Evaluation of bacteriological quality in selected commercial infant formulas available in Poland and Egypt
2002
El-Sayed Mostafa, U. | Filipiak, M. | Stryjakowska-Sekulska, M.
One hundred samples of commercial infant formula bought in shops in the Poznan region (Poland) and Cairo region (Egypt) were investigated. Samples were analyzed for aerobic plate counts (APC), total Bacillus cereus (TBC), and incidences of Bacillus spp. and coliforms. The mean APC and TBC did not show any important variation with country, being practically the same in products bought in Poland and Egypt. All commercial infant formula analyzed immediately after opening were of satisfactory bacteriological quality, exhibiting APC lower than 10(4) CFU g(-1) (mean 4.9 X 10(2)) and TBC lower than 10(3) CFU g(-1) (mean 1.1 X 10(2)). However, 60% of the examined fruit juice and ready-to-feed infant formula presented TBC above the recommendation safety limit after storage at 22C for 72 h and at 35C for 48 h. In most cases the mean log APC and TBC were highest (P > 0.05) for fruit juice and ready-to-feed infant formula stored at elevated temperature (35 +/- 1C).
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