Pitaya (Stenocereus spp.) is recognized for its nutritional properties, with its seeds and peel accounting for 22–29% of the fruit’s mass, often treated as agro-industrial waste. This study evaluates the potential of green solvents for oil extraction from pitaya seeds, aiming to enhance the valorization of these by-products. The efficiency of ethanol and supercritical CO₂ (SC-CO₂) was compared to hexane, a commonly used solvent. Soxhlet extractions were performed using ethanol and hexane, while SC-CO₂ extractions were conducted under two conditions: 180 bar at 50 °C and 250 bar at 35 °C. Oil yields ranged from 4.9% to 24.7%, with hexane achieving the highest yield. However, SC-CO₂ extraction demonstrated its potential as a sustainable alternative. Future studies will focus on characterizing the fatty acid profile of the extracted oil to further assess its nutritional and industrial applications.

The cultivation of cinnamon (Cinnamomum zeylanicum) is one of the most important worldwide

The pirul tree (Schinus molle L