Journal of Food Technology in Africa

Log in or Register to get access to full text downloads.

Remember me or Register

Sensitivity of the improved Dutch tube diffusion test for detection of antimicrobial residues in Kenyan Milk.

A. Shitandi


The sensitivity of the improved two-tube test for detection of antimicrobial residues in Kenyan milk was investigated by comparison with the commercial Delvo test SP. Suspect positive milk samples (n =244) from five milk collection centers, were analyzed with the improved two-tube and the commercial Delvo SP test as per manufacturer, weekly over a ten-week period. The 't' test statistic was utilised based on the hypothesis: H0: Ud = 0 (U2 - U1 = Ud) and Ha: Ud > 0 (one-sided test) to analyse the results. The t calculated was compared to the tabulated t value at p = 0.05 for ten degrees of freedom. The results suggest that the improved two-tube test has some improved effect on the sensitivity for antimicrobials residues in comparison to the commercial Delvo test. Utilizing the improved two-tube test could lead to an improvement in sensitivity for antimicrobial residues.

The Journal of Food Technology in Africa Volume 6 Number 1 (January-March 2001), pp. 5-7


milk, antimicrobial residues, Bacillus stearothermophilus var. calidolactis. Maximum residual limits (MRLs), Improved two-tube test.
AJOL African Journals Online