National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Tea is receiving increased interest from scientists due to its biological properties and the presence of bioactive substances like polyphenols which give nutraceutical values to well brew cup of tea. The study was carried out as a prerequisite to evaluate the therapeutic potential of green tea. The antioxidant potential of Kangra tea in terms of metal ions chelation was determined. Ferrous ions chelation potential of tea powders (in terms of IC50 (Fe2+) values) was in between the IC50 (Fe2+) values of EDTA and citric acid. The IC50 (Fe2+) exhibited a correlation with TC and flavanols. A comparative TLC (Thin layer chromatography) bioautograph study between aqueous solutions of standard catechins (0.5 mg mL-1) and tea powder (1 mg mL-1) indicated that EGCG was one of the active components present in tea solution which might be responsible for antibacterial activity of Kangra tea. Growth inhibition of bacterial pathogens (B. cereus and S. aureus) by aqueous solution of tea powder was found to be influenced by the addition of ferrous ions which suggest that the antibacterial activity of tea catechins could be due to their ability to chelate ferrous ions, indicating that this activity is bacteriostatic rather than bactericidal in nature.
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