Risk Analysis and Safety Assessment of Microbiological and Chemical Hazards in the Dried Sea Mustard Undaria pinnatiGda Distributed in Markets

摘要

For the safety assessment of microbiological and chemical hazards in dried sea mustard, fifteen samples of dried sea mustards Undaria pinnatMda were purchased from the supermarkets distributed throughout Korea. The contamination levels of total viablebacteria, coliforms, Escherichia coli, and nine pathogenic bacteria Staphylococcus aureus, Salmonella spp., Listeria monocytogenes, Bacillus cereus, Vibrio spp., Clostridium perfringens, Enterohe-morrhagic Escherichia coli (EHEC), Yersinia enterocolitica and Campylobacter jejuni/coli were quantitatively or qualitatively assessed. Also, the heavy metals (lead, cadmium，total mercury, and inorganic arsenic), and radioactivity (~(131)I, ~(134)CS+~(137)CS) were quantitatively assessed. This microbial andchemical analysis was performed using standard methods in Korean food code. The total viable bacteria ranged from 4.3xl02 (5.0x10-1.5xl0~3) CFU/g. Coliforms and E. coli were not detected in all samples (ND, <1 log_(10) CFU/g). All nine pathogenic bacteria were qualitatively detected as negative. The contamination levels of lead, cadmium, total mercury, and inorganic arsenic were 0.036 (0.015-0.051), 0.117 (0.088-0.156), 0.030 (0.017-0.048), and 0.058 (0.056-0.064) mg/kg, respectively. Radioactivity wasalso not detected in any sample. The microbial contamination levels determined in the current study may be potentially used as basis for performing microbial risk assessments of dried sea mustards.