One of the empowering actions for the circular economy is deriving value from waste. In this context, recycling waste agro-food streams to make more sustainable chemical products through greener technologies promises to move away from the linear development model based on continuous growth and increasing resource throughput. We describe here the use of supercritical fluid extraction with carbon dioxide to extract fatty acids from waste pomace deriving from the preserves industry along with a comparison using hexane as solvent. The fatty acids extracted from the seeds and peels of raspberry, blueberry, wild strawberry, pomegranate, blackberry and blackcurrant using supercritical CO₂ as a greener solvent were purer and richer in essential fatty acids than the hexane ones. The wild strawberry pomace extraction with supercritical CO₂ is a representative example: selectivity towards fatty acids was 26 wt% (vs. 1.4 % with hexane) and the extracts contained, 145.8 mg mL⁻¹ polyunsaturated, 64.0 mg mL⁻¹ monounsaturated and 46.8 mg mL⁻¹ saturated fatty acids (vs. 14.3 mg mL⁻¹ total fatty acids with hexane).

循环经济的赋权行动之一是从浪费中获取价值。在这种情况下，通过利用更绿色的技术来回收农业食品废料流，以生产更可持续的化学产品，有望摆脱基于持续增长和资源吞吐量增加的线性发展模式。我们在这里描述了使用超临界流体萃取和二氧化碳萃取来从果脯工业衍生的废渣中提取脂肪酸，以及使用己烷作为溶剂的比较。使用超临界CO ₂从树莓，蓝莓，野草莓，石榴，黑莓和黑加仑子的种子和果皮中提取的脂肪酸作为绿色溶剂，必需脂肪酸比己烷更纯净，更丰富。用超临界CO ₂提取野草莓果渣是一个典型的例子：对脂肪酸的选择性为26 wt％（而用己烷为1.4％），提取物中含有145.8 mg mL ^-1多不饱和，64.0 mg mL ^-1单不饱和和46.8 mg mg mL ^-1饱和脂肪酸（相对于含己烷的14.3 mg mL ^-1总脂肪酸）。