Foodstuff activity preserving package and use thereof

Abstract

The invention relates to an active preservation package of grain, comprising preservative film bag, gas modifier, and grain products. The film bag is polyethylene (PE) or polyvinyl chloride (PVC), the most suitable ventilation ratio Rho0 (CO2:O2) of carbon dioxide to oxygen is 1.3-7.0; main ingredients in small bag of gas modifier are malic acid, sodium bicarbonate, silica gel, calcium stearate, starch, and so on; the concentration of oxygen is controlled below 2%, while the carbon oxygen is controlled in the range of 50%-80%. Using the invention, the rice can be preserved in the active preservation bag for 9 months at normal temperature, without insects and mildew. The quality indexes of fatty acid, total acid, reducing sugar, viscosity, etc. are obvious better than the contrast (general preservation). The taste can be kept as the flavor of fresh rice with total loss smaller than 1%.

Description

technical field [0001] The invention belongs to the technical field of storage and fresh-keeping of agricultural products in agricultural engineering, and in particular relates to an active fresh-keeping package for grain and its application. Background technique [0002] my country's centralized grain storage is mainly to store raw grain. Most of the anti-mildew and anti-insect fresh-keeping methods of "ventilation and drying + aluminum phosphide" fumigation are used, but the problems of chemical residues and insect resistance are becoming more and more serious. Refined rice is still kept fresh in collective warehouses, stored in bags or tanks at home, and stored in ordinary woven bags or plastic bags in circulation and sales. [0003] In developed countries, based on the advanced machinery, electronics, and computer industry foundations and the support of cheap energy and high consumption, rice preservation mainly adopts the standard controlled atmosphere (CA) method of "...

AI Technical Summary

Problems solved by technology

[0005] However, air-filled or vacuum packaging has two disadvantages: one is the high cost of the packaging bag, it is not easy to degrade in the environment, the equipment cost is high and the operation is complicated, and it is difficult to be widely used in my country's current agricultural production system; the other is the lack of corresponding supporting fresh-keeping Packaging film and application technology research