@article{(Open Science Index):https://publications.waset.org/pdf/16886,
	  title     = {Caffeine Content Investigation in the Turkish Black Teas},
	  author    = {E. Moroydor Derun and  A. S. Kipcak and  O. Dere Ozdemir and  F. Demir and  M. Karakoc and  S. Piskin},
	  country	= {},
	  institution	= {},
	  abstract     = {Tea is a widely consumed beverage that contains many components. Caffeine belongs to this group of components called alkaloids contain nitrogen. In this study caffeine contents of three types of Turkish teas are determined by using extraction method. After condensation process, residue of caffeine and oil are obtained with evaporation. The oil which is in the residue is removed by hot water. Extraction process performed by using chloroform and the crude caffeine is obtained. From the results of experiments, caffeine contents are found in black tea, green tea and earl grey tea as 3.57±0.43%, 3.11±0.02%, 4.29±0.27%, respectively. Caffeine contents which are found in 1, 5 and 10 cups of tea are calculated. Furthermore, the daily intake of caffeine from black teas that affects human health is investigated.
},
	    journal   = {International Journal of Chemical and Molecular Engineering},
	  volume    = {7},
	  number    = {9},
	  year      = {2013},
	  pages     = {708 - 711},
	  ee        = {https://publications.waset.org/pdf/16886},
	  url   	= {https://publications.waset.org/vol/81},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 81, 2013},
	}