Sustained-release two-component grape fresh-keeping pad

Abstract

The invention relates to a fruit fresh-keeping pad, especially relates to a sustained-release two-component grape fresh-keeping pad used in table grape transport and storage for fresh keeping of table grapes, comprising a motherboard(3) and breathable units arranged on the motherboard(3), wherein the breathable units are distributed on the motherboard (3) and uniformly spaced, each breathable unit comprises three layers, the upper layer is a surface breathable layer (1), the bottom layer is a bottom breathable layer (4), the surface breathable layer (1) and the motherboard (3) form a SO2 release cavity which is filled with a mixture of sulfite and sustained release agent, the bottom breathable layer (1) and the motherboard (3) form a CO2 release cavity which is filled with a mixture of chlorate and sustained release agent, and the weight ratio of sulfite to chlorate to sustained release agent is 8-12:1:1. The sustained-release two-component grape fresh-keeping pad disclosed herein has the following advantages that: 1, because the generation of ClO2 gas requires SO2 consumption, the amount of the residual SO2 can be controlled, so that the accumulation of the SO2 gas and the generated hazard can be eliminated; 2, because of the successively generated SO2 gas and ClO2 gas, the effect of double sterilization can be achieved; and 3, the release concentrations of the two gases purposefully selected by adjusting the proportion of the formulation and the moisture permeability and breathability of the film, thus the applicability of the sustained-release two-component grape fresh-keeping pad disclosed herein is wide, and the sustained-release two-component grape fresh-keeping pad disclosed herein has good usage value and market prospect.

Description

technical field [0001] The invention relates to a fruit fresh-keeping mat, in particular to a slow-release two-component grape fresh-keeping mat used for fresh-keeping of table grapes and applied to transportation and storage of fresh-table grapes. Background technique [0002] At present, SO is widely used at home and abroad 2 As a grape preservative, SO 2 Because of its reducing properties, it can reduce the oxygen content in plant tissues, inhibit the activities of oxidase and microorganisms, prevent food spoilage, discoloration and loss of Vc, so as to achieve the purpose of freshness preservation. But SO 2 It is difficult to control the release amount and release speed, and excessive amount will cause phytotoxicity, resulting in bleaching of fruits and vegetables, excessive residues and other problems; however, the concentration is too low to achieve antibacterial effect, [0003] Fresh-keeping paper is mainly used to keep grapes commercially transported fresh, but ...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to aim at SO 2 and ClO 2 Due to the different antibacterial mechanisms and the limitations of sterilization and the bleaching effect of fruits and vegetables caused by excessive concentration, a method of producing SO by controlling the air permeability of the membrane was proposed. 2 , ClO 2 gas, these two gases complement each other, both can reduce SO 2 Phytotoxicity, and give full play to ClO 2 The slow-release two-component grape fresh-keeping pad with excellent fresh-keeping effect, so as to achieve the best fresh-keeping effect

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