超临界CO_2流体萃取柑橘皮精油工艺的研究

Extraction Craft of Orange Peel Oil with Supercritical Carbon Dioxide Fluid

[目的]充分利用柑橘果皮渣。[方法]采用超临界CO2萃取技术对柑橘皮精油进行萃取分离试验,考察萃取时间、萃取压力、萃取温度、萃取CO2流量等对提取率的影响,并对乙醇作为夹带剂进行了试验。[结果]最优工艺组合为:萃取温度35℃,萃取压力15MPa,萃取时间150 min,CO2流量23 L/h。加乙醇作夹带剂的提取率比所查资料的提取率高,提取率为10.164%。[结论]在现有设备条件下,该工艺组合的得率是最理想的。

[ Objective ] The research aimed to make good use of the orange peel residue. [ Method ] The supercritical CO2 Fluid Extraction was used to make an experiment of extraction for the oil of orange peel. The effects of extraction time, extraction pressure, extraction temperature, and flow rate of carbon dioxide on the extraction rate were studied. In addition, ethanol as entrainment agent was studied. [ Result] The best combination of technology was as follows： the extraction temperature was 35 ℃, the extraction pressure was 15 M Pa, the extraction was 150 minute, and the carbon dioxide flow was 23 L/h. The extraction rate increased for entrainer ethanol extract. And the rate of extraction was 10. 167%. [ Conclusion] It was the best craft with the technology of modern facilities.