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Pak. J. Bot., 45(3): 901-907, 2013. |
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Updated: 30-05-13 | ||||
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CHEMICAL COMPOSITION AND SENSORY EVALUATION OF TEA (CAMELLIA SINENSIS) COMMERCIALIZED IN PAKISTAN
MUHAMMAD ADNAN1, ASIF AHMAD1, ANWAAR AHMED1, NAUMAN KHALID2, IMRAN HAYAT1 AND IFTIKHAR AHMED*3
Abstract: The quality of black and green commercial tea samples was accessed by physicochemical analysis, mineral analysis and sensory evaluation. Significant variations in physicochemical and organoleptic parameters were observed. The moisture, protein, fat, crude fiber, water extracts and ash contents of the commercial tea samples were found to be in the range of 2.46-7.47, 0.87-1.141, 0.94-2.15, 11.23-17.21, 32.34-53.61, and 3.29-5.86%, respectively while caffeine and catechin were found in the range of 2.34-4.33% and 0-7.44%, respectively. The highest percentage of moisture, protein, fat, and crude fiber contents were observed in green tea samples while highest percentage of ash and water extracts were observed in black tea samples. Calcium, magnesium, sodium, potassium and manganese were found to be in the range of 1.47-3.84 mg/l, 2.97-5.66 mg/l, 0.39-1.83 mg/l, 3.01-4.00 mg/l., 1.09-2.43 mg/l, respectively with maximum amounts found in green tea as compared to black tea.
1Department of Food Technology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, Pakistan 2Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, 113-8657, Tokyo, Japan 3*National Institute for Genomics & Advanced Biotechnology (NIGAB), National Agricultural Research Centre (NARC), Park Road, Islamabad-45500, Pakistan *3Corresponding author e-mail: iftikharnarc@hotmail.com; Phone: +92-51-844 3706, Fax: +92-51-9255 502 |
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