美国科学家最近利用壳聚糖为主要原料,并添加一定量的纤维素作为发酵用原料,然后加入到发酵液中提取出可降解的“生物塑料”。目前使用中的塑料均为高分子聚合物,它们的主要原料都是石油裂解物,但石油作为一种矿产,资源相对有限。随着可供开发石油的逐渐减少,世界各国都在寻求以其他方法生产塑料的新途径。当前许多临床药品,包括绝大部分抗生素、维生素与氨基酸等,均为微生物发酵后提取的产品。美国科学家利用这一原理,研究出了这 US scientists recently used chitosan as the main raw material, and add a certain amount of cellulose as a raw material for fermentation, and then added to the fermentation broth extracted biodegradable plastic. Currently used plastics are high polymer, their main raw material is petroleum lysate, but oil as a mineral resources are relatively limited. As the amount of oil available for development declines, countries all over the world are seeking new ways to produce plastics by other means. Many current clinical drugs, including most of the antibiotics, vitamins and amino acids, are extracted after the fermentation of microorganisms. US scientists use this principle to study this out