STIRRING CONTINUOUS EXTRACTION OF AQUEOUS ORGANIC-COMPOUNDS WITH FLUORORESIN AS A WATER ORGANIC-SOLVENT SEPARATOR

A stirring continuous-extraction apparatus equipped with a fluororesin in a water/extracting solvent separation chamber was designed to isolate solvent-extractable material from foods and beverages rapidly and to destruct the forming emulsion. The new apparatus was evaluated by experiments with dilute aqueous solution of several model mixtures of volatile compounds. A comparison study of the extraction efficiency has been made for the following three methods: stirring continuous, continuous, and batch extraction. The stirring continuous extraction has equivalent or better extraction efficiency than the other extraction methods for all the compounds tested. Most of the compounds showed nearly quantitative extraction after 2 h. This method has been successfully applied to the separation of flavors from wine. © 1990, American Chemical Society. All rights reserved.