有机废物厌氧发酵液链延长合成中链脂肪酸研究进展

有机废物产量巨大，具备较高的资源化利用潜力。以有机废物厌氧发酵液为底物，通过链延长工艺生产中链脂肪酸，可有效提升产物的经济价值，因而是一种极具潜力的有机废物资源化方法。梳理了有机废物厌氧发酵液链延长的机理以及影响因素，分析了不同有机废物在厌氧发酵链延长中的作用，并提出了今后研究的方向。学术界已获得的研究结果表明，以混合有机废物作为底物进行厌氧发酵，可以实现氮源和碳源的相互补充，其获得的发酵液中挥发性脂肪酸浓度更高，这对后续的链延长产中链脂肪酸具有良好的促进作用。

Study progress on chain elongation of anaerobic fermentation liquid from organic wastes for medium-chain fatty acid synthesis

The production of organic wastes is huge, presenting a high potential of resource utilization. The production of medium chain fatty acid (MCFA) by chain elongation process using organic wastes anaerobic fermentation liquid as substrate can effectively enhance the economic value of the products, thus is a highly promising method for resource utilization of organic waste. The mechanisms and influencing factors of chain elongation from organic waste fermentation liquids were combed, the role of different organic waste in anaerobic fermentation and further chain elongation was analyzed, the directions for future research were also proposed. The results of studies that have been obtained in academia showed that mixed organic wastes as substrate of anaerobic fermentation can achieve mutual complementation of nitrogen and carbon source, and the higher volatile fatty acid concentration was achieved in the fermentation liquid, which can promote the subsequent chain elongation and MCFA production.