Commonly used dosage forms of fermented Cordyceps powder products are capsules and tablets. The hygroscopicity of the powder,as one of the important parameters in the tableting process,has important effects on the tabletting process of the tablets. How to improve the hygroscopicity of powder is of great significance for the development of new composite particles. Therefore,particle design technology was used in this study to prepare composite particle powder,and its hygroscopicity was compared with fermented Cordyceps powder and physically mixed powder. By preparing three different types of powders,the equilibrium moisture absorption,particle size,scanning electron micrograph,angle of repose,contact angle and compression degree were compared to observe the effect of traditional Chinese medicine particle design technology on improving the hygroscopicity of the fermented Cordyceps powder. The results showed that the equilibrium moisture absorption was 21. 2%,19. 6%,14. 5% respectively for the fermented Cordyceps powder,physically mixed powder and composite particle powder; the median diameter was(49. 751± 0. 280),(59. 183± 0. 170),(12. 842±0. 080) μm,respectively; the mode diameter was(185. 479±1. 372),(173. 964± 1. 104),(61. 671± 0. 979) μm,respectively. In the scanning electron micrograph of the composite particle powder,it can be clearly seen that the fermented Cordyceps powder had hydrophobic gas phase nano-silica with a fixed shape and uniform size. The angle of repose was(50. 63 ± 0. 75) °,(49. 25 ± 0. 43) °,(48. 33±0. 84) ° respectively; the contact angle was(7. 4±0. 2) °,(8. 2±0. 3) °,(15. 0±2. 6) ° respectively; and the compression degree was(38. 2±1. 3) %,(35. 8±0. 2) %,(32. 5±2. 6) % respectively. This study showed that after treatment by the vibrating ultrafine pulverizer,the fermented Cordyceps powder particles had obvious and uniform small particle hydrophobic gas phase nano-silica adhered to form a partially wrapped coating structure,which reduced the contact surface of fermented Cordyceps powder with the outside world,thereby reducing the hygroscopicity of the composite particle powder. It further demonstrated that the hygroscopicity of fermented Cordyceps powder can be improved by particle design.
Cordyceps ; Fermentation ; Medicine, Chinese Traditional ; Particle Size ; Powders ; Wettability