1.新型塑料保鲜膜日本研制成功一种一次性使用的新型塑料保鲜膜。它由两层透水性极好的半透明塑料膜组成,两层之间装有渗透压较高的砂糖糖浆。利用这种塑料膜来包装果蔬,能缓慢地吸收从果蔬表面渗出的水分,从而达到保鲜目的。2.可食用的水果保鲜剂英国制成了一种可食用的水果保鲜剂。它是由蔗糖、淀粉、脂肪酸等调配而成的半透明乳液,可用喷雾、涂刷或浸渍的方法覆盖于柑桔、苹果、西瓜、香蕉和西 1. New plastic wrap Japan successfully developed a one-time use of the new plastic wrap. It is composed of two layers of highly transparent translucent plastic film, with a high osmotic pressure between the two layers of sugar syrup. Use of this plastic film to wrap fruits and vegetables, can slowly absorb the water exuding from the surface of fruits and vegetables, so as to achieve the purpose of preservation. 2. Edible fruit preservative Britain made a edible fruit preservative. It is translucent emulsion prepared from sucrose, starch, fatty acids, etc. It can be sprayed, brushed or impregnated on citrus, apple, watermelon, banana and west