Supercritical CO2 Extraction of Jasmine Bud Essential Oil and Its Antioxidant Activity
To study the optimum technology and antioxidant activity of extracting essential oil from Jasmine buds by supercritical CO2 extraction, and realize the comprehensive utilization of resources. The effects of entrainer dosage, particle size of raw materials, extraction pressure, extraction temperature and dynamic extraction time on the yield of jasmine essential oil were investigated. The extraction process parameters of jasmine essential oil were optimized by response surface methodology. The composition and relative content of volatile oil were analyzed by GC-MS. The ability of essential oil to scavenge DPPH free radicals and reduce iron ions was determined. The results showed that the optimum technological parameters were as follows: ethanol dosage of entrainer was 0.2 mL/g, pollen particles were 40 meshes, extraction pressure was 20 MPa, extraction temperature was 46 C, and dynamic extraction time was 1.6 H. Under these conditions, the yield of jasmine essential oil was 13.67%, much higher than that of simultaneous distillation extraction (2.87%) and ultrasound-assisted extraction (2.45%). The main aroma components of essential oil extracted by supercritical fluid extraction are basically the same as those of jasmine flowers, and have good ability of scavenging free radicals and reducing iron ions. The results showed that the quality of essential oil extracted from Jasmine buds by supercritical fluid extraction was high, which could provide a reference for the comprehensive utilization of jasmine resources.
Tags:co2 extraction machine performance, europe european co2 supercritical extraction service, co2 super critical extraction machines