Xu Houguo, Luo Xing, Wei Yuliang, Liang Mengqing
Department of Food Engineering and Nutrition, Yellow Sea Fisheries Research Institute, Qingdao 266071, China.
Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
Food Chem X. 2022 Mar 24;14:100293. doi: 10.1016/j.fochx.2022.100293. eCollection 2022 Jun 30.
Lysophosphatidylcholine (LPC) has been widely used as emulsifier in animal feeds to enhance the lipid utilization. However, the effects of LPC on fillet quality has rarely been known. The present study was the first time to investigate the response of fish muscle lipidomics to dietary LPC supplementation. Turbot muscle samples were collected after a 56-day feeding trial where the experimental diet contained 0 or 0.25% LPC. Targeted tandem mass spectrometry was used in the lipidomic analysis. A total of 62 individual lipids (58 up-regulated and 7 down-regulated by LPC) showed significant difference in concentration in response to dietary LPC. Most of these differentially abundant lipids were diacylglycerol, free fatty acid and cardiolipin, and they all were up-regulated by dietary LPC. However, LPC exerted only marginal effects on muscle fatty acid composition and lipid content. The effects of dietary LPC on fillet lipid composition cannot be neglected in fish product evaluation.
溶血磷脂酰胆碱（LPC）已被广泛用作动物饲料中的乳化剂，以提高脂质利用率。然而，LPC对鱼片品质的影响却鲜为人知。本研究首次探究了鱼类肌肉脂质组学对日粮中添加LPC的反应。在一项为期56天的饲养试验后采集了大菱鲆肌肉样本，试验日粮中含有0或0.25%的LPC。脂质组学分析采用靶向串联质谱法。共有62种个体脂质（58种被LPC上调，7种被LPC下调）在日粮LPC作用下浓度有显著差异。这些差异丰富的脂质大多是二酰甘油、游离脂肪酸和心磷脂，它们均被日粮LPC上调。然而，LPC对肌肉脂肪酸组成和脂质含量仅产生了微小影响。在鱼产品评估中，日粮LPC对鱼片脂质组成的影响不可忽视。
