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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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  • Summary
  • 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 cyclopropene compound 1-MCP preservative, and applies it to cyclopropene which is convenient for storage, transportation and use. In fresh-keeping paper, good fresh-keeping effect is achieved

Method used

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  • Preparation method of cyclopropene preservative paper

Examples

Experimental program
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Effect test

Embodiment 1

[0014] The use and storage of the cyclopropylene fresh-keeping paper of the present invention all need to be carried out at a relatively low temperature, and the maximum must not exceed room temperature. According to the above-mentioned technical scheme, cyclopropylene fresh-keeping paper is made according to different proportions, and it is applied to post-harvest storage experiments of bananas and tomatoes. It is a breathable and moisture-permeable film made of polyester, polypropylene, polyethylene, polyvinyl chloride or their mixtures. There are 8 to 48 filling grids on the breathable and moisture-permeable film. Each filling grid It is wrapped with a mixture of 1-MCP inclusion complex powder, water absorbent, dispersant, and slow release agent.

[0015] The present invention comprises the following steps:

[0016] 1. Preparation of 1-MCP inclusion complex: refer to Williard's method (Williard, P. G.; Salvino, J. M.1993. Synthesis, Isolation, and Structure of an LDA-THF C...

Embodiment 2

[0024] Compared with Example 1, the difference of this example is that the composition of the fresh-keeping paper is different, and its composition and mass ratio are as follows: inclusion (main component 1-MCP) / water absorbing agent (anhydrous calcium chloride) / dispersant (stearamide) / sustained release agent (quaternary ammonium salt)=2:5:5:3. According to the experiment, when the room temperature is 20°C, the treatment of banana fruit can 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.

Embodiment 3

[0026] Compared with Example 1, the difference of this example is that the components of fresh-keeping paper are different, and the components and mass ratios are as follows: inclusion (main component 1-MCP) / water absorbing agent (sodium hydroxide) / dispersant (advanced Alcohol) / sustained-release agent (zinc chloride)=2:6:5:7. According to the experiment, when the room temperature is 20°C, the treatment of tomato fruit can significantly inhibit the respiratory peak and ethylene release, and the blank group releases in 3 days Ethylene, 1-MCP treatment group after 5 days.

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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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