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保(bao)鮮(xian)膜(mo)在生(sheng)產過(guo)程中普遍(bian)添加了(le)塑化劑，保(bao)鮮(xian)膜(mo)對人體健康(kang)的(de)影響也受到(dao)了(le)人們(men)的(de)關(guan)注。

市場上(shang)的保鮮(xian)(xian)膜大體分(fen)為兩類，一類是普通保鮮(xian)(xian)膜，適用(yong)于(yu)冰(bing)箱保鮮(xian)(xian)；一類是微波(bo)爐保鮮(xian)(xian)膜，既可用(yong)于(yu)冰(bing)箱保鮮(xian)(xian)，也可用(yong)于(yu)微波(bo)爐。后一種保鮮(xian)(xian)膜在(zai)耐(nai)熱、無毒性等(deng)方(fang)面遠遠優(you)于(yu)普通保鮮(xian)(xian)膜。因(yin)此，消費者在(zai)使(shi)(shi)用(yong)選擇(ze)上(shang)要(yao)特別注意，分(fen)項(xiang)使(shi)(shi)用(yong)。

購(gou)買(mai)(mai)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)時，首先(xian)建議購(gou)買(mai)(mai)聚(ju)乙(yi)烯(xi)（PE）材(cai)質(zhi)(zhi)制成的(de)自粘(zhan)(zhan)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)，尤其(qi)是在為(wei)肉食(shi)(shi)、水果(guo)等進(jin)行保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)(xian)時，因(yin)(yin)為(wei)從安全(quan)性(xing)上來講，PE材(cai)質(zhi)(zhi)的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)是最安全(quan)的(de)。如果(guo)希望保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)(xian)期較(jiao)長，建議選擇(ze)聚(ju)偏二氯(lv)乙(yi)烯(xi)（PVDC），因(yin)(yin)為(wei)這種材(cai)質(zhi)(zhi)的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)保(bao)(bao)(bao)濕性(xing)能(neng)比較(jiao)好，在三(san)種材(cai)質(zhi)(zhi)的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)中(zhong)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)(xian)期最長。聚(ju)氯(lv)乙(yi)烯(xi)（PVC）材(cai)質(zhi)(zhi)的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)(xian)膜(mo)(mo)(mo)由于(yu)透(tou)明(ming)度好、粘(zhan)(zhan)度好、彈性(xing)好，價格(ge)較(jiao)為(wei)便宜，所(suo)以也成為(wei)很多人的(de)選擇(ze)，但一定要注意(yi)不能(neng)用來做油脂(zhi)食(shi)(shi)品的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)(xian)