Significance of Abuse Chemical Contamination of Returnable Dairy Containers: Sensory and Extraction Studies

Journal of Food Protection
John M Gasaway

Abstract

LEXAN® resin, polyethylene plastic, and glass returnable dairy containers were exposed to 85 dissimilar pesticides. Following exposure, all containers found compatible with stored pesticides were conventionally washed. Sensory testing of washed containers was more effective in detection of off-odors than was the contaminant detection device. All three types of containers exhibited off-odors when they contained pesticide and then were washed. Milk stored in washed containers, previously exposed to pesticides for 10 days, extracted the pesticide ingredient in 6 out of 85 instances for LEXAN resin and 22 out of 85 instances for polyethylene plastic. This investigation examined additional relationships between pesticide storage, specific contaminant detector responses, sensitivity of organoleptic evaluation and chemical extraction studies of milk.

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