保鮮膜在生產過(guo)程中普遍(bian)添加了(le)塑(su)化劑(ji),保鮮膜對(dui)人體健(jian)康(kang)的影響也(ye)受到了(le)人們的關注。
市場上(shang)的保(bao)(bao)鮮(xian)(xian)膜(mo)大(da)體分為兩類,一(yi)類是(shi)普通(tong)保(bao)(bao)鮮(xian)(xian)膜(mo),適用(yong)于(yu)冰(bing)箱(xiang)保(bao)(bao)鮮(xian)(xian);一(yi)類是(shi)微波爐保(bao)(bao)鮮(xian)(xian)膜(mo),既可用(yong)于(yu)冰(bing)箱(xiang)保(bao)(bao)鮮(xian)(xian),也可用(yong)于(yu)微波爐。后一(yi)種保(bao)(bao)鮮(xian)(xian)膜(mo)在耐(nai)熱、無(wu)毒性等方面遠(yuan)遠(yuan)優于(yu)普通(tong)保(bao)(bao)鮮(xian)(xian)膜(mo)。因此,消費者在使用(yong)選擇上(shang)要特(te)別注意,分項(xiang)使用(yong)。
購(gou)買保(bao)(bao)鮮(xian)膜(mo)時,首先建(jian)議(yi)(yi)購(gou)買聚(ju)乙烯(xi)(PE)材(cai)質(zhi)(zhi)制成(cheng)的(de)自粘保(bao)(bao)鮮(xian)膜(mo),尤其是在為(wei)(wei)肉食、水果等(deng)進行保(bao)(bao)鮮(xian)時,因(yin)為(wei)(wei)從安全性上來(lai)講,PE材(cai)質(zhi)(zhi)的(de)保(bao)(bao)鮮(xian)膜(mo)是最安全的(de)。如(ru)果希望保(bao)(bao)鮮(xian)期較長,建(jian)議(yi)(yi)選(xuan)擇聚(ju)偏二氯乙烯(xi)(PVDC),因(yin)為(wei)(wei)這(zhe)種材(cai)質(zhi)(zhi)的(de)保(bao)(bao)鮮(xian)膜(mo)保(bao)(bao)濕性能比較好,在三種材(cai)質(zhi)(zhi)的(de)保(bao)(bao)鮮(xian)膜(mo)中保(bao)(bao)鮮(xian)期最長。聚(ju)氯乙烯(xi)(PVC)材(cai)質(zhi)(zhi)的(de)保(bao)(bao)鮮(xian)膜(mo)由于透明(ming)度好、粘度好、彈性好,價格較為(wei)(wei)便宜,所以也(ye)成(cheng)為(wei)(wei)很(hen)多人(ren)的(de)選(xuan)擇,但一定要注意不能用來(lai)做油脂食品的(de)保(bao)(bao)鮮(xian)