Measurement and correlation of vapor-liquid distribution coefficients of flavonoids in high pressure carbon dioxide – ethanol – water systems

Soma Sato; Masaki Ota; Yoshiyuki Sato; Richard Lee Smith; Hiroshi Inomata

doi:10.1016/j.fluid.2019.02.015

Measurement and correlation of vapor-liquid distribution coefficients of flavonoids in high pressure carbon dioxide – ethanol – water systems

Soma Sato, Masaki Ota, Yoshiyuki Sato, Richard Lee Smith, Hiroshi Inomata

Tohoku University

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

4 被引用数 (Scopus)

抄録

Vapor-liquid equilibria (VLE) and distribution coefficients (K-values) of carbon dioxide (CO ₂ ) - ethanol - water ternary systems and CO ₂ - ethanol - water - flavonoid (flavone, 6-methoxyflavone or 7-hydroxyflavone) quaternary systems were measured with a flow type apparatus at (313 to 353) K and (10 to 20) MPa. CO ₂ - ethanol - flavonoid ternary systems were measured at a nominal range of temperatures and pressures. The K-values of all flavonoids increased with increasing pressure. It was also indicated that the K-values of relatively lipophilic components such as flavone and 6-methoxyflavone increased with increasing water composition in feed while those of relatively hydrophilic components such as 7-hydroxyflavone increased with increasing ethanol composition in feed. A simple dimensionless relationship in terms of the K-values of the solvents (K _CO2 , K _EtOH , K _H2O ) and the entropy-based solubility parameters of the vapor and liquid phases was developed to correlate the K-values of the three solutes in the CO ₂ - ethanol - water systems over the full range of conditions studied.

本文言語	英語
ページ（範囲）	90-98
ページ数	9
ジャーナル	Fluid Phase Equilibria
巻	489
DOI	https://doi.org/10.1016/j.fluid.2019.02.015
出版ステータス	出版済み - 2019 6月 15

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10.1016/j.fluid.2019.02.015

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title = "Measurement and correlation of vapor-liquid distribution coefficients of flavonoids in high pressure carbon dioxide – ethanol – water systems",

abstract = " Vapor-liquid equilibria (VLE) and distribution coefficients (K-values) of carbon dioxide (CO 2 ) - ethanol - water ternary systems and CO 2 - ethanol - water - flavonoid (flavone, 6-methoxyflavone or 7-hydroxyflavone) quaternary systems were measured with a flow type apparatus at (313 to 353) K and (10 to 20) MPa. CO 2 - ethanol - flavonoid ternary systems were measured at a nominal range of temperatures and pressures. The K-values of all flavonoids increased with increasing pressure. It was also indicated that the K-values of relatively lipophilic components such as flavone and 6-methoxyflavone increased with increasing water composition in feed while those of relatively hydrophilic components such as 7-hydroxyflavone increased with increasing ethanol composition in feed. A simple dimensionless relationship in terms of the K-values of the solvents (K CO2 , K EtOH , K H2O ) and the entropy-based solubility parameters of the vapor and liquid phases was developed to correlate the K-values of the three solutes in the CO 2 - ethanol - water systems over the full range of conditions studied.",

keywords = "Equation of state, Flow apparatus, K-values, Phase equilibria, Supercritical CO",

author = "Soma Sato and Masaki Ota and Yoshiyuki Sato and Smith, {Richard Lee} and Hiroshi Inomata",

note = "Funding Information: The authors wish to acknowledge partial support of this research from the Research Center of Supercritical Fluid Technology, Tohoku University and JSPS KAKENHI Grant-Number 17K06884 . Financial aid was provided by Ministry of Education, Culture, Sports, Science and Technology (MEXT) NET project , a Grant-in-Aid for Scientific Research and Japan Society for Promotion of Science , Tobe Maki Scholarship Foundation , Urakami Foundation for Food and Food Culture Promotion , Mukai Science and Technology Foundation and LOTTE Foundation . Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = jun,

day = "15",

doi = "10.1016/j.fluid.2019.02.015",

language = "English",

volume = "489",

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journal = "Fluid Phase Equilibria",

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T1 - Measurement and correlation of vapor-liquid distribution coefficients of flavonoids in high pressure carbon dioxide – ethanol – water systems

AU - Sato, Soma

AU - Ota, Masaki

AU - Sato, Yoshiyuki

AU - Smith, Richard Lee

AU - Inomata, Hiroshi

N1 - Funding Information: The authors wish to acknowledge partial support of this research from the Research Center of Supercritical Fluid Technology, Tohoku University and JSPS KAKENHI Grant-Number 17K06884 . Financial aid was provided by Ministry of Education, Culture, Sports, Science and Technology (MEXT) NET project , a Grant-in-Aid for Scientific Research and Japan Society for Promotion of Science , Tobe Maki Scholarship Foundation , Urakami Foundation for Food and Food Culture Promotion , Mukai Science and Technology Foundation and LOTTE Foundation . Publisher Copyright: © 2019 Elsevier B.V.

PY - 2019/6/15

Y1 - 2019/6/15

N2 - Vapor-liquid equilibria (VLE) and distribution coefficients (K-values) of carbon dioxide (CO 2 ) - ethanol - water ternary systems and CO 2 - ethanol - water - flavonoid (flavone, 6-methoxyflavone or 7-hydroxyflavone) quaternary systems were measured with a flow type apparatus at (313 to 353) K and (10 to 20) MPa. CO 2 - ethanol - flavonoid ternary systems were measured at a nominal range of temperatures and pressures. The K-values of all flavonoids increased with increasing pressure. It was also indicated that the K-values of relatively lipophilic components such as flavone and 6-methoxyflavone increased with increasing water composition in feed while those of relatively hydrophilic components such as 7-hydroxyflavone increased with increasing ethanol composition in feed. A simple dimensionless relationship in terms of the K-values of the solvents (K CO2 , K EtOH , K H2O ) and the entropy-based solubility parameters of the vapor and liquid phases was developed to correlate the K-values of the three solutes in the CO 2 - ethanol - water systems over the full range of conditions studied.

AB - Vapor-liquid equilibria (VLE) and distribution coefficients (K-values) of carbon dioxide (CO 2 ) - ethanol - water ternary systems and CO 2 - ethanol - water - flavonoid (flavone, 6-methoxyflavone or 7-hydroxyflavone) quaternary systems were measured with a flow type apparatus at (313 to 353) K and (10 to 20) MPa. CO 2 - ethanol - flavonoid ternary systems were measured at a nominal range of temperatures and pressures. The K-values of all flavonoids increased with increasing pressure. It was also indicated that the K-values of relatively lipophilic components such as flavone and 6-methoxyflavone increased with increasing water composition in feed while those of relatively hydrophilic components such as 7-hydroxyflavone increased with increasing ethanol composition in feed. A simple dimensionless relationship in terms of the K-values of the solvents (K CO2 , K EtOH , K H2O ) and the entropy-based solubility parameters of the vapor and liquid phases was developed to correlate the K-values of the three solutes in the CO 2 - ethanol - water systems over the full range of conditions studied.

KW - Equation of state

KW - Flow apparatus

KW - K-values

KW - Phase equilibria

KW - Supercritical CO

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EP - 98

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

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