Abstract
The production process of the yerba mate creates a relevant waste quantity, which is reused in different ways. However, these approaches do not value this material's bioactive compounds. To obtain a valuable extract from yerba mate waste, we used pressurized liquid extraction (PLE) with distilled water as solvent considering different conditions of temperature, solvent flow rate, pressure, static extraction time, and sample particle size. To evaluate the biological properties of the extracts, we measured the total phenolic content (TPC) and chemical composition, besides analyzing their antioxidant activity. The best TPC result (1256.18 mgGAE.100 gYMW−1) was reached at 120 °C, 9 mL.min−1, and 10 MPa. Temperature significantly influenced all extracts’ biological characteristics, especially the phenolic content. Our analyses revealed that the PLE technique is a viable approach for obtaining extracts with good biological properties. These results can guide the yerba mate industries to develop higher added-value products from a residue.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
