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Article

Slight Increases in Salinity Improve Muscle Quality of Grass Carp (Ctenopharyngodon idellus)

1
National Demonstration Center for Experimental Aquaculture Education, Hubei Provincial Engineering Laboratory for Pond Aquaculture, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
2
Institute of Hydrobiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
*
Author to whom correspondence should be addressed.
Academic Editor: Maria Angeles Esteban
Received: 22 January 2021 / Revised: 21 February 2021 / Accepted: 21 February 2021 / Published: 24 February 2021
(This article belongs to the Special Issue Environmental Impacts of Land-Based Aquaculture)
Fish muscle quality is an important parameter in the aquaculture industry. In this study, we analyzed and compared the muscle quality of grass carp (Ctenopharyngodon idellus) cultured at salinities of 0‰, 3‰, and 6‰ (GC0, GC3, GC6). There was no significant difference in crude protein and crude fat content of muscle between GC0 and GC3. Crude fat was significantly lower in GC6 compared to the other groups. GC3 and GC6 had higher hydroxyproline content, which suggested that these groups had higher collagen content. GC3 and GC6 had higher contents of free amino acids and umami amino acids than GC0, but there was no significant difference in sweet or sour amino-acid content among groups. GC3 and GC6 had better texture properties, including hardness, gumminess, chewiness, resilience, and springiness, than GC0. GC3 had the highest water-holding capacity among the groups. As the salinity increased, the diameter of muscle fibers decreased and the sarcolemma showed a thickening trend. These results suggest that a slight increase in salinity (i.e., 3‰) can effectively improve the muscle quality of grass carp. View Full-Text
Keywords: muscle quality; grass carp; composition; salinity; texture property muscle quality; grass carp; composition; salinity; texture property
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MDPI and ACS Style

Zhang, X.; Shen, Z.; Qi, T.; Xi, R.; Liang, X.; Li, L.; Tang, R.; Li, D. Slight Increases in Salinity Improve Muscle Quality of Grass Carp (Ctenopharyngodon idellus). Fishes 2021, 6, 7. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes6010007

AMA Style

Zhang X, Shen Z, Qi T, Xi R, Liang X, Li L, Tang R, Li D. Slight Increases in Salinity Improve Muscle Quality of Grass Carp (Ctenopharyngodon idellus). Fishes. 2021; 6(1):7. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes6010007

Chicago/Turabian Style

Zhang, Xi, Zhiyuan Shen, Tianpeng Qi, Rujuan Xi, Xiao Liang, Li Li, Rong Tang, and Dapeng Li. 2021. "Slight Increases in Salinity Improve Muscle Quality of Grass Carp (Ctenopharyngodon idellus)" Fishes 6, no. 1: 7. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes6010007

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