Back to results
US 8,282,946 B2Granted
Water-soluble ginger root extract
AssigneeKao Corporation
InventorsYusuke Shibuya, Shigeru Moriwaki, Naoko Tsuji
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeKao Corporation
InventorsYusuke Shibuya, Shigeru Moriwaki, Naoko Tsuji
Estimating the term…
Provided are a water-soluble ginger root extract which is a water extract or a hydrous alcohol extract of a ginger root and is substantially free of gingerols; and a hair growth inhibitor and a preparation for external use each containing the extract. The water-soluble ginger root extract of the present invention causes less skin irritation because of being substantially free of gingerols, and has excellent body-hair growth inhibiting effects, so that it is useful as a hair grown inhibitor and a preparation for external use, each having a high degree of safety.
A method of inhibiting hair growth comprising contacting the area for which hair growth inhibition is desired in a subject in need thereof with an external preparation comprising a water-soluble ginger root extract which comprises a water extract or a hydrous alcohol extract of a ginger root and which is substantially free of gingerols, wherein said hydrous alcohol extract of a ginger root has a maximum alcohol content of 70% v/v.
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Zingiberaceae: zingiber, e.g. garden ginger
Angiosperms [Magnoliophyta]: liliopsida [monocotyledons]
Drugs for dermatological disorders
Drugs for dermatological disorders: for baldness or alopecia
About 9 months of term left · ends 13 Jul 2027 (estimated)
1. Field of the Invention
The present invention relates to a water-soluble ginger root extract substantially free of gingerols.
2. Description of the related art
FIG. 1 illustrates the results of componential analysis by HPLC (A: water-soluble ginger root extract (Example 1), B: ginger root extract (Comparative Example).
The term “ginger root” as used herein means a root of Zingiber officinale Roscoe belonging to the Zingiberaceae plant family.
The term “substantially free of gingerols” means that the extract does not substantially contain gingerols such as 1-gingerol, 6-gingerol, 8-gingerol and 10-gingerol and in particular, the amount of 6-gingerol is not greater than 0.5 ppm, preferably not greater than a detection limit in HPLC analysis under the below-described conditions.
<HPLC Analysis Conditions>