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Study of microbial contents and Determination of some heavy metal in commercial brands of black tea and green tea | ||
| Kufa Journal for Agricultural Science | ||
| Article 1, Volume 3, Issue 1, 2011, Pages 250-264 | ||
| Abstract | ||
| Abstract Tea is one of the most popular drinks all over the world .thus, the chemical composition of tea is important because of its close relation to health. Chemical composition and concentration of some elements ex:Pb,Cd and Zn in tow types of tea(green and black) collected from Basrah local markets were studies with seven types(Balabel,Tufaha,colkata(India), Barary and Autor)for black tea and (Lipton(kwzi),Lipton(ALWazah)for green tea .The results showed that the highest value of Moistur,Ash(6.18,6.02%) in black tea (Autor and Tufaha),while lowest values (3.70,5.16%) in green tea Lipton(Kwzi) respectively. Highest value of protein and fat for black tea Colkata and green tea Lipton ( AL-Wazah) (15.65,2.32%) and lowest values (12.04,1.12%) were in black tea(Balabel and Tufaha)respectively. The high rate of Pb concentrations(2.290 µg/g) was found in the black tea (Barary),while least amount of Pb was (1.698µg/g) recorder in green tea Lipton(Kwzi) respectively.The results showed that their is same amount in black tea (Autor,Balabel) (2.211µg/g) also black tea(Tufaha and colkata) and green tea Lipton (AL-wazah) (1.777µg/g). but about Cd value was found zero in all samples black tea and green tea.where as the high rate of Zn concentration was( 0.089µg/g) for green tea Lipton (kwzi) and the lower concentration was (0.061µg/g) for black tea Tufaha also microbiological tests were invistegated including (Total count ,total coliform and yeast and mold)for two types of tea ,it was indicated their wasn’t any count coliform and litle count of bacteria,yeasts and mold appeared . | ||
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