with rela-tive amounts of each component varying according to its plantsource As an example, cornstarch has about 28 wt.% amylose ascompared to cassava starch with 17 wt.%. Film-forming, barrierand mechanical properties, as well as processing conditions, aredependent on amylose to amylopectin ratio. In general, an increas-ing amount of amylose improves the abovementioned properties.