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  • 1
    ISSN: 1745-4573
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: This study involved testing of adipose tissue from beef (208 samples), pork (112 samples) and poultry (39 samples) for pesticide residues, including nine different chlorinated hydrocarbons (CHC) and nine organophosphates (OP). Tissues were collected during a two-year period (1996–1997) from plants located in the Northwestern Mexico, and determinations conducted by gas chromatography under international performance criteria. While none of the pork samples contained CHC residues, 17 (1996) and 11 (1997) beef samples contained either hexacholorobenzene, heptachlor, aldrin or dieldrin. Also, poultry samples (three in one year and four in the other) contained residues of either hexachlorobenzene, heptachlor or dieldrin. None of the tissues tested contained organophosphate residues above the detection limit. CHC incidences and concentrations were lower than those reported for other Mexican and Latin American regions, but higher than reports from the U.S. Based on the Mexican or U.S. tolerances, all concentrations of CHC found were nonviolative.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 55 (1990), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Chicken and bovine tissues from Hermosillo, Mexico, were analyzed for penicillin, tetracycline, streptomycin, chloramphenicol and gentamycin presence and concentration using a biological radio-assay (Charm Test II). The samples were also analyzed for antiobiotic resistant bacteria. The concentrations found varied widely for each antibiotic family and were above FDA tolerance limits. Penicillin was not detected in the samples. Almost 50% of beef tissues presented two different antiobiotics, while three were commonly found in chicken. E. coli, S. epidermidis, H. alvei, E. agglomerans, P. mirabilis, Salmonella sp., Citrobacter, E. aerogenes; and S. aureus were among the most commonly found microorganisms. They mainly presented antibiotic resistance to penicillin, tetracycline and streptomycin.
    Type of Medium: Electronic Resource
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