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Objective To explore the effects of harvesting periods on nutritional quality, processing properties and antioxidant activities of different parts of Fagopyrum tataricum. Methods The harvesting period was determined based on the first flowering time, and the flavonoid content, protein content, dietary fiber content, water holding capacity, oil holding capacity and antioxidant activity of seeds, stems, flowers and leaves of Fagopyrum tataricum at different harvest periods were determined measured and analyzed. Results The seeds, stems, leaves, and flowers of Fagopyrum tataricum all include the rich nutrients and the biological activity ingredient, with excellent processing properties. The flavonoid content, protein content, dietary fiber content, water and oil holding capacity of Fagopyrum tataricum seeds showed a downward trend, while the dietary fiber content of Fagopyrum tataricum stems and flowers generally showed an upward trend. The flavonoid and protein content of Fagopyrum tataricum stems and leaves decreased. The dietary fiber content of Fagopyrum tataricum leaves, flavonoid content and total antioxidant activity of Fagopyrum tataricum flowers increased first and then decreased. The total antioxidant capacity and flavonoid content of Fagopyrum tataricum flowers were significantly higher than other parts of tartary buckwheat. The highest total antioxidant capacity and flavonoid content were found 14 days after flowering, at 369.42 μmol/g and 7.83%, respectively, which were 6.2 and 8.8 times that of Fagopyrum tataricum seeds. Conclusion As food processing raw materials, different parts of Fagopyrum tataricum have the potential and value for food development and processing, and can be fully utilized. The nutrition and functional components of different parts of Fagopyrum tataricum are directly affected by harvest period, and the reasonable harvest period shall be determined based on the purpose in production.
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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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