Eriocaulon buergerianum
Eriocaulon buergerianum
Eriocaulon buergerianum Koern. is the botanical source for the Chinese herbal medicine Gu-Jing-Cao. Other Eriocaulon species are also used as the same herb in local areas and are difficult to be differentiated. In order to improve the quality control of Gu-Jing-Cao, chemical constituents of E. buergerianum and adulterating species were analyzed by high-performance liquid chromatography with diode array detection and electrospray ionization tandem mass spectrometry (HPLC-DAD-ESI-MS(n)). The 70% methanol extracts were separated on a Zorbax SB-C(18) column and eluted with acetonitrile-water (each containing 0.1% formic acid). The compounds were identified by ion-trap mass spectrometry in both positive and negative ion modes. From E. buergerianum, E. faberi, E. sexangulare and E. cinereum, a total of 72 compounds were characterized, including 37 flavonols, 6 flavones, 4 isoflavones, 6 xanthones, 14 naphthopyranones, 3 phenolic acids, and 2 other flavonoids. Chemical variation of these four species were studied at three tiers, HPLC fingerprinting, quantitation of six major flavonoids.
Products from Eriocaulon buergerianum
- Cat.No. Product Name CAS Number COA
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BCN6049
Quercetin 117-39-5
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BCN6250
Hispidulin 1447-88-7
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BCN2952
Hispidulin 7-O-neohesperidoside 156186-00-4
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BCN1206
Palmitic acid 57-10-3
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BCN3613
6-Methoxyluteolin 520-11-6
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BCN2529
Jaceosidin 18085-97-7
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BCN2580
Nepetin-7-glucoside 569-90-4
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BCN1684
Rutin 153-18-4
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BCN4537
3,4-Dihydroxybenzoic acid 99-50-3
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BCN6214
3,4-Dihydroxybenzaldehyde 139-85-5
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BCN6105
Vanillic acid 121-34-6
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BCN2605
Vanillin 121-33-5
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BCN2502
Isovanillin 621-59-0
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BCN5948
Ferulic acid 1135-24-6
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BCN5979
Caffeic acid 331-39-5
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BCN5531
Daucosterol 474-58-8
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BCN1015
Beta-Sitosterol 83-46-5
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