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Objective To explore the compositional differences in the volatile flavor substances of 6 kinds of Miao rice wines and compare their volatile flavor qualities. Methods Volatile compounds of 6 kinds of Miao rice wines (MJ1-MJ6) were analyzed by headspace solid phase microextraction-gas chromatography-mass spectrometry, and the aroma qualities were compared using principal component analysis. Results A total of 99 kinds of volatile flavor substances were detected in the study, with significant differences in content and composition among the samples, among which 11 kinds of common substances such as ethyl decanoate, isobutanol, ethyl hexanoate and isoamyl acetate constituted the basic flavor of Miao rice wine. MJ1 to MJ6 contained 12, 7, 4, 7, 4 and 11 kinds of unique substances, respectively. The top 3 most abundant substances varied from sample to sample, but were mainly esters. In terms of substance categories, esters and alcohols dominated the volatile flavor substances of 6 kinds of Miao rice wines. Principal component analysis showed that alcohols, aromatics, esters, olefins, acids and other substances were the key factors affecting the aroma quality of rice wine, with the best aroma quality being obtained for rice wine MJ6. Conclusion This study clarifies the characteristics and differences of the aroma substances of 6 kinds of Miao rice wines, and provides an important reference for the development of the Miao rice wine 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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