abstract |
(57) Abstract: A purification method for easily obtaining high-purity sodium hyaluronate having a low content of pyrogenic substances, and sodium hyaluronate obtained by the purification method are provided. SOLUTION: A salt and a water-soluble organic solvent are added to a sodium hyaluronate solution containing sodium hyaluronate, or a solution obtained by passing the solution through a positively charged filter to precipitate and precipitate sodium hyaluronate, and a supernatant is obtained. Disclosed is a method for purifying sodium hyaluronate, which comprises removing a pyrogen by extracting a liquid, and sodium hyaluronate obtained by the purification method. |