Abstract:In this study，three varieties of jasmine were extracted using supercritical fluid extraction.The differences in volatile components and the relative content of jasmine absolute oil were determined using gas chromatography-mass spectrometry，and the antioxidant properties of jasmine absolute oil were evaluated using αdiphenyl-β-picrylhydrazyl and 2，2′-azino-bis（3-ethylbenzothiazoline-6-sulfonic acid）methods.The results showed some differences in extraction yield，appearance，aroma，chemical composition，and antioxidant activity between the three varieties of jasmine.A total of 98 compounds were identified in the pure absolute oil，and 49 components were in total.Eighty-four compounds were identified from single-petal，56 from double-petal，and 82 from multiple petal varieties of jasmine.Ester compounds were the most abundant compounds in the net absolute oils of the three varieties，and the number and relative content of aromatic substances were significantly different between different types of jasmine absolute oil.All three types of jasmine absolute oil had good free radical scavenging ability，but there were some differences in antioxidant activity.Antioxidant activity was clearly higher in double-petal jasmine absolute oil than in oil from the other two varieties.