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Journal of Chemistry
Volume 2015, Article ID 597140, 14 pages
http://dx.doi.org/10.1155/2015/597140
Review Article

Supercritical Algal Extracts: A Source of Biologically Active Compounds from Nature

1Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland
2Faculty of Chemistry, Opole University, Plac Kopernika 11, 45-040 Opole, Poland
3Supercritical Extraction Department, New Chemical Syntheses Institute, Aleja Tysiąclecia Państwa Polskiego 13a, 24-110 Puławy, Poland
4Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
5Department of Hydrobiology, Faculty of Biology, Adam Mickiewicz University in Poznań, Umultowska 89, 61-614 Poznań, Poland
6Department of Dentofacial Orthopeadics and Orthodontics, Medical University of Wrocław, Krakowska 26, 50-425 Wrocław, Poland

Received 9 May 2015; Accepted 28 June 2015

Academic Editor: Iciar Astiasaran

Copyright © 2015 Izabela Michalak et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The paper discusses the potential applicability of the process of supercritical fluid extraction (SFE) in the production of algal extracts with the consideration of the process conditions and yields. State of the art in the research on solvent-free isolation of biologically active compounds from the biomass of algae was presented. Various aspects related with the properties of useful compounds found in cells of microalgae and macroalgae were discussed, including their potential applications as the natural components of plant protection products (biostimulants and bioregulators), dietary feed and food supplements, and pharmaceuticals. Analytical methods of determination of the natural compounds derived from algae were discussed. Algal extracts produced by SFE process enable obtaining a solvent-free concentrate of biologically active compounds; however, detailed economic analysis, as well as elaboration of products standardization procedures, is required in order to implement the products in the market.