Microbiological quality of the fish saw (Scomberomorus brasiliensis) and the ice used for its conservation

This study aimed at evaluating the microbiological quality of the saw fish (S. brasiliensis) landed in the city of Raposa (MA) and the ice used in its conservation. Samples of ice and saw fish were subjected to analysis to determine the Most Probable Number (MPN) of coliforms, thermo-tolerants and Escherichia coli. Fish samples were also tested for Staphylococcus coagulase positive, Salmonellaspp. and Aeromonas spp. Fishermen were given a questionnaire with 20 questions concerning the handling of the fish. The ice samples showed unsatisfactory microbiological quality. The saw fish was contaminated with A. hydrophila, which means it could convey this agent to be consumed by the population.

本研究旨在评估在拉波萨市（Raposa，MA）上岸的巴西锯鳐（*S. brasiliensis*）及其保鲜所用冰块的微生物学质量。研究人员采集冰块与锯鳐样本，以测定大肠菌群、耐热菌及大肠埃希氏菌（*Escherichia coli*）的最大可能数（Most Probable Number，简称MPN）；同时对鱼类样本开展凝固酶阳性葡萄球菌、沙门氏菌属（*Salmonella* spp.）及气单胞菌属（*Aeromonas* spp.）的检测，并向渔民发放含20个问题的问卷，以调查鱼类的处理流程。检测结果显示，冰块样本的微生物学质量未达合格标准；本次研究的锯鳐样本检出嗜水气单胞菌（*A. hydrophila*），提示该病原体可通过食用受污染锯鳐传播给消费人群。