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OBJECTIVE To study the relationship between the spectral effect and the antibacterial effect of Rhizoma macrophylla L. based on grey correlation degree method and partial least square method. METHODS HPLC was used to establish the fingerprint of 13 batches of Moghania macrophylla (Willd.) Kuntze. The antibacterial activity of Moghania macrophylla (Willd.) Kuntze against 4 common pathogenic bacteria (Staphylococcus epidermidis, Escherichia coli, Staphylococcus aureus and Bacillus subtilis) was determined by microdilution method. Using the Similarity Evaluation System of Fingerprint of Traditional Chinese Medicine (TCM), the characteristic maps of 13 batches of Moghania macrophylla (Willd.) Kuntze were established, and the similarity evaluation and characteristic peak identification were carried out. The relative inhibition rate was used as the index of antibacterial activity, and the spectral effect relationship was established by using grey correlation analysis and partial least square method. RESULTS There were 29 common peaks in the fingerprints of 13 batches of samples, and the similarity was no less than 0.906. Peaks 12, 16, 17, 19 and 20 were identified as genistein, ononin, daidzein, genistein and chickpeas A. Staphylococcus epidermidis, Escherichia coli and Staphylococcus aureus had good bacteriostatic effect on 4 kinds of pathogenic bacteria. The results of spectral effect relationship analysis showed that peak 16 (ononin), peak 20 (chickpea A), peak 21 and peak 25 were the main active components of the antibacterial activity. CONCLUSION Through the study of the spectrum effect relationship, it is confirmed that the antibacterial effect of Moghania macrophylla (Willd.) Kuntze is the result of the combined action of many components, which could provide reference for the basic research and quality control of pharmacodynamic substances of Moghania macrophylla (Willd.) Kuntze.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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