To investigate the effects of different drying methods on Millettia speciosa Champ.quality.
Millettia speciosa Champ. samples were processed into powder using vacuum microwave drying(VMD), vacuum drying (VD) and hot-air drying (HAD). Their microstructures were observed, and color difference, total flavonoids, total phenolics, polysaccharides and starch content were measured. Additionally, their ability to scavenge 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2’-azino-bis (3-ethylbenzothiazoline-6-sulfonate acid) diammonium salt (ABTS) positive ion free radicals was assessed.
The VMD group exhibited the highest levels of total flavonoids (1.95±0.01) mg/g, total phenols (18.14±0.18) mg/g and polysaccharides (280.73±1.35) mg/g. The radical scavenging rate of DPPH (54.17±0.09)% and the positive ion radical scavenging rate of ABTS(37.37±0.00)% were both the best. VD yielded the second-highest values, while HAD produced the lowest, with significant differences among all 3 groups (P<0.05).
VMD optimally preserves Millettia speciosa Champ. components, including total flavonoids, total phenolics and polysaccharides, while enhancing radical scavenging capacity, making it the most suitable drying method.
| 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 |