Supercritical fluid extraction of jojoba oil
Supercritical fluid extraction of jojoba oil
复制标题
DOI：
10.1007/s11746-004-0898-3
复制
发表时间：
2004-03
期刊：
影响因子：
--
通讯作者：
U. Salgın;A. Çalımlı;Bekir Zühtü Uysal
中科院分区：
文献类型：
--
作者：
U. Salgın;A. Çalımlı;Bekir Zühtü Uysal
以西蒙得木种子为原料，采用超临界CO2流体萃取技术提取霍霍巴油。考察了萃取压力、萃取温度、霍霍巴种子粒度、CO2流量、萃取剂（己烷）浓度等工艺参数对萃取率的影响。超临界二氧化碳流速、温度和压力的增加通常会提高性能。提取率随着颗粒尺寸的减小而增加，表明降低颗粒内扩散阻力的重要性。在90°C和600 bar下，在0.23 mm粒度和2 mL/min CO2流速下获得的最大提取率为50.6 wt%。使用浓度为5体积%的增塑剂将相同粒度的产率提高到52.2重量%，并且还能够使用相对较低的压力和温度，即，300 bar和70°C。
Supercritical fluid extraction of jojoba oil fromSimmondsia chinensisseeds using CO2as the solvent is presented in this study. The effects of process parameters such as pressure and temperature of extraction, particle size of jojoba seeds, flow rate of CO2, and concentration of entrainer (hexane) on the extraction yield were examined. Increases in the supercritical CO2flow rate, temperature, and pressure generally improved the performance. The extraction yield increased as the particle size decreased, indicating the importance of decreasing intraparticle diffusional resistance. The maximum extraction yield obtained was 50.6 wt% with a 0.23-mm particle size and a 2 mL/min CO2flow rate at 90°C and 600 bar. Use of an entrainer at a concentration of 5 vol% improved the yield to 52.2 wt% for the same particle size and also enabled the use of relatively lower pressure and temperature, i.e., 300 bar and 70°C.