All yoghurts were formulated to contain 4.5% protein and 0.1%
fat. The yoghurt milkwas reconstituted from 491 g of low heat skim
milk powder (Arla Foods, Viby, Denmark) dissolved in 3 L demineralized
water using a Silverson L5M-A Laboratory Mixer and hydrated overnight at 4 C in
stainless steel buckets. The hydrated yoghurt milk was pasteurized
on the next day at 90 C for 20 min in a water bath and cooled to