| 摘要 |
PROBLEM TO BE SOLVED: To obtain an antioxidant which can be applied to a variety of fields including food products, medicines, quasi drugs, cosmetics and the like, as it has excellent antioxidant effect originating from natural products with high safety by formulating an extract from a plant in Coleus with a solvent. SOLUTION: The above-ground part, stems, leaves, flowers and the like, of a plant in Coleus, for example, Coleus forskohlii, are used, as they are raw, or after being dried, freeze-dried, cut in pieces, and extracted with an organic solvent, for example, an alcohol such as methanol, ethanol or butanol, acetone, ethyl acetate or a halogen containing organic solvent such as chloroform, dichloro-methane or water by dipping the plant previously crushed in pieces in the solvent. The extract is separated from the residue by filtration or centrifugation, concentrated under reduced pressure to prepare the essence or extract of the plant. This extract is formulated to obtain the objective antioxidant which can prevent food products, medicines, quasi drugs, cosmetics and the like from being deteriorated by their oxidation. |
