COMPARISON OF DIFFERENT TEA MANUFACTURE METHODS IN TURKEY

* Hamit VANLI              ** Mustafa BİLSEL              ***Muammer SARIMEHMET

      SUMMARY

     In Turkey manufacture of black tea leaves is being done using the classical rolling system since 1940.Rotorvane was used only in Çiftlik Tea Factory in 1979 and Muratlı and Taşçılar Factories in 1984. Besides rolling method, different production methods and various combinations of these were developed and used in tea producing countries.

    This study aims to define the most suitable production method for our country considering the quality and capacity, using the existing machinery and combination of the two production methods (rolling and rotorvane ) presently used. In the trials, tea leaves bought daily at five purchasing offices belonging to Cumhuriyet Tea Plant  were used.For each combination approximately 2500 kg of leaves were used.

    Trials were run for five production combinations and law of repeating averages , without interfering with the production norm.

    Production combinations used in the trial runs were

a) Plain+Pressed Rolling
b) Plain Rolling + Rotorvane
c) Rotorvane + Plain Rolling
d) Rotorvane + Rotorvane
e) Plain Rolling + Rotorvane + Rotorvane
Oxidation was started with the rolling and breaking of the leaves and was kept constant until drying. Wet  sieving was applied.

   *  Director of Tea Research Intitute,Rize
 **  Head of Chem. Department in Tea Research Institute, Rize
*** Head of Soil Department in Tea Research Institute, Rize
     TUBITAK CAYKUR  The General Directory of Tea Processing Plants, 1987 / RİZE