New Biodegradable Fruit Wash Removes Most Pesticides and Extends Freshness
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Researchers have developed a biodegradable fruit wash that removes up to 94% of pesticide residues from apples and can be paired with an edible coating to keep produce fresh for longer. The wash is made from natural ingredients and is estimated to cost about three cents per apple. The team is now working to scale production for commercial use and is exploring a version for home kitchens.
Facts First
- A new biodegradable fruit wash removes 86–94% of pesticide residues from apples, far more than tap water or baking soda.
- The wash is made from starch, iron, and tannic acid, forming microscopic sponge-like clusters that attach to pesticides.
- An optional edible coating can be applied to slow browning, reduce moisture loss, and inhibit harmful bacteria.
- The coating kept grapes plump for 15 days at room temperature and apples crisp and less browned for two days refrigerated.
- Researchers estimate the treatment costs about three cents per apple and are scaling production for commercial adoption.
What Happened
Researchers at the University of British Columbia (UBC) announced the creation of a biodegradable fruit wash designed to remove pesticide residue and extend produce freshness. The wash is composed of starch-based particles, iron, and tannic acid, a natural plant compound. These ingredients form microscopic, sponge-like clusters that attach to and remove pesticide residues from fruit surfaces. In tests on apples, the wash removed between 86% and 94% of commonly used pesticide residues, a significant improvement over typical cleaning methods like tap water or baking soda, which remove less than 50%. The process includes an optional step where fruit is dipped in a thin, edible coating that acts as a protective barrier.
Why this Matters to You
This development may lead to safer and longer-lasting produce in your home. The wash could significantly reduce pesticide residues on the fruits you buy, potentially lowering your exposure to these chemicals. The optional edible coating could help you keep fruits like apples and grapes fresh for longer, reducing food waste and saving money. The coating's antimicrobial properties may also help inhibit harmful bacteria on your produce. Researchers estimate the treatment cost is approximately three cents per apple, suggesting it could be an affordable addition to food processing.
What's Next
The research team is working on scaling up production for adoption by food processing facilities, which could bring treated produce to supermarkets. The team is also exploring the development of a home version of the product, such as a spray or a tablet to be added to water, which you might eventually use in your own kitchen.