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OBJECTIVE To optimize the spray drying process of Ejiao zaoqi water extract concentrate, and to measure the physical fingerprint of spray drying extract powder. METHODS The powder yield, calycosin-7-O-β-D-glucopyranoside transfer rate, hesperidin transfer rate and extract moisture content were used as evaluation indexes, and the AHP-entropy weight method was used to weight, and the spray drying process was optimized by Plackett-Burman test combined with Box-Behnken response surface method. Twelve secondary physical indexes of micromeritic properties, such as moisture content and bulk density of spray dried extract powder, were determined, and the physical fingerprints was determined for similarity analysis. RESULTS The optimal spray drying conditions were as follows: liquid concentration of 0.25 g·mL-1, addition of dextrin 5.0 g·100 mL-1, air inlet velocity of 0.41 m3·min-1, air temperature of 140 ℃, injection speed of 10 mL·min-1, temperature of liquid 60 ℃, and gun pressure of 0.4 MPa. The similarity of the physical fingerprints of the 10 batches of detection powder was greater than 0.9. CONCLUSION The spray drying process of the selected Ejiao zaoqi water extract concentrate is stable and feasible, which can provide a basis for the research and development of this preparation.
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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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