COMSPOSITION FOR STABLIZING EPIGALLOCATECHIN GALLATE (EGCG) IN WATER PHASE AND PREPARATION METHOD THEREOF
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United States of America Patent
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Issued Date -
Aug 9, 2007
app pub date -
Mar 15, 2005
filing date -
Mar 16, 2004
priority date (Note) -
Abandoned
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Abstract
Disclosed herein are a composition for stabilizing Epigallocatechin gallate (EGCG) in water phase comprising 0.1-25.0% by weight of Epigallocatechin gallate, 0.1-5.0% by weight of a cationic polymer, an anionic polymer or a mixture thereof, 0.1-10.0% by weight of antioxidant in a remainder of water or the mixture of water and a hydrophilic solvent and a preparation method thereof. The composition is not easily decomposed in water phase as well as in external envionment consisting of temperature change, light effect etc. because the composition is stabilized by reacting with a cationic polymer or an anionic polymer.
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