Ethylene gas embedding material with slow release performance and embedding method

Abstract

The invention discloses an ethylene gas embedding material with slow release performance and an embedding method. The embedding method comprises the steps: putting cucurbituril into a high-pressure reaction kettle, wherein the adding amount of the cucurbituril is 10% to 40% of the volume of the reaction kettle; vacuumizing the reaction kettle; introducing ethylene gas, wherein pressure intensity is controlled as 0.1 to 2.0Mpa; reacting for 8 to 48h under 15 to 35 DEG C; opening an air outlet valve of the reaction kettle after reaction finishes and absorbing unabsorbed ethylene to obtain an ethylene embedding product with the slow release performance. Tests show that the content of ethylene in the obtained product can reach 9.3% (w / w) or more, and the ethylene can be continuously released for 720h under 25 DEG C. To an ethylene adsorption technology, the method has the advantages of simpleness, high efficiency and low cost; composite can exist stably; the product has a wide applicationprospect in the field of controlled-atmosphere refreshment of fruits and vegetables.

Description

technical field [0001] The invention relates to an embedding method of ethylene gas with slow-release performance, in particular to an embedding object and embedding method of ethylene gas with slow-release performance. Background technique [0002] Ethylene is an important non-polar gas that regulates plant ripening. It is known as "phytohormone" and can accelerate the ripening process of fruits or promote the germination of seeds. In the field of fruit and vegetable preservation, ethylene glycol is widely used to induce plants or fruits to release ethylene, but it has certain toxicity, and its safety has attracted much attention. [0003] Gases are usually stored and transported in high-pressure steel cylinders, but there are risks of leakage and explosion during use. Adsorbing the gas in a solid carrier can effectively avoid this defect. Gases physically trapped in a solid carrier have characteristics such as slow release, and have important applications when the demand...

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Problems solved by technology

However, the combination of ethylene and starch is too weak to cause the complex to be unstable, even if the decomposition rate is fast at dry room temperature, resulting in poor storage stability (Shi L.F., Fu X., Tan C.P., Huang Q.*, Zhang B. *Encapsulation of Ethylene Gas into Granular Cold-Water Soluble Starch: Structure and Release Kinetics. Journal of Agricultural and Food Chemistry, 2017, 65: 2189-2197)

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