PLA is a biodegradable plastic made from natural resources, such as corn or other vegetables that contain a large amount of starch (long chains of sugar glucose). In corn (the most widely used crop in the creation of PLA), the kernels are processed and the endosperm is removed, ground into corn starch, fermented to create lactic acid, and the lactic acid is polymerized (chains linked to create a polymer) into polylactic acid (also known as polylactide).
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