保鮮膜在生產過程中(zhong)普遍添加了(le)塑(su)化劑,保鮮膜對(dui)人體(ti)健康的影響也受到了(le)人們的關注(zhu)。
市場上的保鮮(xian)(xian)膜大(da)體分為(wei)兩類(lei),一(yi)類(lei)是普(pu)通保鮮(xian)(xian)膜,適用(yong)(yong)于冰箱(xiang)保鮮(xian)(xian);一(yi)類(lei)是微(wei)波爐保鮮(xian)(xian)膜,既(ji)可用(yong)(yong)于冰箱(xiang)保鮮(xian)(xian),也可用(yong)(yong)于微(wei)波爐。后一(yi)種保鮮(xian)(xian)膜在耐(nai)熱、無毒性等(deng)方面遠遠優于普(pu)通保鮮(xian)(xian)膜。因此,消費者在使用(yong)(yong)選擇上要特別(bie)注意,分項(xiang)使用(yong)(yong)。
購買保(bao)(bao)鮮(xian)(xian)膜(mo)(mo)時(shi),首先建議購買聚乙(yi)(yi)烯(xi)(PE)材(cai)質制成的(de)(de)(de)自粘保(bao)(bao)鮮(xian)(xian)膜(mo)(mo),尤其(qi)是(shi)在為肉(rou)食、水果等(deng)進行保(bao)(bao)鮮(xian)(xian)時(shi),因為從安全性(xing)(xing)上(shang)來講(jiang),PE材(cai)質的(de)(de)(de)保(bao)(bao)鮮(xian)(xian)膜(mo)(mo)是(shi)最安全的(de)(de)(de)。如果希望保(bao)(bao)鮮(xian)(xian)期較長,建議選(xuan)擇聚偏二氯(lv)乙(yi)(yi)烯(xi)(PVDC),因為這種(zhong)(zhong)材(cai)質的(de)(de)(de)保(bao)(bao)鮮(xian)(xian)膜(mo)(mo)保(bao)(bao)濕(shi)性(xing)(xing)能比(bi)較好(hao),在三(san)種(zhong)(zhong)材(cai)質的(de)(de)(de)保(bao)(bao)鮮(xian)(xian)膜(mo)(mo)中保(bao)(bao)鮮(xian)(xian)期最長。聚氯(lv)乙(yi)(yi)烯(xi)(PVC)材(cai)質的(de)(de)(de)保(bao)(bao)鮮(xian)(xian)膜(mo)(mo)由于透明度(du)好(hao)、粘度(du)好(hao)、彈性(xing)(xing)好(hao),價格較為便宜,所以也成為很(hen)多人的(de)(de)(de)選(xuan)擇,但一定(ding)要注意不能用來做(zuo)油脂食品的(de)(de)(de)保(bao)(bao)鮮(xian)(xian)