Bovine Serum Albumin stability in the context of biosensors

The paper presents the impact of external conditions such as: reduced temperature (L), microwave radiation (P), on the stability of Bovine Serum Albumin. As comparison controlled sample was kept in room condition (WP). The protein beyond the wide application in pharmacokinetics and pharmacodynamics drug study, is also widely used in the biosensors construction. In order to study UV-Vis spectroscopy, absorption spectra was taken. The changes with time of the protein in different concentrations (0.25, 0.5, 1, 2, 3, 4) mg / mL was observed. Base on the study, BSA (2mg/mL) was chosen and exposed to different factors (L, P, WP). Absorption spectra monitoring revealed protein changes with time after exposition to different factors. The results showed an increase in absorption, associated with the conformational changes of BSA with time. This effect was more visible for samples with high concentrations (4, 3, 2 mg / mL) than for lower one (0, 25, 0.5, 1mg/mL). Investigation on the protein stability influenced by external factors with time, showed tendency to maintain stability of BSA in low temperature (L) and the trend to accelerate aging of proteins under the influence of microwave radiation. The observed trend of change, under the influence of external factors was more evident with time.