Optimized carbonylation treatment of Litopenaeus vannamei matrix decreased its immunoreactivity and improved edible
Meng Liu1, Ming-Xuan Wu2, Fei-Fei Gong3
1School of Marine Biology, Xiamen Ocean Vocational College, Applied Technology Engineering Center of Fujian Provincial Higher Education for Marine Resource Protection and Ecological Governance, Xiamen Key Laboratory of Intelligent Fishery, Xiamen, Fujian 361100, China; College of Ocean Food and Biological Engineering, Jimei University, 43 Yindou Road, Xiamen, Fujian 361021, China.
Abstract:
The study aimed to investigate how carbonylation affects the immunoreactivity and edible quality of the Litopenaeus vannamei matrix. The carbonylation treatment conditions of the shrimp matrix were optimized. Firstly, the treatment condition is optimized with 1.0 mmol/L malonaldehyde at 37 °C, 12 h. The optimized carbonylated shrimp showed lower immunoreactivity, carbonyl group, and free amino acids. Then the edible quality was evaluated, optimized carbonylated shrimp matrix presented better digestibility and the continuous digestion products showed lower immunoreactivity. Optimized carbonylated shrimp for the other sensory indicators showed better texture properties and an inviting appearance. Looser microstructure by scanning electron microscopy contributed to the higher digestibility, lower immunoreactivity, and better edible quality for optimized carbonylated shrimp matrix. Besides, more potentially modified amino acid residues exposed on the allergen surface may be the other reason. In conclusion, optimized carbonylation treatment reduced the immunoreactivity and improved the edible quality of shrimp.
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