Supercritical fluid extraction of plant flavors and fragrances

Molecules. 2013 Jun 19;18(6):7194-238. doi: 10.3390/molecules18067194.

Abstract

Supercritical fluid extraction (SFE) of plant material with solvents like CO₂, propane, butane, or ethylene is a topic of growing interest. SFE allows the processing of plant material at low temperatures, hence limiting thermal degradation, and avoids the use of toxic solvents. Although today SFE is mainly used for decaffeination of coffee and tea as well as production of hop extracts on a large scale, there is also a growing interest in this extraction method for other industrial applications operating at different scales. In this review we update the literature data on SFE technology, with particular reference to flavors and fragrance, by comparing traditional extraction techniques of some industrial medicinal and aromatic crops with SFE. Moreover, we describe the biological activity of SFE extracts by describing their insecticidal, acaricidal, antimycotic, antimicrobial, cytotoxic and antioxidant properties. Finally, we discuss the process modelling, mass-transfer mechanisms, kinetics parameters and thermodynamic by giving an overview of SFE potential in the flavors and fragrances arena.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Biotechnology
  • Flavoring Agents / chemistry*
  • Flavoring Agents / microbiology
  • Oils, Volatile / chemistry*
  • Oils, Volatile / pharmacology
  • Plant Extracts / chemistry
  • Plants / chemistry*

Substances

  • Flavoring Agents
  • Oils, Volatile
  • Plant Extracts