Postmortem Metabolite Profile Changes of Mud Crab(Scylla paramamosain)Under Different Storage Conditions

• 作者: ZHANG Limin GUO Liping MU Changkao YE Yangfang WANG Chunlin
• 来源期刊: 中国海洋大学学报（自然科学英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: Life and Fisheries Sciences
• 页码范围: 608-618
• 页数: 11页
• 语种: 英文

摘要

Mud crab(SScylla paramamosain)is one of the most consumed crabs in China.Generally,it is believed that dead mud crabs are not edible.Herein,we investigated the postmortem metabolite profile changes of the muscle and hepatopancreas of mud crab associated with storage method using nuclear magnetic resonance-based metabolomics coupled with multivariate data analysis.Our results showed that postmortem changes of trimethylamine,organic acids(lactate,formate,and succinate),as well as ATP and its breakdown products are closely affected by the storage method.These metabolites can be used as indicators for monitoring loss of crab freshness.Furthermore,dead mud crabs preserved an edible quality at least for 4h at room temperature,12 h on ice,and 16 d at-20℃,strongly suggesting that dead crab consumption quality should be determined by freshness.They shouldn't be discarded without considering the effects of different storage conditions on their freshness.