図書の微生物汚染

野村 早希, 鵜島 明良, 舟木 良介, 尾家 重治

doi:10.4286/jjmi.93.685

図書の微生物汚染

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野村早希

山陽小野田市立　山口東京理科大学　薬学部　薬学科
鵜島明良

山陽小野田市立　山口東京理科大学　薬学部　薬学科
舟木良介

山陽小野田市立　山口東京理科大学　薬学部　薬学科
尾家重治

山陽小野田市立　山口東京理科大学　薬学部　薬学科

書誌事項

タイトル別名

Microbial contamination of books in the library
トショノビセイブツオセン

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説明

<p>We investigated the state of contamination by microorganisms in 173 library books and found the surfaces of the books to have contaminants ranging from <12 to 4.9 x 10 ⁴ colony-forming units (cfu)/ cover. We found 81.5% of the books tested to have the range of contaminant load counting 0 to 960 cfu/cover; the mean number of contaminant ± standard deviation was 1,261 ± 4,482 cfu/cover. The main contaminants included some environmental bacteria, such as Bacillus atrophaeus and Bacillus cereus, and a skin microbial flora consisting of coagulase (-) staphylococci and Micrococcus spp. On the other hand, methicillin-sensitive Staphylococcus aureus was detected in 4 (2.3%) of the 173 books, and the numbers ranged from 12 to 420 cfu/cover. We did not detect any coliform bacteria or Pseudomonas aeruginosa on the books that were sampled. We found the library books investigated in this study relatively clean.</p>