| 摘要 |
PROBLEM TO BE SOLVED: To obtain a silver-based antimicrobial composition capable of retaining silver having an antimicrobial action in high concentration on carrier, having heat resistance and also capable of being suitably utilized as crockery. SOLUTION: This silver-based antimicrobial composition is prepared by making calcium carbonate particles having a particle diameter of 1-50μm bear silver through impregnating the particles into 0.01-10 mol/dm<3> aqueous solution of silver nitrate to make the silver content in silver-borne calcium carbonate particles be 15-50 wt.%. In addition, combined antimicrobial particles are prepared by compounding the silver-borne calcium carbonate particles with inorganic particles having a particle diameter of 1-50μm selected from at least one kind of a group composed of calcium phosphate, zirconium phosphate and calcium silicate, to make the silver content in the silver-borne calcium carbonate particles be 10-40 wt.%.
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