Low molecular weight hyaluronic acid and/or salt thereof, and cosmetic preparation, pharmaceutical composition, and food composition each using same
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United States of America Patent
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Feb 5, 2013
Grant Date -
Dec 17, 2009
app pub date -
Feb 21, 2007
filing date -
Feb 24, 2006
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Abstract
A low-molecular-weight hyaluronic acid and/or its salt has an average molecular weight of 5000 to 20,000, and has a molecular weight distribution in which the proportion of components having a molecular weight of 10,000 or less is 40 wt % or more and the proportion of components having a molecular weight of 50,000 or more is 5 wt % or less.
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