Fig. 3.

– Titration profile showing the millimolar rate of addition of sodium hydroxide to digesting full fat milk, low fat milk and buffer containing no milk fat in the absence and presence of drug (Hf) to maintain the pH at 6.5. All milk titration profiles are the average of three independent digestion measurements with associated error bars (= standard deviation) and the buffer only (Tris) digestion was performed only once.