PRODUCTION OF MILK OF LOW BACTEEIAL CONTENT. 



47 



condition 3, which when fresh averaged approximately 136,000 

 bacteria per cubic centimeter, when held for 48 hours at 10° C. 

 (50° F.) its average count would be approximately 13,000,000. The 

 difference in count would be of great importance if an attempt were 

 being made to market a milk of low bacterial content. 



T\ble 20. — Growth of bacteria in milk produced under condition 1 when held 

 at h-h\ 10°, and 15.5° C. (J f 0°, 50°, and 60° F.). 



Sample No. 



Temper- 

 ature. 



Fresh. 



24 hours. 



48 hours. 



72 hours. 



96 hours. 



1 



, 4.4° C 

 f40°F.). 



f 3, 500 

 6,900 

 3,400 

 7,400 

 4,700 

 5,300 

 7,300 

 3,300 

 9,400 

 3,900 

 3,900 

 4,200 

 4,700 

 1,600 

 3,400 

 2,200 

 2,900 

 1,400 

 3,400 



. 2, 100 



2,500 

 7,700 

 3,700 

 7,100 

 5,900 

 3,300 

 5,300 

 ' 4,200 



3,300 

 7,300 

 3, 800 

 6,200 

 5,300 

 2,900 

 4,500 



14, 400 

 8,900 

 4,100 

 4,100 

 4,200 



11,600 



21,100 



2 



13,100 



3 



3,400 



4 



3,500 





16, 000 



6 





7 



8,500 



8 



3,400 

 11,800 

 5,400 

 10, 100 

 9,300 

 5,200 

 3,800 

 40,500 

 2,200 



7,600 



9 



11,400 

 3,900 

 5,300 

 4,700 

 4,800 

 2,500 

 6,900 

 2,300 

 3,200 



21,000 



10 



4,100 

 7,400 

 3,500 

 4,300 

 2,300 

 3,800 

 2,400 

 2,600 

 1,700 





11 



18, 200 



12 



22, 600 



13 



6,500 



14 



23,400 



15 



109, 000 



1G 





17 



21,000 



18 



6,100 

 2,500 

 4,100 



18, 000 



19 



1,600 

 2,300 



2,200 



20 



2,700 













4,295 



4,138 



4,506 



8,427 



19, 693 







1 



10° c. 



(50° F.). 



3,500 

 6,900 

 3,400 

 7,400 

 4,700 

 5,300 

 7,300 

 3,300 

 9,400 

 3,900 

 3,900 

 4, 200 

 4,700 

 1,600 

 3,400 

 2,200 

 2,900 

 1,400 

 3,400 

 2, 100 



6,400 

 14, 400 

 5,800 

 8,900 

 10, 800 

 6,100 

 5,100 

 . 4, 700 



8,200 

 55,600 

 26,000 

 35,000 

 33, 000 

 510,000 

 22, 000 



4,500,000 

 3,760,000 

 570,000 

 260,000 

 8,700,000 

 6,400,000 



34,800,000 

 96, 000, 000 

 13, 300, 000 



2 



3 



4 



19, 300, 000 



5 



' 43, 500, 000 



C 





6, 700, 000 



8 



180,000 



90,000 



1,440,000 



5,100,000 



39,000,000 



1,260,000 



1,150,000 



31,000,000 



190, 000 





9 



28, 000 



18,500 



7,200 



900, 000 



205,000 



71,000 



280, 000 



13,600 



42,000 



4, 100, 000 



10 



5,900 



8,100 

 41,200 

 20,200 

 18, 200 

 65,000 



5,200 

 12, 700 



6,400 



11 



95,000,000 

 212, 000, 000 

 14, 200, 000 

 20, 200, 000 

 55, 000, 000 



12 



13 



14 



15 



16 





17 



12, 200, 000 



18 



190, 000 

 95, 000 

 170, 000 



1,400,000 

 3, 600, 000 



19 



28,000 

 16,000 



20 



6,200 













4,295 



13,961 



127,727 



5,725,277 



39, 490, 625 







1 



2 



15.5° C 

 (60° F.). 



f 3,500 

 6,900 

 3, 400 

 7,400 

 4,700 

 5,300 

 7,300 

 3,300 

 9,400 

 3,900 

 3,900 

 4,200 

 4,700 

 1,600 

 3,400 

 2,200 

 2,900 

 1,400 

 3,400 

 2, 100 



1,250,000 



1,300,000 



160, 000 



156,000 



10,200,000 



1,010,000 



310, 000 



55,000 



74,000,000 

 42,500,000 

 13, 200, 000 

 20,600,000 

 31,800,000 

 28,200,000 

 18,900,000 



265,000,000 

 170,000,000 

 87,000,000 

 172, 000, 000 

 1,550,000,000 

 242, 000, 000 



' 4,240,000,000 



3 



4 



208, 000, 000 

 1,180,000,000 

 2, 100, 000, 000 



6 





7 



149, 000, 000 

 106, 000, 000 



8 



74,000,000 



71,000,000 



248,000,000 



750,000,000 



1,640,000,000 



112,000,000 



22, 000, 000 



152, 000, 000 



112,000,000 



9 



5,800,000 

 14,800,000 

 63,000,000 

 85,000,000 

 23, 100, 000 

 17, 300, 000 

 97, 100, 000 

 24,900,000 

 14,500,000 



152,000,000 



10 



270,000 



1,220,000 



1,580,000 



240, 000 



74, 000 



10,100,000 



102, 000 



110,000 



105,000 



11 



910,000,000 



12 : 



13 



276, 000, 000 



14 



1,490,000,000 

 2,040,000,000 



15 



16 



17 



270, 000, 000 



18 



59,000,000 

 64,000,000 

 87,000,000 



157, 000, 000 



19 



7,900,000 

 11,600,000 



201,000,000 



20 



330,000 







Average 





4,295 



1,587,333 



33,011,111 



326,500,000 



962,785,714 



. 







