芒果视频下载

保鮮(xian)膜在(zai)生產過(guo)程中普遍添加了塑(su)化(hua)劑，保鮮(xian)膜對人體健康的(de)影響也受到了人們的(de)關注。

市場上的(de)保鮮(xian)膜大體分為兩類(lei)，一類(lei)是(shi)普(pu)通(tong)保鮮(xian)膜，適用于冰箱保鮮(xian)；一類(lei)是(shi)微波爐保鮮(xian)膜，既可(ke)用于冰箱保鮮(xian)，也可(ke)用于微波爐。后一種保鮮(xian)膜在耐熱(re)、無毒性等(deng)方面(mian)遠遠優于普(pu)通(tong)保鮮(xian)膜。因(yin)此(ci)，消費者在使用選擇(ze)上要特別注意，分項使用。

購(gou)買保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)時(shi)，首先(xian)建議(yi)購(gou)買聚乙烯（PE）材(cai)質(zhi)(zhi)制成(cheng)的(de)自粘(zhan)保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)，尤其是在為肉食、水(shui)果(guo)等進行(xing)保(bao)(bao)鮮(xian)(xian)(xian)(xian)時(shi)，因為從安全性(xing)(xing)上來(lai)講，PE材(cai)質(zhi)(zhi)的(de)保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)是最安全的(de)。如果(guo)希望保(bao)(bao)鮮(xian)(xian)(xian)(xian)期較(jiao)長(chang)，建議(yi)選擇聚偏(pian)二(er)氯(lv)乙烯（PVDC），因為這種(zhong)材(cai)質(zhi)(zhi)的(de)保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)保(bao)(bao)濕(shi)性(xing)(xing)能(neng)比較(jiao)好，在三種(zhong)材(cai)質(zhi)(zhi)的(de)保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)中(zhong)保(bao)(bao)鮮(xian)(xian)(xian)(xian)期最長(chang)。聚氯(lv)乙烯（PVC）材(cai)質(zhi)(zhi)的(de)保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)由于透(tou)明度(du)好、粘(zhan)度(du)好、彈性(xing)(xing)好，價格較(jiao)為便宜，所以也(ye)成(cheng)為很(hen)多人的(de)選擇，但一定(ding)要注意不(bu)能(neng)用來(lai)做油脂食品的(de)保(bao)(bao)鮮(xian)(xian)(xian)(xian)