Powdered lyophilised fermented milk is - dered yoghurt reconstitutable with water

摘要

Milk is fermented to an acidity of less than 10 g. but more than 7.5 g. lactic acid/l., pref. to an acidity of 8-9.5 g. lactic acid/l., frozen at -23 degrees C to -30 degrees C in 30-60 min.; water from the frozen milk sublimed at -23 degrees C to -30 degrees C under vacuum, pref. at -23 degrees C to -28 degrees C/0.2-0.5 mm Hg press and the residue desorbed under vacuum at 10-60 degrees C, pref. 30-50 degrees C/0.2-0.3 mm Hg press. The final residue contains not more than 3% moisture. The powdered product is easily reconstituted with water.