잠시만 기다려 주세요. 로딩중입니다.

광유도 ROS 발생장치의 세척용수 중 식중독 세균에 대한 불활성화 효과

Effect of Light-Induced ROS Generation Unit on Inactivation of Foodborne Pathogenic Bacteria in Water

한국식품위생안전성학회지 2019년 34권 6호 p.583 ~ 590
최재혁 ( Choi Jae-Hyuk ) - 국립농업과학원 농산물안전성부 유해생물팀

김다운 ( Kim Da-Woon ) - 국립농업과학원 농산물안전성부 유해생물팀
정규석 ( Jung Gyu-Suck ) - 경기도농업기술원 소득자원연구소
노은정 ( Roh Eun-Jung ) - 국립농업과학원 농산물안전성부 유해생물팀
류경열 ( Ryu Kyoung-Yul ) - 국립농업과학원 농산물안전성부 유해생물팀
류재기 ( Rhu Jae-Gee ) - 국립농업과학원 농산물안전성부 유해생물팀

Abstract


As the consumption of fresh fruits and vegetables increases, food poisoning caused by foodborne pathogen contamination is not decreasing. To prevent the contamination of produce, a quick and easy, low-cost, environmentally-safe disinfection method that does not affect produce freshness or quality is needed. This study demonstrates a new-concept, circulating-water disinfection system that purifies water by using newly developed ‘LED-PS (photosensitizer)-induced ROS generation unit’. Using various types of LED-PS induced ROS generation units, we investigated the conditions for reducing the density of various pathogenic bacteria by more than 3 log CFU / mL in 1 hour. The major operational factors affecting the density reduction of the LED-PS-induced ROS generation unit were analyzed. Depending on bacteria species, the density reduction rate was varied. The effect of the units on reducing the density of Bacillus cereus and Pectobacterium carotovorum subsp. carotovorum was high, but the effect on foodborne bacteria such as Escherichia coli was relatively low. In this circulating water disinfection system, the density reduction effect tended to increase as the flow rate increased and the initial bacterial density decreased. As the amount of PS absorbed beads increased, the density reduction effect increased exponentially in some bacteria. Model 3280, a double cylindrical unit connecting two single cylindrical units, could completely sterilize more than 3 log CFU/mL of B.cereus and P. carotovorum subsp. carotovorum in 30 minutes of LED irradiation.

키워드

Reactive oxygen species; Foodborne pathogens; Photosensitizer; Disinfection; Light induced ROS generator
원문 및 링크아웃 정보
등재저널 정보