ANTI-INFLUENZA VIRUS AGENT

摘要

Disclosed are an inhibitor of the adsorption of an influenza virus, an inhibitor of the synthesis of viral mRNA in influenza virus-infected cells, an inhibitor of the synthesis of viral vRNA in influenza virus-infected cells, an inhibitor of the synthesis of viral cRNA in influenza virus-infected cells, an anti-hemolytic agent for use in a viral membrane fusion activity test, and an agent for disrupting an envelope of an influenza virus, each of which utilizes a plant extract that is highly safe for use on a daily basis. Specifically disclosed is an anti-influenza virus agent characterized by containing, as an active ingredient, an extract produced by extracting quince with a 50% aqueous ethanol, fractionating the resulting extract on a column, and purifying the fractionated product.