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Objective To clarify the impact of gastrointestinal fluid digestion on the biological activity of Flammulina velutipes, to investigate the effect of in vitro digestion on the antioxidant activity and α-glucosidase and α-amylase inhibitory activity of Flammulina velutifolia powder. Methods In this study, Flammulina velutipes powder was simulated in vitro digestion of intestine and stomach and analyzed. With 1,1-diphenyl-2-picylhydrazyl (DPPH) free radical, OH free radical, O2- free radical and 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS+) free radical, α-glucosidase and α-amylase inhibition were used as indexes to study the antioxidant activity of Flammulina velutipes powder at different digestion stages. Results After in vitro digestion, the antioxidant activity of Flammulina velutipes powder was enhanced and the free radical scavenging ability of DPPH, OH, O2⁻ and ABTS+ free radical increased. The antioxidant capacity of the digested group was higher than that of the non-digested group. Its inhibitory activity against α-glucosidase and α-amylase was also enhanced and positively correlated with the concentration, and the strongest inhibitory effect on 2 kinds of enzymes was observed after intestinal digestion. Conclusion The antioxidant activity and enzyme inhibitory activity of Flammulina velutipes powder are enhanced after in vitro digestion, which indicate that the digestion process can release and enhance the bioactivity of Flammulina velutipes. However, in vitro antioxidant activity is not directly related to the actual antioxidant activity of the material. This study provides a basis for the processing and utilization of Flammulina velutipes and its activity research.
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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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