PHYSICOCHEMICAL AND PHYTOCHEMICAL EVALUATION OF DIFFERENT MARKETED BRANDS OF BLACK TEA

Abstract

The objectives of present study were extraction, physicochemical standardization, phytochemical evaluation (qualitative tests) and chemical tests for detection of inorganic elements in different black tea brands. Brands selected for the study Anand Special, Marvel Rojana, Marvel Glory had foreign matter (0.50%, 0.53%, 0.51%) respectively. Water soluble extractive values were 25%, 28%, 22% in Anand Special, Marvel Rojana, Marvel Glory respectively. Moisture contents were 0.5%, 5.2%, 1.3% in Anand special, Marvel Rojana, Marvel Glory respectively. Inorganic contents were found as printed on label. On phytochemical screening it was found that all three brands were positive for the presence of carbohydrate, protein, amino acids, alkaloids and flavonoids.