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美国一家公司采用新型聚合物为材料,制成了一种带有微小气孔的塑料薄膜。用这种薄膜包装水果和蔬菜,能控制包装袋内氧气与二氧化碳的交换,使包装中保持一种能放慢水果和蔬菜呼级的最佳气氛,从而有效地延长保鲜
A company in the United States used a new polymer material to make a plastic film with tiny pores. Packaging of fruits and vegetables with this film can control the exchange of oxygen and carbon dioxide in the package so that the package retains the best atmosphere for slowing down the processing of fruits and vegetables,