Publisher DOI: 10.1021/je100229f
Title: Solubilities and adsorption equilibria of β-carotene in supercritical and near-critical fluids
Language: English
Authors: Chuang, Meng-Han 
Johannsen, Monika  
Issue Date: 25-Feb-2011
Publisher: American Chemical Society
Source: Journal of Chemical and Engineering Data 5 (56): 1770-1777 (2011)
Journal or Series Name: Journal of chemical & engineering data 
Abstract (english): A systematic investigation of solubility and adsorption equilibria of β-carotene in carbon dioxide and propane, respectively, at elevated pressures was carried out. Investigated at (303, 313, and 323) K and over a pressure range from (3.2 to 13.4) MPa, the solubility of β-carotene in propane was in the range of (110 to 450) mg·kg-1 propane and approximately 2 orders of magnitude higher than that in supercritical carbon dioxide. Adsorption equilibria of β-carotene in carbon dioxide with a modifier and in propane were studied on nonpolar chromatographic adsorbents. Concerning adsorption equilibria of β-carotene in carbon dioxide with 2-propanol as a modifier, the loading decreases with increasing modifier content and increasing pressure. Regarding the adsorption equilibrium of β-carotene in propane, the loading achieved is much lower than in carbon dioxide due to the higher solubility of β-carotene in propane.
URI: http://hdl.handle.net/11420/4706
ISSN: 1520-5134
Institute: Thermische Verfahrenstechnik V-8 
Type: (wissenschaftlicher) Artikel
Funded by: German Research Foundation DFG Grant 339/6
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