Objective:

2

To establish an HPLC fingerprint of Menthae Haplocalycis Herba standard decoction

in order to identify the main chemical component of common peaks

and determine the content of rosmarinic acid.

Method:

2

The chromatographic fingerprints of 10 batches of Menthae Haplocalycis Herba standard decoction from different areas were determined

and the chromatographic separation was carried out on Kromasil C

18

(4.6 mm×250 mm

5 μm) at the temperature of 30℃. The mobile phase was acetonitrile and 0.1%formic acid solution for gradient elution

with a flow rate of 1 mL·min

-1

and the detection wavelength was 330 nm. The 10 batches of fingerprints were imported into Similarity Evaluation System for Chromatographic Fingerprint of TCM (2012.130723) for chromatographic peak matching

the reference fingerprint was established with the average method

and the similarities of 10 batches were evaluated.

Result:

2

The HPLC fingerprint of Menthae Haplocalycis Herba showed 13 common peaks. The similarities of 10 batches from different areas were all more than 0.90.At the same time

9 common peaks of the fingerprint were identified by using Q-TOF-MS spectrometry. Rosmarinic acid content was also determined by using the HPLC fingerprint method.

Conclusion:

2

The method is simple

rapid and accurate

with a good reproducibility

and can be used to rapidly and effectively evaluate the quality of Menthae Haplocalycis Herba standard decoction and lay a foundation for the quality control of Menthae Haplocalycis Herba formula granules.