Abstract
The separation of phenolic compounds by supercritical fluid extraction has been widely studied throughout the last two decades. This is evidenced by a number of publications and articles. Supercritical fluid extraction (SFE) has become thus the effective method of separating the mentioned group of compounds. On the other hand, SFE is a beneficial approach in plant waste materials utilization and reduction of environmental burdens caused by the wastes. The aim of the study is to gather and systematize available information on the phenolic compounds separation that have been reported so far as well as to evaluate whether there is one optimal supercritical fluid extraction method for the phenolic compounds.
Highlights
The phenolic compounds are of a great interest for different institutions aimed at the applications of phenolics in food, cosmetics and pharmaceutical industries
Water and supercritical carbon dioxide are all classified as generally recognized as safe solvents (GRAS) [8]
Koubaa et al [9] provide an example of the extraction with hexane as a solvent, obtaining the extract characterized by low phenolic compounds content as a result of low solubility of the phenolic compounds in non-polar solvents
Summary
The phenolic compounds are of a great interest for different institutions aimed at the applications of phenolics in food, cosmetics and pharmaceutical industries. As far as the phenolic compounds are concerned, a number of different extraction techniques has been introduced, with the most frequent being with the use of water and organic solvents (e.g., ethanol, methanol) [6,7]. In the case of the phenolic compounds extraction, extraction method, chemical nature of compounds extracted as well as storage conditions are the crucial factors [14]. Several drawbacks of the conventional methods of the phenolic compounds extraction have been observed, such as low quality of an extract with unsatisfactory extraction yields and economic unprofitability of the methods [7]. According to Panja [10], supercritical fluid extraction has been introduced as an efficient and cleaner method compared to other techniques. Molecules 2018, 23, 2625 supercritical fluid extraction has been introduced as an efficient and cleaner method compared to other techniques.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
