Process for increased flavor impact in oral care products

Abstract

The method of manufacturing comprises the steps of: (a) preparing a mixture of a favor system, one or more humectants, and one or more aqueous carrier materials; (b) adding tetrasodium pyrophosphate and calcium peroxide, all at once or in portions, under conditions wherein less than about 20% of the total pyrophosphate and calcium peroxide are dissolved in the mixture; and wherein further any remaining aqueous carrier materials not added to the mixture during step (a) are added in whole or in part in step (b) or thereafter, either by themselves or with any remaining amount of the tetrasodium pyrophosphate or calcium peroxide, under conditions such that less than about 20% of the total pyrophosphate and calcium peroxide are dissolved in the mixture; (c) heating the mixture to a temperature range of from about 38.degree. C. (100.degree. F.) to about 71.degree. C. (160.degree. F.) and preferably to a temperature range of from about 52.degree. C. (125.degree. F.) to about 57.degree. C. (135.degree. F.), and (d) homogenizing the mixture in the temperature range for about 15 minutes to about 60 minutes. The tetrasodium pyrophosphate salt and peroxide are two of the last components to be added to the mixture, preferably after all or much of the other sodium-containing salts present in the composition have been added to the process mixture. By these methods, the dissolved tetrasodium pyrophosphate salt is less likely to recrystalize in the form of glass-like crystal particles of tetrasodium pyrophosphate decahydrate.