Patent ID: 11958977
Assignee: SUZHOU BAIYUAN GENT CO., LTD.
Field: Measurement (Instruments)
Classification: CPC C  G | IPC C  G

Claim 12:
13. A method of preparing the fluorescently labeled polysaccharide according to claim 1, comprising the steps of:
(1) dissolving the polysaccharide in water, and then adding a saturated cyanogen bromide solution for reaction for 3-20 minutes, and purifying the solution obtained after the reaction;
(2) concentrating the purified solution obtained in the step (1) to dry, dissolving in 0.1-0.3 M borax solution, and then adding a fluorescent dye represented by the formula I for reaction in the dark to obtain the fluorescently labeled polysaccharide.