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Electrochemical Method for Detecting Hydrogen Peroxide—Catalase-Treated Milk

Department of Food Science, Cornell University, Ithaca, New York 14850

ABSTRACT

The electrochemical determination of oxygen in milk provides a quick, practical, and simple means of detecting hydrogen per-oxide-catalase-treated milk. A fresh, raw milk containing more than 15 ppm oxygen should be viewed with suspicion. Severe agitation of milk or flushing with gases reduces the oxygen differential between treated and untreated milks, but under realistic field conditions agitation is unlikely to reduce the level in treated milk below 15 ppm oxygen. Attempts to mask treatments in large volumes of milk by gassing or excessive agitation would be technically complicated, time consuming, and uneconomical.

¹ Present address: School of Public Health, University of Michigan, Ann Arbor 48103.