Active oxygen scavenger
AssigneeSoken, Inc.
InventorsYoshie Tokuyama, Hiroshi Suzuki, Yoshihisa Matsuo, Eiko Takeuchi
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Abstract
The present invention relates to an active oxygen scavenger which has been found to be contained in a water or organic solvent extract of rice. This active oxygen scavenger may be used as a medicament, beauty treatment, preservative or antibiotic.
Claims17
A method of preparing an extract of rice which is effective as a scavenger of active oxygen, which comprises:
- adding water to rice in the amount of from 2 to 5 times by volume the amount of the rice;
- pretreating the water and rice mixture with an acid or an alkali;
- allowing the mixture to stand at a temperature not higher than 40.degree. C.;
- compressing the resultant mixture;
- and
- recovering the liquid obtained.
A method of preparing an extract of rice which is effective as a scavenger of active oxygen, which comprises:
- adding water in an amount of from 2 to 5 times by volume the amount of the rice;
- pretreating the water and rice mixture with amylase;
- heating the mixture to a temperature of about 40.degree. C. to its boiling point;
- compressing the resultant mixture;
- and
- recovering the liquid obtained.
A method of preparing an extract of rice which is effective as a scavenger of active oxygen, which comprises subjecting rice to an extraction with an organic solvent, allowing the mixture to stand at room temperature for about 4 days, compressing the resultant mixture and recovering the liquid obtained.
Dependencies are inferred from the claim text.