Abstract
ANTIOXIDANT ACTIVITY OF DIFFERENT TEA SAMPLES

Charitha G. S., Ramesh C. K.*, Sathisha G. J.1, Sameera Parveen, Pallavi M. and Jamuna K. S.

ABSTRACT

Tea, Camellia sinensis is one of the most popular beverages consumed worldwide as green, black or Oolong tea. The present study was carried out to evaluate the antioxidant potential of commercially available seven different tea samples, green tea plain and formulated teas viz. green tea lemon, green tea tulsi, green tea mint, branded black tea, unbranded black tea and green tea of Chinese origin. Aqueous extracts of the all the tea samples were evaluated for the qualitative phytochemical screening and assayed for their antioxidant activities viz. DPPH, Nitric Oxide radical scavenging assay, Reducing power and Total Antioxidant capacity. The results of qualitative phytochemical screening revealed the presence of several bioactive compounds. The antioxidant activities of all the seven tea samples showed the different tea extracts manifesting varying antioxidant potentials. Further, among the extracts under study green tea tulsi (GTT) and green tea plain (GTP) has exhibited comparitively higher antioxidant activity followed by GTL, GTM, CGT, BT and UBBT. The results on the antioxidant potentiality of different tea samples are discussed.

Keywords: Tea, Phytochemicals, Antioxidant activity.


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