DRIED BUTTERMILK AND DRIED WHEY 331 



Composition of Buttermilk Powder. 



Fresh buttermilk Buttermilk powder^ 



Butterfat 1.17 per cent 11. 70 per cent 



Proteids 3.00 per cent 36.24 per cent 



Lactose 2.97 per cent 35.50 per cent 



Ash .85 per cent 8.25 per cent 



Acidity .60 per cent 6.00 per cent 



Water 91.63 per cent 4.32 per cent 



Total 100.22 per cent 102.01 per cent 



1 The buttermilk of which the composition is shown in the above 

 table was made at the plant of the Buffalo Foundry and Machine 

 Company, Buffalo, N. Y., under the supervision of the writer. 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 butterf at ; therefore 

 the large butterfat content of the finished product. About thirty 

 pounds of steam pressure were used in the drying drum, the tem- 

 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 lies in the fact that the manufacturing cost involved in reducing 

 buttermilk to dryness is very high in proportion to the market value 

 of the finished product, when used for hog and chicken feeding. 



Buttermilk 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 Hunziker, Indiana Agricultural Experiment Station, Twenty-sixth An- 

 nual Report, 1913. 



