Supercritical Fluid Extraction of Palm Carotenoids | Science Publications

American Journal of Environmental Sciences

Choo Y. May¹  Ma A. Ngan¹  Chuah C. Hock¹  Puah C. Wei¹ 

关键词: Carbon dioxide;    palm oil;    pressure;    solubility;    temperature;   

DOI  :  10.3844/ajessp.2005.264.269

学科分类：环境科学（综合）

来源: Science Publications

【 摘 要 】

The extraction of carotenoids from crude palm oil was carried out in a dynamic (flow- through) supercritical fluid extraction system. The carotenoids obtained were quantified using off-line UV-visible spectrophotometry. The effects of operating pressure and temperature, flow rate of the supercritical carbon dioxide (SC-CO₂), sample size of feed used on the solubility of palm carotenoids were investigated. The results showed that the extraction of carotenoids was governed by its solubility in the SC-CO₂ and can be enhanced by increasing pressure at a constant temperature or decreasing temperature at a constant pressure. Increasing the flow rate and decreasing the sample size can reduce the extraction time but do not enhance the solubility. Palm carotenoids have very low solubility in SC-CO₂ in the range of 1.31 x 10^-4 g kg^-1 to 1.58 x 10^-3 g kg^-1 for the conditions investigated in this study. The experimental data obtained were compared with those published by other workers and correlated by a density-based equation as proposed by Chrastil.

【 授权许可】

Unknown