Stable alkaline labiatae antioxidant extracts

C - Chemistry – Metallurgy – 09 – K

Patent

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117/70, 31/72, 4

C09K 15/34 (2006.01) A23L 3/3472 (2006.01) B05D 7/22 (2006.01) C08L 63/00 (2006.01)

Patent

CA 2023590

ABSTRACT OF THE DISCLOSURE A process of preparing an alkaline solution of Labiatae antioxidants essentially free of lipids by agitating a solvent extract of the herb with an aqueous alkaline lower-aliphatic alcoholic or polyol solution thereof, separating the aqueous phase from the insolu- ble phase, and removing the alcohol from the aqueous phase by distillation to give a stable product with an antioxidant strength of 0.2 or more, having a pH above about 8.4, and having less than 75% water, preferably in the presence of a water-immiscible solvent, and a stable aqueous antioxidant solution of a Labiatae extract, consisting essentially of essentially all of the antioxidant substances present in the herb, which is preferably rosemary, sage, or thyme, with an anti- oxidant strength of 0.2 or more, and less than about 75% water, preferably having a pH between about 8.4 and about 11.8, and therefore useful for a wide variety of antioxidant purposes, including use in can liners and aqueous alkaline epoxy emulsions for preparing the same, are disclosed. KSECO 19/dlk

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