PART 1
(1) Determination of Total flavonoids in FXH by UV method
Objective: To establish a UV method for the assay of Total flavonoids in FXH.
Method: Total flavonoids were determined by UV-spectrophotometry and the detective wavelength was set at 512nm. The chemical reference substance was rutin. The extract solvent was 95%EtOH.
Result: The linearity was in the range of 0.0901-0.0451 mg, r=0.9998(n=5). The average recovery and relative standard devition respecti...