ABSTRACT
Extraction of health-promoting components from raw materials has usually been accomplished by conventional extraction processes such as solid-liquid extractions, employing organic solvents such as methanol, ethanol, acetone, or hexane, and also through steam distillation. An additional process to evaporate these solvents from extracts is required when organic solvents are used, and the disposal of the efuent raises environmental and safety concerns. There is increasing public awareness of the hazards associated with the use of organic solvents in food processing with regard to the possible contamination of the nal products.
