Korean Journal of Food Science and Technology (한국식품과학회지)
- Volume 31 Issue 4
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- Pages.1029-1034
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- 1999
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- 0367-6293(pISSN)
Microbiological Cleaning Effect of Electrolyzed Acid Water by Containing Polysorbates
Polysorbates를 첨가한 전해산화수의 미생물학적 세정효과
- Jeong, Jin-Woong (Korea Food Research Institute) ;
- Park, Kee-Jai (Korea Food Research Institute) ;
- Jung, Sung-Won (Korea Food Research Institute)
- Published : 1999.08.31
Abstract
To enhance the cleaning and sterilization effect of cooled electrolyzed acid water on lettuce, several kinds of polysorbates were used at various concentrations in immersion washing process. In case of the treatment containing polysorbate 20, coliform count of lettuce was reduced to about 1/40 level of that in non-treated lettuce. The treatment containing polysorbate 60 did not show a significant sterilization effect. Otherwise, the total and coliform counts of lettuce during immersion in electrolyzed acid water containing 1 ppm of polysorbate 80 was reduced to about 1/300 and 1/1,700 level of those in non-treated one. And, the changes of ORP(oxidation-reduction potential), pH and color value of lettuce in electrolyzed acid water containing 1 ppm of polysorbate 80 were not quite different during 60 min. immersion, but HCIO content decreased from 10.28 ppm to 8.51 ppm after 20 min. immersion. Also, total and coliform count of lettuce immersed in electrolyzed acid water containing 1 ppm of polysorbate 80 was lower to about 1/1,800 after 20 min. and 1/5,550 after 30 min, compared with non-treated lettuce.
본 연구에서는 전해산화수의 세정 및 살균력 상승효과를 높이기 위하여 계면활성제중 친수성을 지닌 비이온계 계면활성제로서 polysorbate 20, 60 및 80을 농도별(10 ppb, 100ppb, 1 ppm, 10 ppm 및 100 ppm)로 시료중량 50배의 전해산화수에 10분간 침지한 처리구와 전해산화수 만을 사용한 처리구에 있어 총균수와 대장균군수를 비교 검토한 결과, polysorbate 20을 10 ppm첨가한 처리구는 무첨가 처리구에 비하여 총균수는 1/250 수준, 대장균군수는 약 1/4 수준으로 감소되며, polysorbate 60을 10 ppm 첨가한 처리구에서는 총균수가 1/20 수준, 대장균군수는 약 1/6 수준으로 감소되므로써 그다지 효과가 없었다. 반면에 polysorbate 80을 1 ppm 첨가한 처리구에 있어 총균수는