Sustainable Extraction of Hedera helix Bioactive Compounds via Synergy of Natural Deep Eutectic Solvent and Ultrasound: Process Optimization, Mechanistic Insights and Anti-Colon Cancer Activity

What if the key to unlocking nature's cancer-fighting compounds lies in a simple mix of everyday chemicals and sound waves? A new study shows how this eco-friendly combo extracts powerful bioactives from ivy leaves with remarkable efficiency.

Ivy, or Hedera helix, is more than just a climbing plant—it's a treasure trove of bioactive compounds like saponins, flavonoids, and phenolic acids. But getting these molecules out of the plant has always been a challenge. Traditional methods often rely on harsh solvents and high energy, which is neither sustainable nor gentle on the delicate compounds.

Enter the dynamic duo: natural deep eutectic solvents (NADES) and ultrasound. NADES are eco-friendly solvents made from natural ingredients, while ultrasound acts like a microscopic jackhammer, breaking down cell walls to release the goods. The researchers tested various NADES formulations and found a ternary mix of malonic acid, dimethylurea, and butanediol to be the star performer, extracting eight target compounds from ivy leaves with impressive efficiency.

But it's not just about the mix—it's about the method. By fine-tuning the ultrasound process, the team discovered the sweet spot: 45 minutes, a solid-to-liquid ratio of 1:54, and a temperature of 42°C. This wasn't guesswork; they used response surface methodology to optimize every variable. Microscopy images revealed the ultrasound's disruptive power, showing how it pokes holes in plant cells to let the solvent seep in.

The payoff? The extracted compounds showed strong activity against HT-29 colon cancer cells in lab tests. This isn't just a lab curiosity—it's a blueprint for sustainable, large-scale production of plant-based functional products. The future of natural medicine may well be rooted in this green chemistry revolution.

Key Points

• NADES-UAE extracts 8 compounds from ivy leaves efficiently.
• Optimized: 45 min, 1:54 g/mL, 42°C.
• Extract shows strong anti-colon cancer activity.