Anti-avian influenza virus agent, and product containing anti-avian influenza virus agent
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United States of America Patent
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Dec 10, 2013
Grant Date -
Aug 11, 2011
app pub date -
Oct 8, 2009
filing date -
Oct 8, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
An anti-avian influenza virus agent containing, as an active ingredient, a component obtained when a guava extract extracted from a guava with an extraction solvent consisting primarily of at least one of water and a hydrophilic organic solvent is subjected to fractionation by HPLC under specific conditions. The specific conditions include the use of an ODS column, the use of a water-methanol mixture having a methanol concentration of 20% as a mobile phase during a period until 15 minutes after applying the guava extract to the column, and the use of a water-methanol mixture having a methanol concentration of 40% as a mobile phase during a subsequent period of 15 to 30 minutes. Alternatively, the specific conditions further include the use of a water-methanol mixture having a methanol concentration of 60% as a mobile phase during a period of 30 to 45 minutes after applying the guava extract to the column. The component contained in the anti-avian influenza virus agent is eluted from the column in a period until 20 minutes after applying the guava extract to the column or in a subsequent period of 20 to 35 minutes.
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