| 摘要 |
Pullulan, a water-soluble polysaccharide produced by Pullularia pullulans from conventional culture media and consisting of repeating units of maltotriose linked by alpha -1,6 bonds, can be shaped by compression molding or extrusion at elevated temperature or by evaporation of water from its aqueous solutions to form shaped bodies, such as films or coatings which are practically impermeable to atmospheric oxygen in thin layers and unaffected by oils and fats so as to provide valuable packing materials for food, pharmaceuticals, and other oxygen sensitive materials. Pullulan is edible and biodegradable. |
