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Special Issue "Advances in Supercritical Fluid Extraction"
Deadline for manuscript submissions: 29 February 2020.
Interests: The chemistry of liquids and solutions, dealing with inter alia with solvent properties and applications, including those of supercritical fluids, as well as liquid–liquid solvent extraction
The search for neoteric solvents to replace ecologically unfriendly organic solvents, in addition to room temperature ionic liquids and deep eutectic solvents, also includes supercritical solvents. The latter are used as reaction media and for the extraction of valuable substances from a variety of materials. The term ‘supercritical fluid extraction’ is generally applied to the use of supercritical carbon dioxide, neat or with entrainers (co-solvents). However, this term should also include other fluids, namely supercritical water, methanol, or ethanol, among a few others.
The use of supercritical carbon dioxide for the decaffeination of coffee beans is presently a well-established industry, but decaffeination of other beverages is coming to the forefront. Other uses of supercritical carbon dioxide are for extraction processes in the food industry and in the pharmaceutical and cosmetic industries, and these are maturing. On the other hand, supercritical water has found uses in the fuel production industry for extraction of liquid or gaseous fuels from coal or the conversion of plant biomass to biodiesel oil. Supercritical methanol is useful for transesterification processes during such extractions.
It is the purpose of this Special Issue of Process on “Advances in Supercritical Fluid Extraction” to highlight recent progress and to point out trends, prospects, and areas in which further research will be very beneficial for this area.
Prof. Dr. Yizhak Marcus
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes is an international peer-reviewed open access monthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Please note that for papers submitted after 30 June 2020 an APC of 1500 CHF applies. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
- supercritical carbon dioxide
- supercritical water
- supercritical methanol
- supercritical ethanol
- food industry
- pharmaceutical industry
- cosmetic industry
- fuel processing
- biomass processing
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
1. Title: Study on supercritical fluid extraction and Bioactivity of essential oil from Baopuxianggui
Author: Dr. Hua Zhang
Abstract: In order to investigate the functional properties of essential oils from Baopuxianggui. This paper studied the extraction of essential oil by supercritical carbon dioxide extraction with dry and crushed Baopuxianggui as raw material. Through single factor analysis, the research discussed the influence of three factors: extraction temperature, extraction pressure and extraction time on the extraction rate of the essential oil. Then the study used the response surface software to optimize the extraction of the process conditions and discussed the antioxidant of it. The best extraction process parameters were: the extraction pressure was 18 MPa, the extraction temperature was 40℃, and the extraction time was 1.6h. Under this condition, the extraction rate of the essential oil was 0.97%. The research evaluated the antioxidant properties of the essential oil through the determination of DPPH., ·OH、ABTS. radical scavenging capacity, and the determination of total reducing power. Based on the results of the four methods, the research concluded that the essential oil has strong antioxidant activity.
2. Title: Structure and properties of super-critical water explored by the statistical mechanics theory of molecular liquids
Author: Dr. Hirata
Abstract: Water in the supercritical region in the phase diagram exhibits a markedly different structure and properties from that in the ambient condition, which are useful to control the chemical reactions. Nonetheless, the theoretcial treatment of the matter is not so easy because the region is right next to the critical point. The article is devoted to review the theoretical studies on water in the super-critical region and its properties as a solvent of chemical reaction, carried out by the authors based on the statistical mechanics theory of molecular liquids, or the RISM theory. The manuscript includes the following sections:
(1) Properties of water in a wide range of pressure and temperature
including the super-critical region.
(2) Characterization of super-critical region in terms of the concept of
“Ridge” in the phase diagram.
(3) pKw in the super critical water.
(4) The Diels-Alder reaction in the super-critical water.