Label-free quantification proteomics reveals potential proteins associated with the freshness status of crayfish (Procambarus clarkii) as affected by cooking
2022
Tang, Chuhan | Xu, Yanshun | Yu, Dawei | Xia, Wenshui
In order to characterize the freshness status of raw material of cooked crayfish products, protein and physicochemical changes were investigated in raw and cooked crayfish from fresh-live state to the early postmortem using Label-free quantification proteomics, total volatile basic nitrogen (TVB-N) and biogenic amines (BAs) analysis. Results showed that the TVB-N and BAs contents in both raw and cooked crayfish remained low levels and no obvious changes were observed within 24 h of postmortem storage at 4 °C. Altogether, six differentially expressed proteins (DEPs) were detected in both C6/C0 and C24/C0 groups by proteomics. Furthermore, five among the six DEPs were verified both in cooked and raw crayfish samples by parallel reaction monitoring. Among the six DEPs, “Unigene990_S_0_Gene.8754” changed most significantly with the increasing of postmortem time and not obviously influenced by heating, indicating that “Unigene990_S_0_Gene.8754” may be highly associated to the freshness status of crayfish.
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