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Investigation On The Occurence Of Heavy Metals In Yoghurt Sold
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The presence
of the most undesirable elements in foods can usually be attributed to
any of the following causes:
· Natural occurrence e.g. deposition in the liver of animals.
· Sprays used as insecticides during cultivation e.g. Lead arsenate.
· Accidental contamination due to confusion of materials of similar appearance.
·
Food may dissolve metals from the equipment and containers e.g. from
Tin plate, foils, solders galvanized iron and cheap enamels and glazes.
Fermented dairy products such as yoghurt are among the recreational
drinks taken paramount to boost appetite and could also be taken at
leisure. Yoghurt is a fermented milk product, which has its origin in
Eastern Europe, but it is now consumed throughout the world. The French
called it “milk of eternity†as it was believed to have therapeutic
powers and gave life to those who consumed it.
Yoghurt is about the
most consumed milk product in Lagos State which may partly be accounted
for by the fact that, it is the most readily available milk product and
since cheese is difficult to come by in Lagos unlike the
other parts
of the country. In the above sense the investigation of heavy metals
should be a paramount and essential topic. Because the toxicity of the
heavy metals such as Lead causes miscarriage in pregnant women, sudden
and infant death syndrome and stillbirth. (Boekx, 1986). The increase
in Lead in the body is also known for its devastating effects on brain
development (Bryee – Smith and Stephenes, 2001). Chromium causes kidney
and liver damage and Cadmium also causes renal problem, anaemia and
reproductive failure. (Murthy and Reha 2001). Heavy metals such as
Lead, Cadmium and Chromium have been recognized to be potential toxic
within specific limiting values, a considerable potential hazard exit
for human nutrition.
The metals are useful to man, but their
usefulness depends on the chemical specification for examples their
salts could be used as preservatives, disinfectants, fumigant and so on
in the industries producing yoghurt.
1.1 AIMS AND OBJECTIVE
· To detect the occurrence of heavy metals, Lead, Chromium, Cadmium contaminating yoghurt sold in Lagos market.
· To determine the concentration of these heavy metals in yoghurt sold in Lagos market.
· To give review on the health implication of these heavy metals at high concentration.
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ABSRACT - [ Total Page(s): 1 ]24 samples of different brands of yoghurt were collected from 2 popular Lagos market and Atomic Absorption Spectrophotometer was used for the determination of heavy metals i.e. Lead, Cadmium and Chromium. 100% of the samples were found to have the concentration of heavy metals below the safe limit recommended by world health Organization (WHO). The concentration of Lead, Cadmium and Chromium fall between 0.52ppm – 0.92ppm, 0.14ppm – 0.49ppm and 0.26ppm – 0.75ppm respec ... Continue reading---
