Supercritical fluid extraction (SFE) in food analysis: a review

摘要

SFE can be a powerful technique in the analysis of food and environmental samples. Problems with ex- traction efficiency can occor when the matrix contains large amounts of water or of substances such as different lipids, which may co-elute with the analytes and impose problems in the subsequent analysis step. Also a high polarity of the target substances can be Problematic. Nevertheless, recent work has shown That these limitations can be overcome by suing a Water adsorbent such as Hydromatrix and/or a fat Retainer as basic alumina in the extractor, and by adding a polar modifier, when unpolar carbon diox- ide is the main extracting fluid.