| 摘要 |
Provided is a method for manufacturing purified hyaluronic acids. Said method includes: a step for obtaining a suspension by adding a water-soluble organic solvent to a solution that has a pH of at most 3 and contains hyaluronic acids with average molecular weights between 400 and 100,000; and a step for adjusting the pH of the suspension to between 3.5 and 8 and precipitating out purified hyaluronic acids. |
