title: Obtaining of caffeine from Turkish tea fiber and stalk wastes.
abstract: The aim of this study was to find a cheap method to obtain caffeine. Experiments were performed on fiber and stalk wastes of Turkish tea plants that had no economical value other than being used merely as low grade fuel and fodder. Tea stalks and fiber were obtained from tea factories. Parameters affecting caffeine extraction from tea wastes were determined to be, mixing rate, water/tea ratio, temperature, time and particle size. The maximum yields by dried mass from the tea fibers and stalks were 1.16% and 0.92%, respectively.
authors.affiliation: Gazi University, Engineering and Architectural Faculty, Chemical Engineering Department, Ankara 06570, Maltepe, Turkey. mguru@gazi.edu.tr
authors.forename: M
authors.initials: M
authors.lastname: Gürü
authors.forename: H
authors.initials: H
authors.lastname: Içen
mesh_terms: D002110:Caffeine / Q000302:isolation & purification*; D028241:Camellia sinensis / Q000737:chemistry*; D010316:Particle Size; D010936:Plant Extracts / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry*; D013662:Tea; D013696:Temperature; D013997:Time Factors; D014421:Turkey; D014866:Waste Products / Q000032:analysis*; D014867:Water / Q000737:chemistry
chemical_list: D010936:Plant Extracts; D013662:Tea; D014866:Waste Products; D014867:Water; D002110:Caffeine