ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Considering the toxicity of polychlorinated biphenyls (PCBs), which poses threats to environment and human health, this project was designed to develop food processing techniques which can eliminate and/ or reduce these compounds. The potential of freeze-drying methods in reducing PCB levels was evaluated using a precontaminated egg and shrimp homogenate. PCBs were recovered and identified by extraction, florisil column-cleanup, gas chromatography and mass spectrometry. Results indicated 40.3% and 25.2% reduction in shrimp homogenate containing Aroclor 1254 and 1260 respectively. The parallel experiment conducted on whole eggs showed 26.8% and 26.6% reduction respectively, for both the Ardclors. Several factors predicted to be responsible for increased PCB losses in shrimp homogenate compared to whole egg samples are outlined. Since freeze-drying techniques can be used for these products, they can prove to be of added advantage by reducing toxic PCBs.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1976.tb14403.x
