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Objective To investigate the effects of Bacillus natto fermentation on the quality characteristics and storage stability of Arachis hypogaea L. natto produced from red Arachis hypogaea L.. Methods A novel Arachis hypogaea L. product, Arachis hypogaea L. natto, was prepared through fermentation using Bacillus natto, and its quality characteristics and storage stability were systematically evaluated. In this study, the protein content, fat content and flavor compounds of Arachis hypogaea L. natto were determined. Sensory scores and L* were monitored during the storage period. Additionally, the levels of total volatile basic nitrogen (TVB-N), amino acid nitrogen and a* were assessed. Results The results indicated that compared with unfermented Arachis hypogaea L., the protein content of Arachis hypogaea L. natto decreased to 25.84%, and the fat content reduced to 17.72%. Fermentation promoted the production of alcohol and aromatic compounds, resulting in distinct flavor profiles characterized by sourness, saltiness, umami and bitterness. During fermentation, lipolysis produced linoleic acid, leading to a reduction in fat content. Moreover, some free water became less mobile, transitioning into weakly bound water. Over time, the sensory score and L* and b* of Arachis hypogaea L. natto declined, whereas the levels of TVB-N, amino acid nitrogen increased. Conclusion Bacillus natto fermentation significantly alters the nutritional composition and flavor characteristics of Arachis hypogaea L. natto. sensory quality deteriorates during storage. These findings provide a theoretical foundation for utilizing Bacillus natto in Arachis hypogaea L. fermentation and offer new insights into developing innovative Arachis hypogaea L. products.
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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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