Detergent and Sanitizer Stresses Decrease the Thermal Resistance of Enterobacter sakazakii in Infant Milk Formula

• Published in: Journal of food science Vol. 73; no. 3; pp. M154 - M157
• Main Authors: Osaili, T.M, Shaker, R.R, Olaimat, A.N, Al-Nabulsi, A.A, Al-Holy, M.A, Forsythe, S.J
• Format: Journal Article
• Language: English
• Published: Malden, USA Blackwell Publishing Inc 01.04.2008; Institute of Food Technologists; Wiley Subscription Services, Inc
• Subjects: acidity; Adaptation, Physiological - drug effects; alkalinity; Baby foods; Bacteria; bacterial contamination; Biological and medical sciences; biological resistance; chlorine; Colony Count, Microbial; Cronobacter sakazakii; Cronobacter sakazakii - drug effects; Cronobacter sakazakii - growth & development; detergent stresses; detergents; Detergents - pharmacology; Enterobacter sakazakii; ethanol; food contamination; Food Contamination - analysis; Food industries; Food Microbiology; Food science; Fundamental and applied biological sciences. Psychology; heat tolerance; Heating; Hot Temperature; hot water treatment; Humans; Infant; Infant Food - microbiology; Infant Formula; infant formulas; infant milk formula; Infant, Newborn; Linear Models; Milk; Regression analysis; sanitizer stresses; sanitizers; Studies; Temperature; thermal inactivation; sanitizer stresses; Detergent; detergent stresses; infant milk formula; Decrease; Thermal resistance; Enterobacter sakazakii; thermal inactivation; Disinfecting agent; Inactivation; Infant formula; Stress
• ISSN: 0022-1147; 1750-3841
• DOI: 10.1111/j.1750-3841.2008.00671.x

This study determined the effect of acid, alkaline, chlorine, and ethanol stresses on the thermal inactivation of Enterobacter sakazakii in infant milk formula. Unstressed or stressed cells were mixed with reconstituted powdered infant milk formula (PIMF) at temperatures between 52 and 58 °C for various time periods or mixed with PIMF prior to reconstitution with hot water between 50 and 100 °C. D- and z-values were determined using liner regression analysis. In general, detergent and sanitizer stresses decreased the thermal resistance of E. sakazakii in infant milk formula. The results of this study may be of use to regulatory agencies, manufacturers, and infant caregivers to design heating processes to eliminate E. sakazakii.