Special Issue "Supercritical Fluid Extraction"

Guest Editor
Prof. Dr. Kazuhiro Tamura
Department of Chemistry and Chemical Engineering, Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
E-Mail: tamura@t.kanazawa-u.ac.jp

Dear Colleagues,

Supercritical fluid extraction is a novel, unique and innovative technology suitable for extraction, fractionation and purification of a variety of natural and benign products in place of conventional solvent extraction. Supercritical fluid can facilitate mass transfer of the extracts due to the physical properties such as higher diffusivity and lower viscosity and surface tension. Mainly supercritical carbon dioxide has been used to extract the compounds that are low volatile and susceptible to thermal degradation and decomposition in various processes in food and pharmaceutical industries.

This special issue will focus on research topics such as solubility, diffusion, mass transfer, extract properties, extraction recovery and yield, processing, and their relevant modeling and so on. Novel application research as well as basic research with high quality concerning supercritical extraction will be presented to develop environmental friendly and green processes towards the sustainable society.

Prof. Dr. Kazuhiro Tamura
Guest Editor

Submission

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• supercritical carbon dioxide
• purification
• extraction
• fractionation
• green and sustainable technology
• food
• pharmaceutical

Title: Solubility Correlation of Allspice Essential Oil in Supercritical Carbon Dioxide
Authors: Julian Cruz-Olivares ¹, César Pérez-Alonso ¹, Carlos Barrera-Díaz ¹, Ciro Humberto Ortiz-Estrada ² and María del Carmen Chaparro-Mercado ³
Affiliations: ¹ Universidad Autónoma del Estado de México. Facultad de Química. Paseo Colón intersección Paseo Tollocan S/N. 50120, Toluca, Estado de México, México; jcruzo@uaemex.mx (J.C.O.)
² Departamento de Ingeniería y Ciencias Químicas. Universidad Iberoamericana. Prol. Paseo de la Reforma 880. Lomas de Santa Fe. Álvaro Obregón. 01219. D.F. México
³ Departamento de Ingenierías. Universidad Iberoamericana. Prol. Paseo de la Reforma 880. Lomas de Santa Fe. Álvaro Obregón. 01219. D.F. México
Abstract: Allspice essential oil was extracted with supercritical carbon dioxide (SC-CO₂) at different temperatures [(208.15 to 228.15) K] and pressures [(10 to 30) MPa]. A simple thermodynamic model based on a single distribution coefficient K_D was used to correlate the percentage of essential oil extracted. The solubility expressed as (g essential oil/100g dried allspice) was determined at definite temperature, pressure and extraction time. The experimental solubility data were successfully correlated with the modified Chrastil equation.
Keywords: Solubility; Allspice essential oil; Supercritical carbon dioxide; Modified Chrastil model

Type of Paper: Article
Title: Supercritical Fluid Extraction of Bacterial and Archaeal Lipid Biomarkers from Anaerobically Digested Sludge
Authors: Muhammad Hanif, Yoichi Atsuta, Koichi Fujie and Hiroyuki Daimon
Affiliation: Department of Environmental and Life Sciences, Toyohashi University of Technology, Aichi 441-8580, Japan; E-Mail: hanif@water.ens.tut.ac.jp (M.H.)
Abstract: Supercritical fluid extraction was applied for the simultaneous determination of bacterial respiratory quinones, phospholipids fatty acids and archaeal phospholipid etherlipids community structure from the anaerobically digested sludge.  A multiple response optimization was investigated to study the effect of pressure, temperature and modifier concentration on the total amount of microbial lipids.  The conventional organic solvent extraction was also used to evaluate the reliability of the method.  Overall, supercritical fluid extraction is well-suited for routine analysis of microbial lipid community structure during anaerobic digestion process.
Keywords: anaerobically digested sludge; multiple response optimization; microbial lipid biomarker; supercritical fluid extraction