Effects of Processing and Cooking on PBB Residues

To study the effect of processing on polybrominated biphenyl (PBB) levels, milk from four dairy herds containing less than 0.3 ppm (fat basis) of physiologically incorporated PBBs was processed individually into cream, skim milk, butter, and stirred curd cheese. Pasteurized and freeze-dried whole mi...

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Bibliographic Details
Published in:Environmental health perspectives 1978-04, Vol.23, p.37-41
Main Authors: Zabik, M. E., Johnson, T. M., Smith, S.
Format: Article
Language:English
Subjects:
"Workshop on Scientific Aspects of Polybrominated Biphenyls," East Lansing, Michigan, October 24-25, 1978: Steven Aust, Conference Chairman
Animals
Biphenyl Compounds - poisoning
Broths
Cattle
Chickens - metabolism
Cooking
Cream
Drumsticks
Fats
Food Contamination - analysis
Food Handling
Hot Temperature
Meat - analysis
Meat - poisoning
Meats
Milk
Milk - analysis
Milk - poisoning
Polybrominated biphenyls
Polybrominated Biphenyls - analysis
Polybrominated Biphenyls - poisoning
Skim milk
Whole milk
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Summary:To study the effect of processing on polybrominated biphenyl (PBB) levels, milk from four dairy herds containing less than 0.3 ppm (fat basis) of physiologically incorporated PBBs was processed individually into cream, skim milk, butter, and stirred curd cheese. Pasteurized and freeze-dried whole milk, skim milk, and cream, spray-dried whole milk and skim milk, and condensed whole milk were also made. PBBs were concentrated in the high-fat products. Spray-drying reduced PBBs in whole milk and skim milk while pasteurization, freeze-drying, aging of cheese, and condensation were not effective. To study the effect of cooking on PBB levels, thigh meat, thigh skin, drumstick and breast (with skin) from half of chickens fed PBBs were analyzed raw, and pieces from the other halves were analyzed following separate pressure cooking. The level of PBBs expressed as parts per million on a solids basis was lower in the cooked sample than in the corresponding raw piece and part of the PBBs lost were found in the drip. Recoveries of PBBs in cooked tissue and broth ranged from 68.1% in the thigh skin to 84.6% in the drumstick, with approximately two-thirds of the recovered PBBs found in the cooked meat itself. Therefore, pressure cooking resulted in a loss ranging from 36% for the drumstick to 53% for the thigh skin.
ISSN:0091-6765
1552-9924
DOI:10.1289/ehp.782337