Detection of Stress Hormone in the Milk for Animal Welfare Using QCM Method

Figure 4

QCM responses on the sample injection and regeneration. The sample contained 10 vol% of plain milk and 2.5 µg/mL of the tracer (BSA coupled with cortisol) in PBS. 4 mM glycine-NaOH solution was used for the regeneration. The surface treatment of (e) in Table 1 was applied.