Polyol mixture, preservative-free toothpaste containing polyol mixture and preparation method thereof

The invention discloses a polyol mixture. The polyol mixture is prepared from sorbitol, glycerin and xylitol as raw materials according to a certain ratio. The invention also discloses preservative-free toothpaste containing the polyol mixture. The preservative-free toothpaste comprises, by weight, 50-80 parts of the polyol mixture, 10-40 parts of a friction agent, 5-10 parts of a dispersing agent, 0.5-2 parts of a thickener, 0.5-3 parts of a surfactant, 0.5-2 parts of essence and the balance of water. The invention also discloses a preparation method of the preservative-free toothpaste containing the polyol mixture. The polyol mixture has excellent ability to inhibit the growth of microorganisms. Through use of the polyol mixture in the toothpaste, the preservative-free toothpaste is obtained and the safety and economy of the toothpaste are improved. The raw materials are easy to acquire so that the production cost of toothpaste is reduced. 本发明公开了种多元醇混合物，所述多元醇混合物是以山梨醇、甘油以及木糖醇为原料，并按照定比例混合而得到的。本发明还公开了种含有多元醇混合物