African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

Quality of Black Teas in Indian market

Ch. Someswararao
  • Ch. Someswararao
  • Agricultural and Food Engineering Department, Indian Institute of Technology, West Bengal 721302, India.
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P. P. Srivastav
  • P. P. Srivastav
  • Agricultural and Food Engineering Department, Indian Institute of Technology, West Bengal 721302, India.
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H. Das
  • H. Das
  • Agricultural and Food Engineering Department, Indian Institute of Technology, West Bengal 721302, India.
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  •  Accepted: 07 February 2013
  •  Published: 15 February 2013

Abstract

 

Tea (Camellia sinensis) is the second most popular consumed drink in the world after water. Tea has numerous medicinal benefits mainly due to its antibacterial and antioxidant properties. In this study, the levels of Theaflavin (TF), Thearubigin (TR), high polymerized substances (HPS) and total polyphenols (TPP) of different tea brands found in Indian market were determined using UV/Vis spectrophotometric methods. Four brands of black teas were selected [Tata tea (CTC), Red label tea (CTC), Lipton Darjeeling tea (orthodox, Meri Chai and (CTC tea bag)]. Among the different market teas Lipton Darjeeling (orthodox) tea was found to have greater amount of 19.57% polyphenols and Darjeeling tea was found to have the highest aroma index of 15.9.

 

Key wordsCamellia sinensis, Red label tea CTC tea, orthodox tea, polyphenols, aroma index.