Division of Biomedical Engineering, Research Institute, National Defense Medical College.
Department of Oral and Maxillofacial Surgery, National Defense Medical College Hospital.
Biocontrol Sci. 2021;26(1):27-35. doi: 10.4265/bio.26.27.
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.
贝壳氧化钙（BiSCaO）来源于扇贝，经过热处理后具有广泛的杀菌活性。贝壳氧化钙水是通过将 BiSCaO 粉末加入水中后收集水层而制备的消毒剂，它无色透明，pH 值为 12.8。我们比较了市售的贝壳氧化钙水、乙醇、次氯酸钠、次氯酸和过氧化氢溶液作为消毒剂的实用性，以实现手术口罩和 N95 口罩的重复使用。使用污染有正常细菌菌群的手术口罩和 N95 口罩评估了每种消毒剂的杀菌效果。结果表明，贝壳氧化钙水对污染的聚丙烯口罩具有极好的消毒活性，对非织造布口罩的结构几乎没有不良影响。
