保鮮膜在生產過程中普(pu)遍添加(jia)了(le)塑化(hua)劑(ji),保鮮膜對人體(ti)健康的影響也受(shou)到了(le)人們的關注(zhu)。
市場上的保鮮膜(mo)大體分為兩(liang)類,一類是普通(tong)保鮮膜(mo),適用(yong)于冰(bing)箱保鮮;一類是微波爐(lu)(lu)保鮮膜(mo),既可用(yong)于冰(bing)箱保鮮,也可用(yong)于微波爐(lu)(lu)。后一種保鮮膜(mo)在耐熱、無(wu)毒性等方面遠(yuan)遠(yuan)優(you)于普通(tong)保鮮膜(mo)。因此,消費者在使用(yong)選擇上要特別注(zhu)意,分項(xiang)使用(yong)。
購(gou)買保(bao)鮮(xian)(xian)(xian)(xian)膜時,首先建議購(gou)買聚(ju)乙烯(PE)材質制成的自粘保(bao)鮮(xian)(xian)(xian)(xian)膜,尤其是(shi)在(zai)為肉食、水果(guo)等進行保(bao)鮮(xian)(xian)(xian)(xian)時,因為從安(an)全性(xing)(xing)上來講,PE材質的保(bao)鮮(xian)(xian)(xian)(xian)膜是(shi)最安(an)全的。如果(guo)希望保(bao)鮮(xian)(xian)(xian)(xian)期較(jiao)長(chang),建議選擇聚(ju)偏二氯(lv)乙烯(PVDC),因為這(zhe)種材質的保(bao)鮮(xian)(xian)(xian)(xian)膜保(bao)濕性(xing)(xing)能比較(jiao)好(hao)(hao),在(zai)三種材質的保(bao)鮮(xian)(xian)(xian)(xian)膜中保(bao)鮮(xian)(xian)(xian)(xian)期最長(chang)。聚(ju)氯(lv)乙烯(PVC)材質的保(bao)鮮(xian)(xian)(xian)(xian)膜由于透明度好(hao)(hao)、粘度好(hao)(hao)、彈性(xing)(xing)好(hao)(hao),價格較(jiao)為便宜,所以(yi)也成為很多人(ren)的選擇,但一定要注意不(bu)能用(yong)來做油脂食品的保(bao)鮮(xian)(xian)(xian)(xian)