Abstract
The process of extraction is well-known and widely used in numerous fields. Until recently, it has been performed in its basic level both in laboratory and industry. However, increased environmental concerns, development of environmental chemistry and wish to get safe products imposed new trends in extract production. The basic goals which have to be achieved are elimination of harmful solvents and increase of extraction yield. Different modern techniques can be used in order to accomplish these aims, but the special focus has been put on these one which rely on “green” solvents, such as subcritical water or supercritical carbon-dioxide. These techniques could be great alternative for the extraction of compounds of different polarity by setting operational parameters i.e. by varying solvent polarity. Obtained extracts do not contain residue of organic/toxic solvents and there is no need for their further purification. This makes such techniques economically acceptable from the industrial point of view. Yet, there is a question, which are the limitation of these techniques? Are they really so good? This review tends to show all advantages and disadvantages of novel extraction techniques and to give the comprehensive overview of all challenges in the process of developing of new environmentally-friendly techniques.
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The author would like to acknowledge the Serbian Ministry of Education, Science and Technological Development (Project no. TR31013) for the funding support of the research project.
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Cvetanović, A. Extractions Without Organic Solvents: Advantages and Disadvantages. Chemistry Africa 2, 343–349 (2019). https://doi.org/10.1007/s42250-019-00070-1
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DOI: https://doi.org/10.1007/s42250-019-00070-1