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Objective To explore the effect of stir-frying and ultramicro grinding on the quality of Crataegus pinnatifida kernel. Methods The Crataegus pinnatifida kernels produced and processed by the enterprise were used as the test materials, and the Crataegus pinnatifida kernels were treated by ordinary grinding, frying-ordinary grinding and frying-ultrafine grinding combined treatment technology, and the physical properties of surface color, surface structure, water-holding capacity, oil-holding capacity, and the changes of oxidation resistance and flavonoid release were determined. Results The Crataegus pinnatifida kernel powder treated by frying and ultrafine grinding had an increased binding capacity to water, a solubility of 35.63%, an expansion force of 3.71 mL/g, and an oil-holding capacity of 2.61 g/g. The angle of repose and slip angle were reduced to 37.12° and 43.63°, respectively. The flavonoid release rate of Crataegus pinnatifida kernel powder increased from 60.47% to 71.48%, and the oxidant resistance increased by nearly 20%, which was manifested by a increase in the scavenging rates of 2,2-diazine-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) cationic radical, 1,1-diphenyl-2- picrylhydrazyl (DPPH) radicals and hydroxyl radicals. Conclusion Therefore, the combined treatment technology of frying and ultrafine grinding is a feasible processing method for Crataegus pinnatifida kernel powder. This technology can effectively improve the physicochemical properties of Crataegus pinnatifida kernel powder and increase the total flavonoid release rate. The results of this study are helpful to enhance the market value of Crataegus pinnatifida nuclear powder and promote the sustainable development of Crataegus pinnatifida industry.
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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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