terms of different MBRT is shown in Fig. 2. The probe
output voltage increased over time with a decrease in the
blue color of dye due to oxygen depletion by the bacteria
present in raw milk sample. However, the whiteness of
raw milk samples showed discernible differences initially.
These differences in the appearance of the milk
persisted even after the addition of methylene blue dye
in raw milk causing the initial output voltage of the LSP
to vary. Thus it was necessary to normalize the values of