保鮮膜在生產過(guo)程(cheng)中普遍添(tian)加(jia)了(le)塑化劑,保鮮膜對人體健康的影(ying)響也受到(dao)了(le)人們的關注。
市場上(shang)的(de)保(bao)鮮(xian)膜(mo)大體分為兩類(lei),一(yi)(yi)類(lei)是普通(tong)(tong)保(bao)鮮(xian)膜(mo),適用(yong)于(yu)(yu)冰箱保(bao)鮮(xian);一(yi)(yi)類(lei)是微波(bo)爐(lu)保(bao)鮮(xian)膜(mo),既可用(yong)于(yu)(yu)冰箱保(bao)鮮(xian),也可用(yong)于(yu)(yu)微波(bo)爐(lu)。后一(yi)(yi)種保(bao)鮮(xian)膜(mo)在(zai)耐熱、無毒(du)性等方(fang)面遠(yuan)遠(yuan)優于(yu)(yu)普通(tong)(tong)保(bao)鮮(xian)膜(mo)。因(yin)此,消費(fei)者(zhe)在(zai)使(shi)用(yong)選擇上(shang)要特(te)別注意,分項(xiang)使(shi)用(yong)。
購買(mai)保(bao)(bao)鮮(xian)膜時(shi)(shi),首先建議(yi)購買(mai)聚(ju)乙(yi)烯(PE)材(cai)(cai)質制(zhi)成的自粘保(bao)(bao)鮮(xian)膜,尤其是在(zai)為(wei)肉食(shi)、水果等進行(xing)保(bao)(bao)鮮(xian)時(shi)(shi),因(yin)為(wei)從安全性上(shang)來講,PE材(cai)(cai)質的保(bao)(bao)鮮(xian)膜是最安全的。如果希望(wang)保(bao)(bao)鮮(xian)期較(jiao)長,建議(yi)選(xuan)擇(ze)聚(ju)偏二氯(lv)乙(yi)烯(PVDC),因(yin)為(wei)這種(zhong)材(cai)(cai)質的保(bao)(bao)鮮(xian)膜保(bao)(bao)濕性能(neng)比較(jiao)好,在(zai)三(san)種(zhong)材(cai)(cai)質的保(bao)(bao)鮮(xian)膜中(zhong)保(bao)(bao)鮮(xian)期最長。聚(ju)氯(lv)乙(yi)烯(PVC)材(cai)(cai)質的保(bao)(bao)鮮(xian)膜由于透(tou)明(ming)度好、粘度好、彈性好,價格(ge)較(jiao)為(wei)便(bian)宜(yi),所(suo)以也成為(wei)很多人(ren)的選(xuan)擇(ze),但一定要注意不(bu)能(neng)用來做油脂(zhi)食(shi)品的保(bao)(bao)鮮(xian)