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.