SUPERCRITICAL AND CATALYTIC FLUID EXTRACTIONS OF TEA WASTES

Air dried and ground tea waste was subjected to supercritical and cata lytic fluid extraction by using water or acetone as solvent at differe nt temperatures. The most important reactions variables were temperatu re and ratio of catalyst to the solid sample. The yields of the cataly tic fluid reaction have been increased from 70.3 % to 93.4 % as the te mperature increased from 230 degrees C to 340 degrees C by using water as solvent. The yield of extract was obtained from non catalytic supe rcritical water extraction was about 50.0 % at 380 degrees C.