Rapid Identification and Odor Difference Markers of Abutili Semen before and after Stir-Frying Based on Heracles NEO Ultra-Fast Gas-Phase Electronic Nose

OBJECTIVE Based on the Heracles NEO ultra-fast gas phase electronic nose, to analyze the odor composition of Abutili Semen before and after stir-frying, and to establish an effective and rapid identification method of raw and stir-frying Abutili Semen based on odor.

METHODS The decoction pieces of Abutili Semen were prepared by stir-frying method. An ultra-fast gas-phase electronic nose method was established for the detection of Abutili Semen before and after stir-frying, the odor spectrum was collected, and the possible odor components and chromatographic peak areas were obtained in combination with the AroChemBase database, and analyzed by chemometric model.

RESULTS The odor fingerprints of Abutili Semen before and after stir-frying were established, and 19 odor peaks were matched between Abutili Semen decoction pieces and stir-fried Abutili Semen. The peak areas of 7 odor components, hexanal, 2-furanmethanol, 2-methyl-2-propanol, 2-methylbutanal, 3-methylbutanal, 2-methylpropanal, 2, 3, 5-trimethylpyrazine, all increased after stir-frying, and the VIP values of the peaks were greater than 1 (P<0.05), which were presumed to be the markers for the differences in the odors of Abutili Semen before and after stir-frying.

CONCLUSION The Heracles NEO ultra-fast gas phase electronic nose can quickly identify the odor components of Abutili Semen before and after frying, which can provide new ideas and methods for quality control of Abutili Semen.