Rapid measurement and prediction of bacterial contamination in milk using an oxygen electrode.
An oxygen electrode was used to measure oxygen consumption to determine bacterial contamination in milk. Dissolved oxygen (DO) measured at 10-35 degrees C for 2 hours provided a reasonable prediction efficiency (r > or = 0.90) of the amount of bacteria between 1.9 and 7.3 log (CFU/mL). A temperature-dependent predictive model was developed that has the same prediction accuracy like the normal predictive model. The analysis performed with and without stirring provided the same prediction efficiency, with correlation coefficient of 0.90. The measurement of DO is a simple and rapid method for the determination of bacteria in milk.
Numthuam
Sonthaya
S
University of Tsukuba, Ibaraki, Japan.
Suzuki
Hiroaki
H
Fukuda
Junji
J
Phunsiri
Suthiluk
S
Rungchang
Saowaluk
S
Satake
Takaaki
T
D000818:Animals; D001419:Bacteria / Q000254:growth & development / Q000302:isolation & purification*; D015374:Biosensing Techniques / Q000379:methods*; D015169:Colony Count, Microbial / Q000379:methods*; D004553:Electric Conductivity; D004566:Electrodes; D005506:Food Contamination / Q000032:analysis*; D005516:Food Microbiology; D006801:Humans; D008892:Milk / Q000382:microbiology*; D008954:Models, Biological; D010084:Oxidation-Reduction; D010100:Oxygen / Q000032:analysis*; D011237:Predictive Value of Tests; D013696:Temperature
D010100:Oxygen