Determination of bioactive compounds obtained by the green extraction of taioba leaves (Xanthosoma taioba) on hydrothermal processing

Forget the same old greens—taioba leaves hide a treasure trove of antioxidants, and a simple cooking step might be the key to unlocking their full potential.

In the quest for natural food additives, scientists have turned to an unlikely hero: the taioba leaf. This tropical green, often overlooked, was cooked and freeze-dried into a powder, then put under the microscope—literally. The results? A powerhouse of bioactive compounds that could soon grace your food in a whole new way.

The team quantified the leaf's key players: flavonoids at 17.15 mg per 100 g, ascorbic acid (vitamin C) at 58.3 mg per 100 g, and total polyphenols at 24.15 mg gallic acid equivalents per 100 g. But the standout was the total antioxidant activity, measured by the ABTS assay, which clocked in at an impressive 37.35 µg Trolox equivalents per gram.

Using infrared spectroscopy, they spotted telltale bands for hydroxyl groups, pointing to cellulose, hemicellulose, and lignin—the structural fibers that give the leaves their toughness. Scanning electron microscopy revealed a fibrous, irregular surface, confirming the leaf's robust architecture.

These findings suggest that taioba leaves, after simple hydrothermal processing, are a promising, sustainable source of bioactives for functional foods. It's a green solution with a green leaf—ready to boost nutrition across industries.

Key Points

• Taioba leaf powder boasts high antioxidant activity (ABTS 37.35 µg TE/g).
• Contains flavonoids (17.15 mg/100g), vitamin C (58.3 mg/100g), polyphenols (24.15 mg/100g).
• Green extraction via cooking and freeze-drying; FTIR and SEM reveal fibrous structure.