General glycoside extractive of xanthium and preparation method
An extract and technology of Xanthium, which is applied in the field of total glycosides extract and its preparation of traditional Chinese medicine Xanthium, can solve the problem of the preparation method of the active part of Xanthium that has not been found, and the active part or activity of single Xanthium has not been found. Issues such as reporting on ingredient tracking and screening
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Embodiment 1
[0167] Example 1. Preparation method 1 of Xanthium xanthii total glycosides extract
[0168] Xanthium xanthii dry medicinal material 2.5Kg, with 90% ethanol solution 50 liters of reflux extraction twice, 2 hours each time, the two extracts were combined, and concentrated under reduced pressure to obtain 350g of extract. After dispersing with 2 liters of water, the volume was 6 liters in sequence. Petroleum ether was extracted three times for degreasing, and extracted with 6 liters of chloroform and 6 liters of ethyl acetate to remove impurities; the extraction residue was extracted three times with 6 liters of n-butanol, the extracts were combined and freeze-dried to obtain the total glycosides of Xanthium物21g.
Embodiment 2
[0169] Example 2. Preparation method 2 of Xanthium xanthii total glycosides extract
[0170] Xanthium dry medicinal material 2.5Kg, with 70% ethanol solution 50 liters of ultrasonic extraction twice, 2 hours each time, the two extracts were combined, and concentrated under reduced pressure to obtain 208 g of extract. After dispersing with 2 liters of water, the volume was 6 liters in sequence. Petroleum ether was extracted three times for degreasing, and extracted with 6 liters of chloroform and 6 liters of ethyl acetate to remove impurities; the extraction residue was extracted three times with 6 liters of n-butanol, and the extracts were combined and recovered to dryness under reduced pressure to obtain cocklebur Total glycosides extract 17g.
Embodiment 3
[0171] Example 3 Preparation method 3 of Xanthium xanthii total glycosides extract
[0172] Xanthium dry medicinal material 2.5Kg, extracted twice with 75% ethanol solution 50 liters percolation, each time for 24 hours, the two extracts were combined, and concentrated under reduced pressure to obtain 285 g of extract. After dispersing with 2 liters of water, Liter of petroleum ether was extracted three times for degreasing, and 6 liters of chloroform and 6 liters of ethyl acetate were extracted three times to remove impurities; the extraction residue was extracted three times with 6 liters of n-butanol, and the extracts were combined and recovered under reduced pressure to dryness. 19g of total glycosides of auricularia.
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