Table 1. Comparative gross composition of sweet/acid whey and buttermilk (3, 17).

w(constituent)/%	Sweet whey	Acid whey	Sweet cream buttermilk
Total solids Fat True protein Lactose Ash (minerals)	6.00 0.05 0.60 4.50 0.50	6.40 0.05 0.60 4.60 0.80	9.80 0.59 3.73 4.81 0.75