Oral care compositions derived from the Labiatae family
AssigneeA.M. Todd Company
InventorsIgor Mezine, Huizhen Zhang, Mike Petteruti, Mary Opet, John Finley
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Abstract
The invention relates to water dispersible extract preparations derived from water soluble components of Labiatae family plant material, including plant material hay and previously extracted or spent hay, which possesses beneficial oral care properties, methods of their manufacturing and application of the preparations in oral care products.
Claims31
A water dispersible extract preparation of Labiatae family plant material comprising a polysaccharide component, a polyphenol component, and, optionally, a rosmarinic acid component.
A process of manufacturing a water dispersable Labiatae plant material extract preparation comprising
- a. contacting Labiatae plant material with water-organic mixtures:
- i. wherein a water-miscible organic solvent is selected from C1-C4 alcohols, acetone, and/or their combination,
- ii. wherein the pH of the water and/or water/organic solvent mixture is kept in the range 1-14 by means of appropriate base, acid, salt or buffer,
- iii. wherein the ratio of water to organic solvents is in a range from 100:0 to 1:99,
- iv. wherein the extraction is carried out at temperatures in a range from 60° C. to at boiling point;
- v. wherein the extraction may include microwave assisted water extractions and/or subcritical extraction with water, including high temperature and high pressure;
- b. removing the extract from insoluble material;
- c. optionally repeating the extraction step using the same or different water-organic mixture;
- d. optional fractionation of the extracted material by means of precipitation
- i. wherein precipitation is achieved by increasing the content of the organic solvent chosen from C1-C4 alcohols, acetone, and/or their combination,
- ii. wherein precipitation is achieved by decreasing pH,
- iii. wherein precipitation is achieved through complexation with multicharged cations,
- iv. wherein precipitation is achieved by increasing ionic strength of the solution, and/or
- v. wherein precipitation is further aided by decreasing the temperature;
- e. optional purification of the extracts by means of liquid—liquid extraction, solid-phase extraction, chromatographic methods, membrane-based filtration or combinations of thereof;
- and
- f. stabilizing the obtained preparations by means of addition of anti-spoiling agents, or preferably by vacuum drying, or spray drying methods using appropriate carriers.
Dependencies are inferred from the claim text.