2.5. Proximate composition of milk and yoghurt
The total solids content of milk was determined according
Richardson (1985)and that of yoghurt according toIDF (1991). The
moisture content of both milk and yoghurt samples were determined by difference (AOAC, 1998Method No. 990.20):
%Moisture¼100Total solidsðTS%Þ
The fat contents of milk and yoghurt were determined using
AOAC (1998)Method No 905.02 and solids-not-fat (SNF) by subtracting percentage of fat from total solids (TS %). Total protein (%
N6.38) and ash contents were determined as described inAOAC
(1998)Methods No. 991.20 and No. 945.46, respectively.