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Antimicrobial Activity of Electrolyzed Alkaline Water against Spoilage of Microorganisms in Rice Warehouses

미곡창고 오염균주에 대한 전해알칼리수의 항균효과

  • Kim, Jin-Hee (Faculty of Food Science & Biotechnology / Institute of Food Science, Pukyong National University) ;
  • Lee, So-Young (Faculty of Food Science & Biotechnology / Institute of Food Science, Pukyong National University) ;
  • Kim, Kotch-Bong-Woo-Ri (Faculty of Food Science & Biotechnology / Institute of Food Science, Pukyong National University) ;
  • Song, Eu-Jin (Faculty of Food Science & Biotechnology / Institute of Food Science, Pukyong National University) ;
  • Kim, Ah-Ram (Faculty of Food Science & Biotechnology / Institute of Food Science, Pukyong National University) ;
  • Park, Sun-Mee (Faculty of Food Science & Biotechnology / Institute of Food Science, Pukyong National University) ;
  • Han, Chung-Soo (Dept. of Biosystems Engineering, Chungbuk National University) ;
  • Ahn, Dong-Hyun (Faculty of Food Science & Biotechnology / Institute of Food Science, Pukyong National University)
  • 김진희 (부경대학교 식품생명공학부/식품연구소) ;
  • 이소영 (부경대학교 식품생명공학부/식품연구소) ;
  • 김꽃봉우리 (부경대학교 식품생명공학부/식품연구소) ;
  • 송유진 (부경대학교 식품생명공학부/식품연구소) ;
  • 김아람 (부경대학교 식품생명공학부/식품연구소) ;
  • 박선미 (부경대학교 식품생명공학부/식품연구소) ;
  • 한충수 (충북대학교 바이오시스템공학과) ;
  • 안동현 (부경대학교 식품생명공학부/식품연구소)
  • Published : 2007.01.31

Abstract

We examined the antimicrobial activity of electrolyzed alkaline water against spoilage microorganisms in rice warehouses. Dominant microbial species were isolated from paddy, dust and air samples of three different warehouses located in Gyeongnam. We used electrolyzed alkaline water (EW) manufactured over various treatment times. The acidities (pH) of EW treated for 30 sec, 1, 2, 3, and 4 min were 8.89, 8.91, 9.20, 9.35, and 9.22, respectively. HClO contents were 150.7, 314.2, 191.8, 104.1, and 255.3 ppm, respectively. EW inhibited bacteria, yeasts, and molds; also, it inhibited three yeast species strongly. The antimicrobial effects of EW increased as pH values and HClO contents increased. EW obtained after 30 sec treatment retained the antimicrobial activities after 14 days whereas EW obtained after 1 and 2 min treatments retained the antimicrobial activities after 21 and 24 days, respectively.

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