Green solvents and their application for plant extraction and separation processes

General ILL Seminar organised by College 9
Thursday, 20 September 2018 at 14:00
Seminar Room, 1st Floor, ILL 4

Werner Kunz
University of Regensburg, Institute of Physical and Theoretical Chemistry, D‐93040 Regensburg, Germany, email: Werner.Kunz@ur.de

In the first part of my talk, I will give a critical review on green solvent systems, including hydrotropes, Ionic Liquids, Deep Eutectic Solvents, and Surfactant‐free Microemulsions (SFME). I will present different classical and less classical systems and discuss the criteria for their usability as well as some practical examples [1].

In the second part of my talk, I will focus on plant extraction and separation processes and here, in particular, on the extraction of lipids. As an example, a green Bligh and Dyer alternative will be discussed [2]. Based on another collaboration with the group GREEN run by Farid Chemat in Avignon, I will show how choline salts can be used to simplify the extraction/separation process of fatty acids [3].

[1] K. Häckl and W. Kunz, Some aspects of green solvents, Comptes Rendus de l’Académie des Sciences (France) Chimie 21
(2018) 572‐580.
[2] C. Breil, M. Abert Vian, Th. Zemb, W. Kunz, and F. Chemat, “Bligh & Dyer” and Folch methods for solid‐liquid‐liquid extraction of lipids from microorganisms. Comprehension of solvation mechanisms and towards substitution with alternative solvents, International Journal of Molecular Sciences 18 (2017) 708‐728.
[3] C. Breil, A. Meullemiestre, M. Abert‐Vian, W. Kunz, F. Chemat, Procédé d’obtention d’acides gras à partir de microorganismes. French Patent Demand, FR 1556456, 2015.

I. Hoffmann
(College 9 Secretary)

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