In the heart of northern Portugal, a humble forestry by-product is gaining attention for its potential to revolutionize industries ranging from nutraceuticals to cosmetics. Researchers, led by Diana Barros from the Center for Research and Development in Agrifood Systems and Sustainability at the Polytechnic Institute of Viana do Castelo, have uncovered a sustainable method to extract valuable phenolic compounds from maritime pine bark (*Pinus pinaster* subsp. *atlantica*). Their findings, published in the journal *Sustainable Chemistry* (translated from Portuguese), could pave the way for a more circular economy in the forestry sector.
The study focuses on microwave-assisted extraction (MAE), a green technology that optimizes the recovery of phenolic compounds—known for their strong antioxidant properties. By experimenting with different solvents, extraction times, and temperatures, the team discovered that a hydroethanolic solvent (50:50 water–ethanol) at 130°C for just 15 minutes yielded the best results. “We were able to achieve a high extraction rate of 11.13% (*w*/*w*), with significant concentrations of total phenolics and condensed tannins,” Barros explained. “This method not only enhances the recovery of these valuable compounds but also ensures their stability and bioactivity.”
The extracted compounds showed antioxidant activities comparable to commercial products like Pycnogenol®, a well-known pine bark extract used in dietary supplements and skincare products. This breakthrough could open new avenues for the forestry industry, transforming what was once considered waste into a profitable resource. “The potential applications are vast,” Barros noted. “From biomedical uses to nutraceuticals and cosmetics, these extracts could become a sustainable and cost-effective alternative to existing products.”
The research underscores the importance of green extraction technologies in promoting a circular economy. By valorizing forestry by-products, industries can reduce waste and create new revenue streams. “This study highlights the untapped potential of forestry residues,” Barros said. “It’s a step towards a more sustainable future, where waste is minimized, and resources are fully utilized.”
As the world increasingly turns to sustainable solutions, the findings from this study could inspire further innovation in the field. The use of MAE not only improves efficiency but also aligns with environmental goals, making it a promising technology for future applications. With the growing demand for natural and eco-friendly products, the commercial impact of this research could be substantial, benefiting both the environment and the economy.
In an era where sustainability is paramount, the valorization of maritime pine bark stands as a testament to the power of innovative research. As industries continue to explore green technologies, the insights from this study could shape the future of extraction methods, paving the way for a more sustainable and profitable future.