In order to explore the differences in volatile organic compounds (VOCs) among six different formulations of five-spice seasoning oils, electronic nose, headspace solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS), and gas chromatography-ion mobility spectrometry (GC-IMS) were used in this study. The electronic nose sensor had a strong response to alkanes, alcohols, ketones and aldehydes in VOCs, and PF6 had a strong flavor response. HS-SPME-GC-MS identified 118 VOCs in the six formulations, including olefins, esters, ketones, alcohols, alkanes, aldehydes, acids, phenols, ethers, and heterocyclic compounds. Anise-based PF1 had 31 VOCs, PF3 had 33, PF5 had 37, and PF6 had 46; Cinnamon-based PF2 had 47; Galangal-based PF4 had 32. Relative odor activity value (ROAV) analysis found 14 key VOCs, with anisaldehyde, artemisia ketone, and eucalyptol (responsible for anise and camphor-like aromas) being the major contributors. A total of 45 VOCs were identified by GC-IMS, through principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA), 19 key VOCs differentiating the formulations were found, such as phenethyl alcohol, 2-methyl-2-propanol, ethyl hexanoate, oxylinalool, 1-octanol, and 1-penten-3-one. This study is helpful to provide a basis for the study of complex flavor system, and provide a reference for the development of spice products.
| 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 |