To investigate the roles of 6-methoxy-benzoxazolin-2-one (MBOA) and benzoxazolin-2-one (BOA) in the health-promoting effects of whole-grain foods, this study evaluated their in vitro antioxidant capacity and modulatory effects on gut microbiota. The results demonstrated that while MBOA and BOA exhibited dose-dependent antioxidant activity, their efficacy was inferior to that of ferulic acid. Compared to equivalent doses of ferulic acid, MBOA, BOA, and the mixture significantly enhanced microbial diversity in a dose-dependent manner, with the mixture showing optimal efficacy. At the phylum level, these compounds significantly reduced the relative abundances of Proteobacteria and Bacteroidetes while increasing those of Firmicutes and Actinobacteria. At the genus level, they markedly elevated the relative abundances of Bifidobacterium and reduced Escherichia, Prevotella, and Bacteroides. This study indicates that MBOA and BOA in whole grains possess substantial prebiotic potential.
| 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 |