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Analysis of mineral composition of some Assam and Darjeeling black teas
Author(s) -
Kalita Jatindra N,
Mahanta Pradip Kr
Publication year - 1993
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740620202
Subject(s) - black tea , chemistry , composition (language) , mineral , green tea , horticulture , food science , botany , biology , art , literature , organic chemistry
Black teas manufactured in Darjeeling and Assam were analysed for various macrominerals such as P, K, Ca, Mg and microminerals such as Mn, Fe and Cu. A considerable amount of minerals, eg K (40‐46 mg), Mg (2.7‐3.0 mg), Ca (0.48‐0.66 mg) and traces of Mn (0.28‐0.40 mg), Fe (0.16‐0.20 mg), P (29‐41 μg) and Cu (12‐22 μg) were found in a cup of black tea brew. Black teas manufactured from the leaf coming from a pruned section and fine portion usually showed higher mineral content than tea manufactured from unpruned sections and coarse grade teas of Darjeeling. Assam CTC tea was found to be richer in mineral content compared to Darjeeling orthodox tea.