Patent ID: 7691418

Claim:
An oral health product for preventing and/or inhibiting the formation of a biofilm in an oral cavity, dental plaque and/or dental tartar, said oral health product comprising a non bactericidal concentration of an apolar extract fraction of Rheum palmatum , wherein said apolar extract fraction is obtained by a method comprising: a) obtaining dried, subterrestrial plant parts of Rheum palmatum, b) contacting said dried subterrestrial plant parts with a methanol/water solution and a chloroform solution, thereby obtaining a methanol/water fraction and a chloroform fraction, whereby said chloroform fraction is separated, c) drying said chloroform fraction, d) contacting the dried chloroform fraction of step c) with a methanol/water solution and a petroleum ether (PE) solution, thereby obtaining a methanol/water fraction and a PE fraction, whereby said PE fraction is separated, and e) drying the PE fraction of step, wherein the dried PE fraction is said apolar extract fraction.