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Abstract

In one embodiment, an antibacterial material includes at least one microparticles selected from tungsten oxide microparticles and tungsten oxide complex microparticles. The microparticles, which have undergone a test to evaluate viable cell count by inoculating in a test piece, to which the microparticles are adhered in a range of 0.02 mg/cm² or more and 40 mg/cm² or less, at least one bacterium selected from among Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, methicillin-resistant Staphylococcus aureus, and enterohemorrhagic Escherichia coli, and storing for 24 hours, have an antibacterial activity value R of 0.1 or more expressed by the following: R=log(B₁/C₁) where, B₁ denotes an average value (number) of viable cell count after storing an untreated test piece for 24 hours, and C₁ denotes an average value (number) of viable cell count after storing the test piece on which the microparticles are coated for 24 hours.

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First Claim