2.3.5. Thermal pasteurisation
The product was pasteurised using a tubular heat exchanger
(Model No. FT74T, Armfield, Ringwood, UK) with the temperature
of the holding tube set at 72 C, a residence time of 26 s and a
come-up time of 3.5 min.
Before and after use, all equipment was thoroughly flushed with
water and cleaned for 20 min with a 2% w/v NaOH solution. After
rinsing with water, a 5% (v/v) hypochlorite-based solution (Milton)
was passed through each device for 15 min for disinfection purposes,
followed by a final rinse with water.