| 摘要 |
<p>A process for producing water-soluble kraft lignin by refining and carboxymethylating kraft lignin obtained from wood, whereby it is possible to obtain a water-soluble lignin that has a potent antiviral activity even at a low concentration, is orally administrable, and has a low molecular weight and both anti-AIDS virus and immunopotentiating effects from isolated kraft lignin that is available readily at a low cost in a large quantity.</p> |
