期刊
FOOD CHEMISTRY
卷 393, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2022.133392
关键词
Cottonseed protein concentrate; Soybean meal; Flesh quality; Lipid metabolism; Nile tilapia; Butyrate
资金
- National Key Research and Devel-opment Program of China [2019YFD0900200]
- Na-tional Natural Science Foundation of China [31972798]
This study found that replacing soybean meal protein with cottonseed protein concentrate can improve the flesh quality of Nile tilapia. Cottonseed protein concentrate can reduce muscle lipid content and alter muscle texture. In addition, the intake of cottonseed protein concentrate can suppress hepatic lipid synthesis and promote lipid breakdown.
Flesh quality is influenced by diet components, but the underlying mechanism remains unclear. This study aimed to investigate the effect of replacing soybean meal (SBM) protein with cottonseed protein concentrate (CPC) at different levels (0%, CK; 15%, CPC15; 30%, CPC30 and 45%, CPC45) on the flesh quality of Nile tilapia. The results indicated that different protein sources influenced muscle amino acid composition instead of fatty acid composition. Lower muscle lipid content was found in CPC45, which in turn significantly altered the muscle texture. The hepatic lipid metabolism-related genes were detected and we found that CPC45 significantly suppressed the lipogenesis and promoted lipolysis. Higher content of microbiota-derived butyrate was found in the intestinal content of CPC45 and butyrate could decrease the lipid accumulation in vitro. Replacing SBM with CPC increased the intestinal butyrate to suppress the lipogenesis in the liver which may account for the increased muscle hardness.
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