Optimization and Characterization of Peach Kernel Oil Extraction Using Supercritical Fluid Extraction

This study optimized the extraction of peach kernel oil (PKO) using supercritical fluid extraction (SFE), which was found to be more efficient and environmentally friendly than traditional methods like Soxhlet Extraction (SE) and Microwave Assisted Extraction (MAE). SFE produced PKO with higher oxidative stability and greater contents of beneficial fatty acids, flavonoids, and phenols. The PKO extracted through SFE also showed protective effects on human hair follicle keratinocytes against oxidative damage. Although the extraction yield of SFE (46.44%) was lower than SE (54.25%), it was higher than MAE (36.54%). The study concluded that SFE is an effective method for extracting high-quality PKO with potential industrial applications, particularly in antioxidative cosmetics and functional foods, though further research is needed to explore its effects on hair loss and long-term safety for dietary use.