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Efficacy of Bioshell Calcium Oxide Water as Disinfectants to Enable Face Mask Reuse.
Hiruma, Sumiyo; Hata, Yuuki; Ishihara, Masayuki; Takayama, Tomohiro; Nakamura, Shingo; Ando, Naoko; Fukuda, Koichi; Sato, Yoko; Murakami, Kaoru; Yokoe, Hidetaka.
  • Hiruma S; Division of Biomedical Engineering, Research Institute, National Defense Medical College.
  • Hata Y; Division of Biomedical Engineering, Research Institute, National Defense Medical College.
  • Ishihara M; Division of Biomedical Engineering, Research Institute, National Defense Medical College.
  • Takayama T; Department of Oral and Maxillofacial Surgery, National Defense Medical College Hospital.
  • Nakamura S; Division of Biomedical Engineering, Research Institute, National Defense Medical College.
  • Ando N; Division of Biomedical Engineering, Research Institute, National Defense Medical College.
  • Fukuda K; Division of Biomedical Engineering, Research Institute, National Defense Medical College.
  • Sato Y; Division of Statistical Analysis, Research Support Center, Shizuoka General Hospital.
  • Murakami K; Department of Oral and Maxillofacial Surgery, National Defense Medical College Hospital.
  • Yokoe H; Department of Oral and Maxillofacial Surgery, National Defense Medical College Hospital.
Biocontrol Sci ; 26(1): 27-35, 2021.
Article in English | MEDLINE | ID: covidwho-1135023
ABSTRACT
Bioshell calcium oxide (BiSCaO) is derived from scallop shells and after heat treatment exhibits broad microbicidal activity. BiSCaO Water is a disinfectant prepared by collecting the aqueous layer after adding BiSCaO powder to water, is colorless and transparent, and has a pH of 12.8. We compared the utility of commercially available BiSCaO Water, ethanol, sodium hypochlorite, hypochlorous acid and hydrogen peroxide solutions as sterilization agents to enable the reuse of surgical and N95 face masks. The microbicidal efficacy of each disinfectant was evaluated using pieces of surgical and N95 face masks contaminated with normal bacterial flora. The results suggest that BiSCaO Water has excellent disinfection activity toward contaminated polypropylene masks and has minimal adverse effect on the structure of non-woven masks.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Disinfectants Type of study: Experimental Studies Language: English Journal: Biocontrol Sci Year: 2021 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Disinfectants Type of study: Experimental Studies Language: English Journal: Biocontrol Sci Year: 2021 Document Type: Article