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The content of anthraquinones in Xiaochengqi Decoction dry extract powder obtained by different drying methods and the similarity of HPLC fingerprint were compared. The properties of dry extract powder under different drying methods were investigated to provide a basis for the drying and particle preparation of Xiaochengqi Decoction dry extract powder.
The Xiaochengqi Decoction dry extract powder was prepared by freezing, pulsating vacuum, spray and vacuum drying, respectively. The contents of free anthraquinone and total anthraquinones in samples using different drying methods were determined, and the similarity of HPLC fingerprints was compared. The physical properties of the dry extract powder were determined, and its physical fingerprint was established to comprehensively evaluate its powder properties.
Compared with the content of anthraquinones in the decoction, there was no significant difference in the dry extract powder obtained by spray drying and pulse vacuum drying (P>0.05), but there was significant difference in the dry paste powder obtained by vacuum drying and freeze drying (P<0.05). The similarity of HPLC fingerprints of Xiaochengqi decoction dry extract powder under the four drying methods were all above 0.978. The physical fingerprints showed that the four drying methods had a certain effect on the powder properties of Xiaochengqi Decoction dry extract powders. The fluidity of the four powders is poor, but the spray-dried samples have good compressibility and uniformity, which can be used for dry granulation of their particles.
The spray drying method is suitable for the preparation of Xiaochengqi Decoction dry extract powder and its granules.
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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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