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Metal contents of some cocoa beans produced in Ondo State, Nigeria
Author(s) -
Olaofe Olorunfemi,
Oladeji Eunice O.,
Ayodeji Omotunde I.
Publication year - 1987
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.2740410306
Subject(s) - magnesium , zinc , atomic absorption spectroscopy , potassium , manganese , chemistry , sodium , copper , metal , food science , calcium , zoology , nuclear chemistry , biology , physics , organic chemistry , quantum mechanics
The metal contents in 11 cocoa samples collected from different parts of Ondo State, Nigeria, were determined by the use of atomic absorption spectrophotometry. The moisture and ash contents of the samples were in the range 2.0–3.2% and 2.0–3.8%, respectively, the means being 2.5% and 2.9%, respectively. The mean contents of calcium, magnesium, potassium, sodium, manganese, iron, copper and zinc were 25.5, 5170, 2480, 21, 17, 15.8, 8.2 and 62 μg g −1 , respectively of cocoa bean as purchased. Magnesium was present at much higher levels than the other metals. In some cases the difference between the mean metal content of samples was significant.