Abstract
Seventeen marketed brands of black tea of Bangladesh (viz; Seylon, Tetley, Duncan, National, Fresh, Teer, Finlay, Starship, Ispahani, Cosmo, Magnolia, Danish, Shaw Wallace, Pusti, Kazi & Kazi, HRC and Lipton Taaza tea) randomly collected from the local supermarkets were evaluated for minerals as well as nutritional status. The experiment was done in 2015, 2016 and 2017 for determining the mineral (N, P, K, Ca, Na, Fe) and nutritional (sugar, fat, starch and protein) elements. All the studied parameters were found to vary significantly (P Cosmo> Lipton Taaza> Duncan> Finlay> Ispahani> Magnolia> Shaw Wallace> Seylon> Kazi & Kazi> HRC> Pusti> Danish> Tetley> Teer> Starship> Fresh. The sequence of minerals and nutritional compositions in all the studied brands of tea followed the sequence of price. The market price of all the studied brands of tea was found to be changed positively with the mineral and nutritional status.
Highlights
Tea (Camellia sinensis) is second in line after water under popular beverages due to its phenomenal taste and outstanding benefits towards health [1]
Nitrogen content was investigated in seven marketed teas of Shaw Wallace brand produced in Bangladesh and nitrogen was found to be maximum in Danadar tea (5.14%) and minimum in Fine Dust tea (4.52%) [30].This result is comparable to the findings of the present experiment
The results indicate that the higher the minerals and nutritional element in the tea of brands was as the higher the price
Summary
Tea (Camellia sinensis) is second in line after water under popular beverages due to its phenomenal taste and outstanding benefits towards health [1]. 5000 years ago, tea was first consumed in China for its medicinal properties, while in current era tea had been widely recognized for health benefits pertaining to increased public awareness of the high flavonoid content of the tea leaves and extracts [2,3]. 80% of the tea consumed is black tea, which is the most popular drink in Europe, North America, and North Africa (except Morocco), whereas green tea is drunk throughout Asia; oolong tea is popular in China and Taiwan [4]. The installment of tea as a profitable crop has been proved successful worldwide [7]. It is cultivated in over 30 countries [8]
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