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Selenium Accumulation, Antioxidant Enzyme Levels, and Amino Acids Composition in Chinese Mitten Crab (Eriocheir sinensis) Fed Selenium-Biofortified Corn

1
Jiangsu Bio-Engineering Research Center of Selenium, Suzhou 215123, China
2
School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
3
College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, China
4
Suzhou Polytechnic Institute of Agriculture, Suzhou 215008, China
5
Institute of Agricultural Resource and Environment, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
6
School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Nutrients 2018, 10(3), 318; https://doi.org/10.3390/nu10030318
Received: 4 January 2018 / Revised: 20 February 2018 / Accepted: 1 March 2018 / Published: 7 March 2018
(This article belongs to the Special Issue Selenium and Selenoproteins in Environment, Health and Disease)
The effects of selenium (Se)-biofortified corn on the total Se contents, the antioxidant enzyme levels, and the amino acids composition in Chinese mitten crab (Eriocheir sinensis) during the stage of the fifth shelling to maturity were investigated in the present study. The culture density of crabs was 600 per 667 m2, and they were continuously fed 120.4 mg Se from Se-biofortified corn per 667 m2 every two days for 90 days. The results showed that the total muscle Se levels in the crabs were significantly increased (p < 0.05). Activities of hemolymph supernatant enzymes including alkaline phosphatase (AKP), lysozyme (LZM), glutathione peroxidase (GPx), and superoxide dismutase (SOD) were also enhanced (p < 0.05). The protein and crude fat levels at maturity were higher than those at the fourth molt. The levels of total essential amino acids (∑EAAs) and total delicious amino acids (∑DAAs) were significantly increased (p < 0.05). We demonstrate that the feeding of Se-biofortified corn could significantly improve total muscle Se concentrations and hemolymph supernatant antioxidant enzyme activities in Chinese mitten crab, and slow down the rapid decline of ∑EAAs and ∑DAAs at maturity, thus improving the nutritional quality of Chinese mitten crab. View Full-Text
Keywords: Se-biofortified corn; Chinese mitten crab; muscle Se level; hemolymph supernatant; antioxidant levels; amino acids content Se-biofortified corn; Chinese mitten crab; muscle Se level; hemolymph supernatant; antioxidant levels; amino acids content
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Yuan, L.; Zhang, R.; Ma, X.; Yang, L.; Zheng, Q.; Chen, D.; Li, M.; Fan, T.; Liu, Y.; Pan, L.; Yin, X. Selenium Accumulation, Antioxidant Enzyme Levels, and Amino Acids Composition in Chinese Mitten Crab (Eriocheir sinensis) Fed Selenium-Biofortified Corn. Nutrients 2018, 10, 318.

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