Biodegradable wash removes pesticides fast

April 14, 2026

A group of engineers in Canada has introduced an innovative biodegradable fruit wash designed to solve two major concerns in food consumption: pesticide contamination and rapid spoilage of fresh produce.

This advanced cleaning solution not only eliminates the majority of surface pesticide residues but also helps fruits stay fresh longer. The breakthrough could significantly improve food safety while reducing waste and grocery costs for households across the United States.

Proven to remove over 86% of pesticides

Laboratory testing revealed that the new fruit wash can remove more than 86% of pesticide residues from produce surfaces. In some cases, removal rates reached as high as 94%, far outperforming traditional washing methods such as tap water, baking soda, or starch-based rinses.

Even after standard rinsing, fruits and vegetables often retain trace chemicals. While these levels typically fall within regulatory safety limits, long-term exposure remains a concern—especially for individuals who consume large amounts of fresh produce.

Developed with safety and simplicity in mind

“Our objective was to develop a safe, effective, and affordable fruit wash that enhances both food safety and quality,” explained Tianxi Yang, assistant professor at the University of British Columbia’s Faculty of Land and Food Systems.

She added that consumers should not have to worry about chemical residues when choosing healthy foods.

The research was partly inspired by personal concerns, as Dr. Yang explored safer options after noticing her child’s frequent consumption of fresh berries.

How the fruit wash works

The solution uses plant-derived starch particles sourced from crops like corn and potatoes. These are combined with iron and tannic acid—a natural compound found in tea and wine.

Together, these ingredients form microscopic, sponge-like structures that cling to pesticide molecules and effectively lift them from the surface of fruits.

Edible coating helps preserve freshness

In addition to cleaning, the process includes a second step that applies a thin, edible coating to the fruit.

This protective layer acts as a breathable barrier, slowing oxidation and minimizing moisture loss without interfering with the fruit’s natural respiration.

Tests showed that treated apple slices experienced significantly less browning and dehydration over a two-day refrigeration period compared to untreated samples.

Added antimicrobial and nutritional benefits

Beyond preserving freshness, the coating also demonstrated antimicrobial properties, helping to reduce the growth of harmful bacteria on fruit surfaces.

The researchers confirmed that the process introduces only minimal amounts of iron, staying well within recommended daily intake levels established by North American health authorities.

According to Dr. Yang, the formulation may even provide additional health benefits by incorporating micronutrients and plant-based compounds.

Designed for real-world use

The biodegradable wash was created with scalability in mind. Its ingredients are inexpensive, easy to mix with water, and suitable for both commercial food processing and potential household use.

Early cost estimates suggest the treatment would cost around three cents per apple—comparable to existing commercial coatings but with the added advantage of pesticide removal.

Future applications and consumer potential

Researchers are now working to adapt the formula for large-scale production and testing its effectiveness across a wider range of fruits and storage conditions.

The team is also exploring a consumer-friendly version, such as a dissolvable tablet or spray that could be used at home.

“Imagine being able to add a simple solution to water before washing your fruit,” Dr. Yang suggested.

Before reaching the market, the product will require further testing and regulatory approval. However, the long-term goal is clear: to provide consumers with safer, longer-lasting produce while reducing food waste.

A step toward safer, longer-lasting produce

This new biodegradable fruit wash represents a promising advancement in food technology—offering a practical way to reduce pesticide exposure, extend shelf life, and improve overall confidence in fresh produce.

As research progresses, it could become a game-changer for both consumers and the global food industry.