starch-based materials have been widely studied and developed for commercial production, primarily from corn and tapioca. In order to reduce our dependence on nonrenewable plastics and solve the problem of nonbiodegradable plastic waste, there has been much attention paid to the development of biodegradable plastics from natural resources. However, the use of these starches could generate food security problems. Therefore, the use of alternative starch sources, such as agricultural waste, would be of great interest. In this work, we investigated the properties of films prepared from pineapple stem , which has a high amylose content.