A natural antimicrobial agent, comprising ingredients in the following contents: 50%-75% of chitosan, 0.5%-2% of nano titanium dioxide, 0.2%-1% of a dispersion co-solvent and 24%-50% of water. Steps for producing the natural antimicrobial agent include: S1: preparing chitosan: crushing natural shellfish, dissolving and then purifying same, and finally grinding same; S2: preparing nano titanium dioxide: using a hydrolysis method, using tetrabutyl titanate as a raw material and anhydrous alcohol as a solvent, and dissolving tetrabutyl titanate in anhydrous alcohol; and S3: mixing the chitosan in S1 and the nano titanium dioxide in S2, heating and continuously stirring same, dissolving same according to a ratio of 1: 5 after cooling, and adding an appropriate amount of the dispersion co-solvent, so as to prepare a finished product. The natural antimicrobial agent is naturally non-toxic, has good antimicrobial properties, and also has maintenance effects on the human body.
D06M 11/46 - Oxydes ou hydroxydes d'éléments des groupes 4 ou 14 de la classification périodique; Titanates; Zirconates; Stannates; Plombates
B02C 21/00 - Installations de désagrégation avec ou sans séchage des matériaux
B02C 13/13 - Désagrégation par appareils à batteurs rotatifs à axe horizontal, combinés avec des dispositifs de tamisage, p.ex. pour fabriquer du combustible pulvérulent
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