Multiple Types of Plastic Are Turned into Vinegar Using Sunlight-Powered Process Without Emissions

Waterloo PhD student Wei Wei, who led the research – credit, University of Waterloo, released

Researchers at the University of Waterloo have discovered a way to turn plastic waste into acetic acid, the main ingredient of vinegar, using sunlight.

The breakthrough offers a promising new approach to reducing plastic pollution through photocatalysis, while simultaneously creating a useful, value-added chemical product through a process inspired by nature.

“Our goal was to solve the plastic pollution challenge by converting microplastic waste into high-value products using sunlight,” said Dr. Yimin Wu, a professor of mechanical and mechatronics engineering at the University of Waterloo, Canada.

Plastic waste, notably microplastics, has been found across many of the planet’s ecosystems, raising concerns about threats to terrestrial and marine life as well as human health. Plastic recycling rates remain low around the globe.

To tackle this problem, the team developed a bio-inspired photocatalysis process using iron atoms embedded in carbon nitride, a way that certain types of fungi break down organic matter using enzymes.

When exposed to sunlight, the material drives a series of chemical reactions that transform plastic polymers into acetic acid with high selectivity. The reaction takes place in water, making it particularly relevant for addressing plastic pollution in aquatic environments.

Acetic acid is widely used in food production, chemical manufacturing and energy applications. The study shows it can be produced from common plastic wastes, including PVC, PP, PE and PET, and remains effective across mixed plastic compositions.

This makes the approach well suited to real-world waste streams, offering a promising alternative to plastic incineration, and could support more circular approaches to material use while providing a new strategy for upcycling plastics.

“Both from a business and societal perspective, the financial and economic benefits associated with this innovation seem promising,” said Roy Brouwer, executive director of the Water Institute and a coauthor of the article supporting the techno-economic analysis.

“This method allows abundant and free solar energy to break down plastic pollution without adding extra carbon dioxide to the atmosphere,” Wu adds.

The findings also point to new possibilities for addressing microplastics directly. Because the process degrades plastics at the chemical level, it could help prevent the accumulation of microplastics in water systems.While still at the laboratory stage, the team envisions that this approach could be adapted for scalable, solar-driven recycling and environmental cleanup and the photocatalytic upcycling system can be further enhanced through strategic engineering of the materials and manufacturing processes. Multiple Types of Plastic Are Turned into Vinegar Using Sunlight-Powered Process Without Emissions

Read More........→March 11, 2026

A Rare Cancer-Fighting Plant Compound has Finally Been Decoded

Anti-cancer plant enzyme uncovered by Tuan-Anh Nguyen and Dr Thu-Thuy Dang – UBC Okanagan

Canadian researchers have figured out how plants make a rare natural substance—mitraphylline—with its potential for fighting cancer and becoming a sustainable new medicine.

Mitraphylline is part of a small and unusual family of plant alkaloids, molecules that are defined by their distinctive twisted ring shapes, which help give them powerful anti-tumor and anti-inflammatory effects.

For years, scientists knew these compounds were valuable but had little understanding of how plants actually assembled them at the molecular level.

In solving a long standing biological mystery, progress came in 2023, when a research team led by Dr. Thu-Thuy Dang at the University of British Columbia-Okanagan identified the first known plant enzyme capable of creating the signature ‘spiro’ shape found in these molecules.

Building on that discovery, doctoral student Tuan-Anh Nguyen led new work to pinpoint two key enzymes involved in making mitraphylline—one enzyme that arranges the molecule into the correct three dimensional structure, and another that twists it into its final form.

“This is similar to finding the missing links in an assembly line,” says Dr. Dang, the university’s Research Chair in Natural Products Biotechnology. “It answers a long-standing question about how nature builds these complex molecules and gives us a new way to replicate that process.”

Red vein kratom leaves by Jade at Thehealingeast – CC BY-SA 4.0

Many promising natural compounds exist only in extremely small quantities within plants, making them expensive or impractical to produce using traditional laboratory methods. Mitraphylline is a prime example. It appears only in trace amounts in tropical coffee trees such as Mitragyna (kratom) and Uncaria (cat’s claw).

By identifying the enzymes that construct and shape mitraphylline, scientists now have a clear guide for recreating this process in more sustainable and scalable ways.

Toward Greener Drug Production

“With this discovery, we have a green chemistry approach to accessing compounds with enormous pharmaceutical value,” says Nguyen. “This is a result of UBC Okanagan’s research environment, where students and faculty work closely to solve problems with global reach.”

“Plants are fantastic natural chemists,” Dr. Dang said.

“Our next steps will focus on adapting their molecular tools to create a wider range of therapeutic compounds.”“Being part of the team that uncovered the enzymes behind spirooxindole compounds has been amazing,” added Nguyen, whose team collaborated with researchers at the University of Florida. A Rare Cancer-Fighting Plant Compound has Finally Been Decoded

Read More........→January 08, 2026