Akşit H., Gözcü S., İsa A., Şimşek S.

INTERNATIONAL TEA CONGRESS "industrial, cultural and economic dimensions", Lankaran, Azerbaijan, 13 - 15 May 2022, pp.212

  • Publication Type: Conference Paper / Summary Text
  • City: Lankaran
  • Country: Azerbaijan
  • Page Numbers: pp.212
  • Erzincan Binali Yildirim University Affiliated: Yes


Tea is one of the most consumed beverages in the world. Turkey is at the top of the world in terms of both tea production and consumption. Tea has a special place in Turkish culture. Especially in the Black Sea Region, where tea is produced, the wastes generated during tea production pose a great danger to the environment. Approximately 75,000 tons of tea waste is generated every year in tea factories in the Black Sea region. Tea wastes contain complex organic molecules such as cellulose, hemicellulose, protein, lipid, polyphenol, and caffeine, as well as many minerals. Caffeine is used as an important raw material in the pharmaceutical and beverage industries. In this study; it is aimed to recover caffeine from powdered waste obtained from the water recovery process used during tea production in tea factories. According to HPLC-UV analysis, the powdered solid waste contains %1.6 caffeine. To recover caffeine, the wastes were extracted in hot water. The unsoluble parts were removed by filtration. The water extract was partitioned by dichloromethane and then evaporated to dryness. The residue was crystallized in dichloromethane: acetone (3:1) the chrystals were filtered off. The caffeine was obtained as an amorphous solid 1.2 g of caffeine was recovered from 100 g of waste. Tea waste, which is a very valuable raw material, causes great environmental problems because it is thrown into the environment or garbage without being evaluated. It is important to transform tea waste into an economic asset and into an economically useful product. It is important to transform tea waste into an economic asset and into an economically useful product. In this study, it is recommended to use tea waste for the recovery of caffeine, and large-scale studies can provide both the production of caffeine and the evaluation of waste.