Tags

Type your tag names separated by a space and hit enter

Supercritical carbon dioxide extraction of oil and squalene from amaranthus grain.
J Agric Food Chem. 2003 Dec 31; 51(27):7921-5.JA

Abstract

Supercritical carbon dioxide (SC CO(2)) was used for the extraction of oil and squalene from Amaranthus grain. Very small amounts of oil could be extracted by SC CO(2) from undisrupted grains, although SC CO(2) possesses higher diffusivity. Grinding increased the extraction rate and oil yield, and smaller particle size gave higher extraction rate. The oil yield and initial extraction rate increased linearly with the increasing SC CO(2) flow rate from 1 to 2 L/min. Increasing the flow rate of SC CO(2) above 2 L/min resulted in only a slight increase of oil yield and extraction rate. In the pressure range of 150-250 bar, extraction decreased with increasing temperature at a constant pressure, whereas at a pressure of 300 bar, the extraction yield increased with increasing temperature. Possible reasons for this are discussed. Effects of temperature and pressure on squalene yield were different from those on oil yield. A good oil yield (4.77 g of oil/100 g of grain) was obtained at 40 degrees C and 250 bar. The highest squalene yield (0.31 g of squalene/100 g of grain) and concentration (15.3% in extract) were obtained at 50 degrees C and 200 bar, although the oil yield under this condition was low (2.07 g of oil/100 g of grain). The moisture content within 0-10% had little influence on yields of oil and squalene at 40 degrees C and 250 bar. Finally, the oil yield and the squalene concentration in the extracts by SC CO(2) were compared to those by solvent extraction.

Authors+Show Affiliations

Department of Botany, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

14690374

Citation

He, Han-Ping, et al. "Supercritical Carbon Dioxide Extraction of Oil and Squalene From Amaranthus Grain." Journal of Agricultural and Food Chemistry, vol. 51, no. 27, 2003, pp. 7921-5.
He HP, Corke H, Cai JG. Supercritical carbon dioxide extraction of oil and squalene from amaranthus grain. J Agric Food Chem. 2003;51(27):7921-5.
He, H. P., Corke, H., & Cai, J. G. (2003). Supercritical carbon dioxide extraction of oil and squalene from amaranthus grain. Journal of Agricultural and Food Chemistry, 51(27), 7921-5.
He HP, Corke H, Cai JG. Supercritical Carbon Dioxide Extraction of Oil and Squalene From Amaranthus Grain. J Agric Food Chem. 2003 Dec 31;51(27):7921-5. PubMed PMID: 14690374.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Supercritical carbon dioxide extraction of oil and squalene from amaranthus grain. AU - He,Han-Ping, AU - Corke,Harold, AU - Cai,Jian-Guo, PY - 2003/12/24/pubmed PY - 2004/3/6/medline PY - 2003/12/24/entrez SP - 7921 EP - 5 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 51 IS - 27 N2 - Supercritical carbon dioxide (SC CO(2)) was used for the extraction of oil and squalene from Amaranthus grain. Very small amounts of oil could be extracted by SC CO(2) from undisrupted grains, although SC CO(2) possesses higher diffusivity. Grinding increased the extraction rate and oil yield, and smaller particle size gave higher extraction rate. The oil yield and initial extraction rate increased linearly with the increasing SC CO(2) flow rate from 1 to 2 L/min. Increasing the flow rate of SC CO(2) above 2 L/min resulted in only a slight increase of oil yield and extraction rate. In the pressure range of 150-250 bar, extraction decreased with increasing temperature at a constant pressure, whereas at a pressure of 300 bar, the extraction yield increased with increasing temperature. Possible reasons for this are discussed. Effects of temperature and pressure on squalene yield were different from those on oil yield. A good oil yield (4.77 g of oil/100 g of grain) was obtained at 40 degrees C and 250 bar. The highest squalene yield (0.31 g of squalene/100 g of grain) and concentration (15.3% in extract) were obtained at 50 degrees C and 200 bar, although the oil yield under this condition was low (2.07 g of oil/100 g of grain). The moisture content within 0-10% had little influence on yields of oil and squalene at 40 degrees C and 250 bar. Finally, the oil yield and the squalene concentration in the extracts by SC CO(2) were compared to those by solvent extraction. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/14690374/Supercritical_carbon_dioxide_extraction_of_oil_and_squalene_from_amaranthus_grain_ L2 - https://doi.org/10.1021/jf030488y DB - PRIME DP - Unbound Medicine ER -