Preparation method of cyclopropene preservative paper

A technology of fresh-keeping paper and cyclopropylene, which is applied in the field of preparation of cyclopropylene fresh-keeping paper, can solve the problems of poor stability, difficult operation, and inconvenient use, and achieve the effects of simple use, accelerated speed, and extended release period

Inactive Publication Date: 2013-03-13
新疆农业科学院农产品贮藏加工研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects of inconvenient use, poor stability and difficult operation of current cyclopropene preservatives, the present invention provides a preparation method of cycl

Method used

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  • Preparation method of cyclopropene preservative paper

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Experimental program
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Example Embodiment

[0013] Example 1:

[0014] The cyclopropylene fresh-keeping paper of the present invention needs to be used and stored at a relatively low temperature, and the maximum temperature shall not exceed room temperature. According to the above-mentioned technical scheme, cyclopropene fresh-keeping paper is made according to different proportions, which is used in postharvest storage experiments of bananas and tomatoes. It is a breathable and moisture-permeable film made of polyester, polypropylene, polyethylene, polyvinyl chloride or their mixture. There are 8 to 48 filling grids on the air-permeable and moisture-permeable film, each of which is filled There is a mixture of 1-MCP inclusion powder, water-absorbing agent, dispersant, and slow-release agent.

[0015] The present invention includes the following steps:

[0016] 1. Preparation of 1-MCP inclusion compound: refer to Williard's method (Williard, PG; Salvino, JM1993. Synthesis, Isolation, and Structure of an LDA-THF Complex. Jour...

Example Embodiment

[0023] Example 2:

[0024] Compared with Example 1, the difference of this example lies in the composition of the cling paper. The composition and quality are as follows: inclusion (main ingredient 1-MCP) / water absorbing agent (anhydrous calcium chloride) / dispersant (Stearamide) / sustained release agent (quaternary ammonium salt)=2:5:5:3. According to experiments, when the room temperature is 20℃, the banana fruit can be treated to significantly inhibit the respiratory peak and ethylene release, and delay the appearance of the respiratory peak. The blank group is 7 days and the 1-MCP treatment group is 13 days.

Example Embodiment

[0025] Example 3:

[0026] Compared with Example 1, the difference of this example lies in the composition of the cling paper. The composition and quality are as follows: inclusion (main ingredient 1-MCP) / water absorbing agent (sodium hydroxide) / dispersant (high-grade Alcohol) / sustained release agent (zinc chloride)=2:6:5:7. After experiments, when the room temperature is 20℃, the tomato fruits can be treated, which can significantly inhibit the peak respiratory and ethylene release. The blank group releases in 3 days Ethylene, 1-MCP treatment group is 5 days later.

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Abstract

The invention relates to a preparation method of a cyclopropene preservative paper. The method comprises the steps of: 1. preparation of a 1-MCP (1-methylcyclopropene) inclusion complex: adding metallic lithium and anhydrous tetrahydrofuran into a three-necked bottle equipped with a condensing tube and a dropping funnel, adding diisopropylamine slowly in a dropwise manner till complete disappearance of metallic lithium, thus obtaining the reaction product lithium diisopropylamide; and then, adding 3-chloro-2-methylpropene slowly in a dropwise manner, introducing the reaction-produced gas into an alpha/beta-cyclodextrin absorption liquid, then performing centrifugation and drying, thus obtaining the 1-MCP inclusion complex; 2. mixture preparation: weighing the 1-MCP inclusion complex obtained in step 1, then weighing a water absorbent, a dispersing agent, and a sustained-release agent, and conducting mixing; and 3. filling sealing: loading the mixture obtained in step 2 into a film with breathability and moisture permeability uniformly, and performing heat sealing to obtain the cyclopropene preservative paper. The cyclopropene preservative paper provided in the invention is simpler and more convenient to use, and is easy for large-scale popularization and application; the water absorbent can rapidly absorb moisture in the air so as to accelerate the 1-MCP gas release rate of the inclusion complex; and the sustained-release agent can extend the release period of 1-MCP so as to achieve a more excellent preservation effect.

Description

technical field [0001] The invention relates to the technical field of fresh-keeping of fruits and vegetables, in particular to a preparation method of cyclopropylene fresh-keeping paper. Background technique [0002] In recent years, researchers have discovered a series of very effective ethylene receptor inhibitors cyclopropene compounds, such as cyclopropene, 1-methylcyclopropene, 3-methylcyclopropene, 3,3-dimethylcyclopropene, etc. . This kind of cyclopropene compound can irreversibly act on ethylene receptors by preferentially binding to ethylene receptors, preventing the binding of endogenous ethylene and exogenous ethylene to ethylene receptors, thereby inhibiting the ethylene receptors induced by it. A series of physiological and biochemical reactions of horticultural crops after ripening or senescence. Among these cyclopropene compounds, 1-MCP (1-methylcyclopropene) has the most outstanding effect. It is safe, non-toxic, low in use cost, less in use, no residue, c...

Claims

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Application Information

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IPC IPC(8): C08J7/00C08L67/00C08L23/12C08L23/06C08L27/06A23B7/154
Inventor 吴斌张玉丽吴忠红郭芹车凤斌张平
Owner 新疆农业科学院农产品贮藏加工研究所
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