With plastic pollution becoming a global crisis, more people are turning to eco-friendly alternatives. One option gaining attention is the biodegradable corn starch bag — a sustainable replacement for traditional plastic bags.
But what exactly are these bags? And can they truly help reduce environmental harm?
In this article, we explain what corn starch bags are made of, how they work, and why businesses are choosing them over plastic.

What Are Corn Starch Biodegradable Bags?
Corn Starch Biodegradable Bags are eco-friendly bags made primarily from corn starch, a renewable resource, and processed into polylactic acid (PLA), a biodegradable polymer.
What Are Corn Starch Bags Made Of? What is the source of the material?
Biodegradable corn starch bags are typically made from:
- Corn starch – A renewable material derived from corn plants
- PBAT – A biodegradable polymer that improves flexibility
- PLA (optional) – A plant-based bioplastic made from fermented corn
This blend allows the bags to function like plastic, while being non-toxic and compostable.

Corn Starch Biodegradable Bags Vs Traditional Plastic Bags
Feature | Biodegradable Corn Starch Bags | Traditional Plastic Bags |
---|---|---|
Decomposition Time | 90–180 days (in industrial composting) | 100–1000 years |
Environmental Impact | No microplastics, fully compostable | Generates microplastics, pollutes soil and water |
Raw Material | Renewable corn starch | Petroleum-based plastic |