Optimization and Modeling of Slightly Acidic Electrolyzed Water for the Clean-in-Place Process in Milking Systems

Foods
Yu LiuBaoming Li

Abstract

To find an environmentally friendly and energy efficient alternative to acidic detergent for a milking system clean-in-place (CIP) process, this study investigated the feasibility of applying slightly acidic electrolyzed water (SAEW) alone to wash the system by cleaning soiled stainless steel (304) pipes, rubber gaskets, and PVC milk hoses, which were used in the milking system. The results showed that SAEW with appropriate parameters could achieve the same or even better hygienic effects compared with commercial detergent. Using response surface models, the SAEW parameters required to clean stainless steel were optimized at 9.9 min for the treatment time, 37.8 °C for the water temperature, and 60 mg/L for the available chlorine concentration; and were 14.4 min, 29.6 °C, and 60 mg/L for rubber gasket and PVC samples, respectively. After washing with the optimized parameter combination, bacteria and adenosine triphosphate on the three materials were almost non-detectable, indicating that SAEW has the potential to replace acidic detergents in CIP milking systems.

References

Jul 9, 1999·Luminescence : the Journal of Biological and Chemical Luminescence·C A DavidsonL M Fielding
Mar 29, 2001·Journal of Food Protection·P J SamkuttyP McGrew
Jan 5, 2002·Journal of Agricultural and Food Chemistry·Tetsuya SuzukiYuko Yamaya
Jan 24, 2002·Journal of Agricultural and Food Chemistry·Tetsuya SuzukiKunimoto Hotta
Dec 18, 2003·Journal of Applied Microbiology·S G ParkarJ D Brooks
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Software Mentioned

SAEW
SPSS

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