Table 1. Determination of cut-off values for alkaline phosphatase in heat-treated cow milk

Samples		Abs (650 nm)	Phenol (μg/mL)1)	Pasteurization adequacy	Cut-off value
Raw milk heat-treated at 63℃ for	0 min	0.841 ± 0.004	171.62 ± 0.85A	Inadequate	2 μg/mL
	10 min	0.517 ± 0.007	102.68 ± 1.49B	Inadequate
	20 min	0.203 ± 0.038	35.77 ± 7.98C	Inadequate
	30 min	0.041 ± 0.001	1.40 ± 0.21D	Adequate
	40 min	0.011 ± 0.002	02)	Adequate