To establish a method for identifying adulteration of Puerariae lobatae starch by analysis of microscopic morphological characteristics.
The microscopic morphology of self-prepared authentic Puerariae lobatae starch, corn starch, cassava starch, sweet potato starch and potato starch were observed by using scanning electron microscopy. Through characteristic analysis, the main typical morphologies of various starch microparticles were summarized and described. Then microscopic morphology analyses were conducted respectively on the simulated Puerariae lobatae starch adulterated with corn starch, cassava starch, sweet potato starch and potato starch, summarized the morphological differences and identification points to verify the reliability of the method and carry out the analysis of actual samples.
The differences of microscopic morphological characteristics could distinguish Puerariae lobatae starch from corn starch, cassava starch, sweet potato starch and potato starch when the adulteration was present.
The analysis method of microscopic morphological characteristics can be used to identify the adulteration of Puerariae lobatae starch. The method is simple and does not require sample pretreatment, it can be provide an intuitive and convenient technical for the Puerariae lobatae starch adulteration identification.
| 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 |