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Abstract：
To improve the quality of cultured large yellow croaker (Larimichthys crocea), this study was performed to study the impacts of glycerol monolaurate (GML) on the nutritional value, growth performance, muscle texture, and taste intensity of L. crocea. The results showed that GML as a feed additive significantly increased the crude lipid content and reduced the diameters of muscle fibers, which in turn markedly altered the flesh texture in terms of cohesiveness. Moreover, the taste indicators (umami and richness) and flavor-related amino acid (glutamic acid, glycine, and proline) contents of L. crocea muscle were significantly higher in the GML group. Metabolomic and gene expression analyses showed that GML supplementation could significantly improve amino acid biosynthesis and metabolism, promote protein and lipid synthesis, and activate myogenic-related signaling pathways of L. crocea. Consequently, adding an appropriate amount of GML to fish feed would be conducive to providing healthy, nutrient-rich and acceptably flavored aquatic-products.
摘要：
为了提高养殖大黄鱼(大黄鱼)的品质，这项研究是为了研究单月桂酸甘油酯（GML）对营养价值的影响，增长业绩，肌肉质地，和大黄鱼的味道强度。结果表明，GML作为饲料添加剂显著提高了粗脂肪含量，降低了肌纤维直径，这反过来显着改变了肉质的凝聚力。此外，味道指标(鲜味和丰富度)和与风味相关的氨基酸(谷氨酸，甘氨酸,GML组大黄鱼肌肉的脯氨酸）含量显着升高。代谢组学和基因表达分析表明，补充GML可以显着改善氨基酸的生物合成和代谢，促进蛋白质和脂质合成，并激活大黄乳杆菌的肌源性相关信号通路。因此,在鱼饲料中添加适量的GML将有助于提供健康的食物，营养丰富且风味可接受的水产品。
