Changes in microbial composition and the prevalence of foodborne pathogens in crab marinated in soy sauce produced by six manufacturing plants

Sun Ae Kim, Eun Sook Choi, Nam Hee Kim, Hye Won Kim, Na Young Lee, Tae Jin Cho, Jun Il Jo, Soon Han Kim, Soon Ho Lee, Sang Do Ha, Min-Suk Rhee

Research output: Contribution to journalArticle

Abstract

BACKGROUND: The present study examined the changes in microbiological composition during the production process of crab marinated in soy sauce, potential microbial hazards, potential contamination routes and effective critical control points. Crab and soy sauce samples were obtained from six different manufacturing plants at different stages, and their microbiological content was comprehensively assessed by quantitative and qualitative analyses. RESULTS: The results revealed the following: (1) the final products contained 4.0 log colony-forming units (CFU) g−1 aerobic plate counts (APCs) and 1.1 log CFU g−1 coliforms, which may have been introduced from the raw materials (the level of APCs in raw crab and soy sauce mixed with other ingredients was 3.8 log CFU g−1 and 4.0 log CFU mL−1 respectively); (2) marination of crab in soy sauce may allow cross-contamination by coliforms; (3) only Bacillus cereus and Staphylococcus aureus were qualitatively detected in samples at different stages of manufacture (detection rate of 28 and 5.6% respectively), and these bacteria may impact the microbiological quality and safety of crab marinated in soy sauce; and (4) bacterial counts were either maintained or increased during the manufacturing process (suggesting that no particular step can be targeted to reduce bacterial counts). CONCLUSION: Proper management of raw materials and the marination process are effective critical control points, and alternative interventions may be needed to control bacterial quantity. The results provide important basic information about the production of crab marinated in soy sauce and may facilitate effective implementation of sanitary management practices in related industries and research fields.

Original languageEnglish
Pages (from-to)1761-1767
Number of pages7
JournalJournal of the Science of Food and Agriculture
Volume97
Issue number6
DOIs
Publication statusPublished - 2017 Apr 1

Keywords

  • bacterial hazard
  • crab marinated in soy sauce
  • critical control point
  • manufacturing plant
  • microbiological analysis

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Agronomy and Crop Science
  • Nutrition and Dietetics

Fingerprint Dive into the research topics of 'Changes in microbial composition and the prevalence of foodborne pathogens in crab marinated in soy sauce produced by six manufacturing plants'. Together they form a unique fingerprint.

  • Cite this