OPEN ACCESS plSSN : 0374-8111 | elSSN : 2287-8815
OPEN ACCESS plSSN : 0374-8111elSSN : 2287-8815
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kfas, vol. 55, no. 5, pp.662-669, October, 2022

Microbial Contamination Level and Disinfection Effect of Electrolyzed
Water in the Production Process of Dried-Laver Pyropia sp.

조종락1·홍도희2·김영목3·김현중4·김정목1,4*
1목포대학교 수산물안전독성연구소, 2국립수산과학원 식품위생가공과, 3부경대학교 식품공학과, 4목포대학교 식품공학과

  • ABSTRACT

    The purpose of this study is to test the effects of electrolyzed water treatment on dried-laver Pyropia sp. processing facilities to control microbial contamination. Following the progression of the process to the next step, as well as during the lapse between process operating hours, the contamination level of total viable cell counts (TVC) and total coliform (TC) of laver increased. The TVC increased during the aging step, and after the molding-drying steps were completed, it increased by approximately 2.0 log CFU (colony forming unit)/g. Freshwater used for processing in April had a TVC of 4.31 log CFU/mL, which was more polluted than 2.61 log CFU/mL of seawater. Electrolyzed water was used to treat the sponge used in the laver-molding process, which resulted in a 2 log CFU/mL decrease.The TVC of dried-laver decreased by 1 to 2 log CFU/g when electrolyzed water was applied to the process. In conclusion, application of electrolyzed water in dried-laver processing was shown to be effective in reducing the microbiological contamination of the final product.

  • Keyword

    Dried-laver, Electrolyzed water, Sterilization, Total microbial counts, Coliforms