Sweet almond is one of the main cash crops in Yingjisha, Xinjiang Autonomous Region, China. The composition of sweet almond oil (SAO) was analysed by gas chromatography-mass spectrometry (GC-MS). SAO's antioxidant activities were investigated by measuring its scavenging ability with 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2′-Azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), hydroxyl radical scavenging assay and 6-hydroxy-2,5, 7,8-tetramethylchroman-2-carboxylic acid (Trolox) equivalent antioxidant capacity (TEAC) assay. Furthermore, in vivo antioxidant capacity was assessed using Saccharomyces cerevisiae model stimulated by hydrogen peroxide (H2O2) and carbon tetrachloride (CCl4). The results showed that SAO was mainly composed of methyl oleate (21.28%), methyl stearate (18.55%) and methyl palmitate (14.1%). In vitro antioxidant test results showed that compared with the scavenging three free radicals capacity of 1mmolL-1 Trolox, the SAO needed to reach 5mgmL-1, 20mgmL-1 and less than 20mgmL-1, respectively. In vivo experiments showed that SAO rescued the survival...

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