ABSTRACT
Many new consumer trends have emerged in recent times. Accordingly, there is a growing concern for the quality, safety, and toxicity of foods and medicines accompanied by a greater preference for “natural” substances. A major technology that has emerged for the production of “natural” and solvent-free substances is supercritical uid (SCF) extraction technology (Mukhopadhyay, 2000). In 1978, the rst industrial-scale SCF extraction plant was commissioned in Germany by Hag AG. The plant was for the decaffeination of green coffee beans. In 1980, Carlton United Breweries of Australia developed a process for the extraction of avors from hops (Palmer and Ting, 1995).
