Efficient recovery of procyanidins from grape residue by UAE-NADES and macroporous resin

Grape waste, a mountain of seeds and skins, hides a treasure of health-boosting compounds. Now, a green method unlocks them without harsh chemicals.

Every year, winemaking leaves behind millions of tons of grape pomace—skins, seeds, and stems—often discarded as waste. But inside this byproduct lies procyanidins, powerful antioxidants with promising health benefits. A new study offers a clever, eco-friendly way to extract them using ultrasound and natural deep eutectic solvents (NADES), a mix of plant-based compounds that acts as a green solvent. The method is like a gentle but powerful shake, using sound waves to help the solvent pull out the good stuff.

Key Points

• G
• r
• e