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[Simultaneous determination of five lignans in Schisandra chinensis by HPLC]
Objective:
To develop a HPLC quantitative method for determination of schisandrin, schisandrol B, schisantherin A, deoxyschisandrin and gamma-schisandrin in Fructus Schisandrae.
Method:
A symmetry C18 column (4.6 mm x 250 mm, 5 microm) was used with methanol (A) and water (B) as mobile phases, in gradient elution. The gradient program was as follows: 0-36 min, changed from 60% A to 66% A, 36-65 min, to 80% A, 65-70 min, kept for 80% A, 70-75 min, to 100% A. The flow rate was 0.5 mL x min(-1) and detection wavelength was set at 254 nm.
Result:
The linearities of schisandrin, schisandrol B, schisantherin A, deoxyschisandrin and gamma-schisandrin were in the ranges of 0.0214. 160 (r = 0.9999), 0.020-4.000 (r = 0.9999), 0.021-4.240 (r = 0.9999), 0.020-3.960 (r = 0.9999) and 0.021-4.200 (r = 0.9999). The average recoveries were 104.8%, 104.2%, 102.7%, 104.6%, 104.5%, respectively.
Conclusion:
The method developed in this study was reliable, and can be used for the quality control of the fruits of S. chinensis.
