• Title/Summary/Keyword: Lumitester

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Quality Assessment of Traditional wine and viable cell count by Lumitester (민속주의 품질평가와 Lumitester를 이용한 생균수 측정)

  • 류충호;김태완
    • Journal of Life Science
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    • v.12 no.3
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    • pp.363-368
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    • 2002
  • To evaluate the quality of korean traditional wine, 31 different type of wine were selected and examined for the following properties; ethanol contents, pH, acidity, total sugar contents, reducing sugar contents. In addition ATP contents of traditional wines were measured using lumitester and the result were compared with these obtained by viable cell counts. The physical and chemical properties of traditional wines are summarized as follow.; pH were in the range of 3.59~4.76, Total acidities were in the range of 4.23~16.21, Total sugar and reducing sugar contents were in the range of 0.04~1.13 g/100 mL and 0.006~0.999g/100 mL, respectively, ATP contents were in the range of 10$^1$~ 10$^{6}$ RLU(Relative light unit).

A Study on Microbial Contamination and Disinfection of Ultrasonic Probe in Metropolitan Area (수도권 지역의 초음파 프로브의 미생물 오염도와 소독에 관한 연구)

  • Lee, Hyun Kyung;Kim, Sam Soo;Heo, Yeong Cheol;Han, Dong Kyoon
    • Journal of radiological science and technology
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    • v.41 no.5
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    • pp.427-435
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    • 2018
  • There was a shortage of research reports on sterilization criterion and contamination of ultrasonic probes. Therefore, in this study, we were going to provide a basic study to measure the level of microbial contamination in ultrasonic probes and to investigate the radiographer's awareness of infection. After the scan, samples were collected from the rubber part of the probe by opening a sterile swab (Transport Medium AM608-1S) for medical bacteria collection with the remaining gel removed with a paper towel. Also, the collected samples of bacteria were grown for seven days and then the laboratory was analyzed. Among the total 29 types of microorganisms, Micrococcus luteus 21(26%), Moraxella species 16(20%), Coagulase negative staphylococcus 8(10%), Bacillus species 5(7%), Bicillus circulans 3(5%), Acinetobacter lwoffii 2(2%), and 1 other Candida parapsilosis (1%) a number of bacteria and fungus, was detected. In a disinfectant experiment using LuciPac Pen on the Lumitester PD-30s, we cultured the rubber part of the probe two to three times to measure the bacteria. Bacteria decreased to 97% with Aquanax (alkaline reduced water 100%), 99% with Klarion wash (0.01% sodium hydroxide), 94% with Klarion disinfection (0.01% nitrous acid water), Sterilization was best with Klarion wash (0.01% sodium hydroxide). Therefore, guidelines for cleaning and disinfection of ultrasonic probes was required, and further development of probe-only disinfectants is required.