Patent ID: 8007771

Claim:
An oral care composition comprising: a. stannous ions in an amount of about 1000 ppm or greater than 1000 ppm; b. a flavor system to provide a mint-dominant flavor comprising (i) a mint oil which has been found to contain dimethyl sulfoxide (DMSO) at levels sufficient to react with stannous ions to form mercaptans and dimethyl sulfide that cause malodor and (ii) a protectant component selected from copper salts, ascorbic acid, cis-jasmone, 2,5-dimethyl-4-hydroxy-3(2H)-furanone, 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone, anisaldehyde, 3,4-methylenedioxybenzaldehyde, 3,4-dimethoxybenzaldehyde, 4-hydroxybenzaldehyde, 2-methoxybenzaldehyde, benzaldehyde, cinnamaldehyde; hexyl cinnamaldehyde, α-methyl cinnamaldehyde, ortho-methoxy cinnamaldehyde, α-amyl cinnamaldehyde and mixtures thereof; and c. orally acceptable carriers; wherein the ratio of protectant component to mint oil is from about 1:1 to about 1:200 by weight when the protectant is other than the cinnamaldehyde compounds and from about 1:2 to about 1:16 by weight when the protectant is any of the cinnamaldehyde compounds, sufficient to reduce the level of mercaptans and dimethyl sulfide and malodor therefrom.