3utterfat 
Proteids 
Lactose 
Ash 
Acidity 
Water 
Drikp BUTTERMILK AND Drikp WHEY 331 
Composition of Buttermilk Powder. 
Fresh buttermilk 
1.17 per cent 
3.00 per cent 
2.97 per cent 
85 per cent 
60 per cent 
91.63 per cent 
Buttermilk powder 
11.70 per cent 
36.24 per cent 
35.50 per cent 
8.25 per cent 
6.00 per cent 
4.32 per cent 
Total 100.22 per cent 102.01 per cent 
''The buttermilk of which the composition is shown in the above 
table was made at the plant of the Buffalo Foundry and Machine 
writer. The 
Company, Buffalo, N. Y., under the supervision of the 
machine used was of the Buflovak type. The buttermilk was fur- 
nished by Schlosser Bros., of Frankfort, Indiana. This batch of 
buttermilk happened to be abnormally high in butterfat ; therefore 
About thirty 
pounds of steam pressure were used in the drying drum, the tem- 
the large butterfat content of the finished product. 
perature in the vacuum chamber was 125 degrees F. and the vacuum 
twenty-five to twenty-six inches of the mercury column. 
This buttermilk powder had a nice, clean, acid taste, it was 
much relished by all who sampled it and, when fed to chickens for 
fattening, produced satisfactory gains in weight. 
The annual production of buttermilk in the United States was 
4,341,157 pounds in 1918 and 5,278,827 pounds in 1919. 
The chief obstacle to extensive production of buttermilk pow- 
der hes in the fact that the manufacturing cost involved in reducing 
buttermilk to dryness is very high in proportion to the market valuc 
of the finished product, when used for hog and chicken feeding. 
3uttermilk powder can be manufactured by any of the processes 
described under the manufacture of milk powder. However the 
spray process is not as well suited for the desiccation of buttermilk 
as is the film, or roller process. 
In the spray process there is a considerable tendency for the 
milk to clog the spray nozzles. Again, the cost of manufacture by 
the spray process is greater than that by the film process. As 
stated under the manufacture of milk powder, heat in the form of 
1 Wunziker, Indiana Agricultural Experiment Station, Twenty-sixth An- 
nual Report, 1915. 
