Calcium and other vitamins and minerals in
milk make it an important part of a healthful diet for people of all ages. The
benefits of drinking milk include strengthening bones, improved cardiovascular
and oral healthand even relief from PMS.But with the appearance of adulterated
milk, it become a threat of our health,especially for infants. How to Identify adulterated milk is a topic many
people are deeply concerned with.The following is a research from scientificresearch publishing about the identification of Calcium and Sodium Behavior to
Identify Milk Adulteration:
A fast and direct method for determination
of milk adulteration by monitoring of calcium and sodium concentrations
variations was described. Milk samples were furnished by a dairy company
located at São Carlos (São Paulo State, Brazil) and and spiked with tap-water,
whey, hydrogen peroxide, synthetic urine, urea and synthetic milk in the ranged
from 5% to 50% (v/v), expect for caustic soda. Caustic soda was added in the
milk until establish the original pH. The milk samples were analyzed by using
flame atomic absorption spectrometry (FAAS) and no acid digestion process was
required. Results showed a significant decrease in the Na and Ca concentrations
with addition of synthetic milk and tap-water, a nonlinear variation with
addition of synthetic urine, whey and hydrogen peroxide and a largest increase
in the Na concentration with addition of NaOH. Correlation between Na and Ca
concentrations in pure and adulterated milk were evaluated by paired t-test at
a 95% confidence level. Results showed that the method proposed is efficient to
identify samples adulterated with tap-water, caustic soda, synthetics milk and
urine.
This research applies Flame Atomic
Absorption Spectrometry,maybe it is more useful for research worker.
Read and download < Study of Calcium andSodium Behavior to Identify Milk Adulteration Using Flame Atomic AbsorptionSpectrometry > for more details .
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