TY - JOUR
T1 - Fractionation of hops-extract–ethanol solutions using dense CO2 with a counter-current extraction column
AU - Hoshino, Yuki
AU - Ota, Masaki
AU - Sato, Yoshiyuki
AU - Smith, Richard Lee
AU - Inomata, Hiroshi
N1 - Funding Information:
Financial aid was provided by a Grant-in-Aid for Scientific Research and Japan Society for Promotion of Science, MEXT NET project, TOBE MAKI Scholarship Foundation and Urakami Foundation for Food and Food Culture Promotion. Suntory Holdings Limited is acknowledged for advice on hops-extracts.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/6
Y1 - 2018/6
N2 - Hops-extract–ethanol solutions were contacted counter-currently with dense CO2 in a 0.22 m column at temperatures of (313.2–353.2) K, pressures of (5.0–12.0) MPa, at solute-free solvent-to-feed (S/F) mass ratios of 3.8 and 8.6 for fractionating flavor and bitter compounds. Flavor-purity ratio (Pf) defined as flavor-compound mass over identified-compound mass was about 1.0 at 313.2 K, 6 MPa at S/F = 8.6. At these conditions, flavor-recovery ratio (Rf) defined as flavor-compound mass over feed flavor-compound mass was less than 0.03. At 353.2 K, 12.0 MPa at S/F = 8.6, maximum column productivity (Pf = 0.76, Rf = 0.69) was obtained. Conditions giving maximum purity and highest selectivity (Pf = 0.99, Rf = 0.27) were 333.2 K, 8.0 MPa at S/F = 8.6. In fractionation of feed solutions containing ethanol, column performance is dominated by ethanol distribution that is conveniently manipulated with conditions of the CO2.
AB - Hops-extract–ethanol solutions were contacted counter-currently with dense CO2 in a 0.22 m column at temperatures of (313.2–353.2) K, pressures of (5.0–12.0) MPa, at solute-free solvent-to-feed (S/F) mass ratios of 3.8 and 8.6 for fractionating flavor and bitter compounds. Flavor-purity ratio (Pf) defined as flavor-compound mass over identified-compound mass was about 1.0 at 313.2 K, 6 MPa at S/F = 8.6. At these conditions, flavor-recovery ratio (Rf) defined as flavor-compound mass over feed flavor-compound mass was less than 0.03. At 353.2 K, 12.0 MPa at S/F = 8.6, maximum column productivity (Pf = 0.76, Rf = 0.69) was obtained. Conditions giving maximum purity and highest selectivity (Pf = 0.99, Rf = 0.27) were 333.2 K, 8.0 MPa at S/F = 8.6. In fractionation of feed solutions containing ethanol, column performance is dominated by ethanol distribution that is conveniently manipulated with conditions of the CO2.
KW - Caryophyllene
KW - Distribution coefficient
KW - Extraction
KW - Fractionation
KW - Humulene
KW - Myrcene
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U2 - 10.1016/j.supflu.2018.02.005
DO - 10.1016/j.supflu.2018.02.005
M3 - Article
AN - SCOPUS:85042379399
SN - 0896-8446
VL - 136
SP - 37
EP - 43
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
ER -