“Smart Extraction Chain” with Green Solvents: Extraction of Bioactive Compounds from Picea abies Bark Waste for Pharmaceutical, Nutraceutical and Cosmetic Uses

What if sawmill waste could become a treasure trove of health-boosting compounds? A new 'smart extraction chain' turns bark waste into potent extracts for medicine, supplements, and cosmetics.

The bark of Picea abies, a common spruce, is often discarded as sawmill waste. But beneath its rough exterior lies a wealth of bioactive secondary metabolites. Researchers have now devised a clever two-step extraction to unlock these hidden gems, using supercritical CO2 in the first phase, followed by green solvents like ethanol and water in the second. They also tested three techniques—maceration, ultrasound, and microwave—to see which works best.

Key Points

• Two-step extraction with supercritical CO2 and green solvents.
• Nineteen extracts compared for yield and bioactive content.
• SCO2 extract best inhibits amylase, rich in abietanes.