide a method for preparing 1-MCP inclusions by using calixarene derivatives as coating materials. Including: dissolving p-sulfonic acid calixarene hydrate in heptane or cyclopropane, feeding 1-MCP gas under stirring state, and continuously stirring to form a stable 1-MCP / calixarene inclusion complex solution system; injecting Absolute ethanol or ethyl acetate or isopropanol, a white solid substance of 1-MCP / cup aromatics is precipitated; after filtering, dry naturally to obtain 1-MCP inclusion complex. The inclusion complex of the present invention has certain thermal stability, which provides convenience for storage, transportation and safe use of 1-MCP. It is easy to dissolve in water and release gas. By controlling the amount of water added, the dissolution rate of sulfocalixarene can be effectively controlled, so that the purpose of controlled and slow release of inclusions can be achieved. Effectively reduce the cost of 1-MCP coating materials, thereby lowering the commercial barriers for the production of 1-MCP solid inclusions, and providing a guarantee for the large-scale application of 1-MCP in the field of fruit preservation.

Description

technical field [0001] The present invention relates to the cladding technology of 1-methylcyclopropene gas (1-MCP), particularly relate to the method for preparing 1-MCP / calixarene cladding material with calixarene derivative, this cladding can be used for The fresh-keeping field of respiration type fruit. Background technique [0002] During climacteric fruit growth, ethylene is a key gas that stimulates fruit ripening and senescence. 1-MCP gas is a new type of ethylene receptor inhibitor discovered in recent years. It acts on ethylene receptors irreversibly by preferentially binding to ethylene receptors on the epidermis of respiratory climacteric fruits, preventing endogenous ethylene from exogenous The combination of source ethylene and ethylene receptors can inhibit a series of physiological and biochemical reactions induced by it, such as post-ripening or senescence of respiratory climacteric fruits, and achieve the purpose of prolonging the shelf life of fruits. Be...

Claims

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Application Information

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IPC IPC(8): A23B7/152
CPCA23B7/152
Inventor 张俊华倪永浩谢文兴郭大亮唐艳军
Owner ZHEJIANG SCI-TECH UNIV
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