Aflatoxin M1 contamination and antibiotic residue in milk in Khorasan province,Iran |
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| Authors: | A Mohamadi Sani H Nikpooyan R Moshiri |
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| Institution: | 1. Member of Food Science and Technology Department, Islamic Azad University–Quchan Branch, Khorasan Province, Iran;2. Mashhad University of Medical Sciences, P.O. Box: 91775-1365, Iran;1. Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord 34141, Iran;2. Research Institute of Zoonotic Diseases, Shahrekord University, Shahrekord 34141, Iran;3. Member of the Iranian Veterinary Council, Iran;1. International Livestock Research Institute (ILRI), Box 5689, Addis Ababa, Ethiopia;2. International Livestock Research Institute (ILRI), Box 30709, Nairobi, Kenya;1. Dipartimento di Agraria, Università degli Studi di Sassari, Viale Italia, 39, 07100 Sassari, Italy;2. Struttura Complessa Sicurezza Alimentare, Istituto Zooprofilattico Sperimentale della Sardegna, 07100, Via Vienna, 2, Sassari, Italy;3. AGRIS Sardegna, loc. Bonassai, km 18.600 SS291, 07100 Sassari, Italy;1. Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products (Beijing), Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China;2. College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, PR China;3. Tangshan Livestock and Aquatic Products Quality Monitoring Center, Tangshan 06300, PR China;4. Ministry of Agriculture – Milk and Dairy Product Inspection Center (Beijing), Beijing 100193, PR China;5. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China;1. Department of Chemistry, Payame Noor University (PNU), P.O. Box 19395-3697, Tehran, Iran;2. Faculty of Chemistry, Kharazmi (Tarbiat Moallem) University, Tehran, Iran;3. Faculty of Chemistry, Bu-Ali Sina University, Hamadan, Iran;4. Quality Control Laboratory, ARA Quality Research Co., Tehran, Iran;5. Training, Research and QC Laboratory, Marjaan Khatam Co., Tehran, Iran;1. Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon;2. Department of Nutrition & Food Sciences, Faculty of Agricultural & Food Sciences, American University of Beirut, Beirut, Lebanon |
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| Abstract: | The aim of this study was to evaluate aflatoxin M1 (AFM1) contamination and antibiotic presence in milk samples in Khorasan province in Iran. During 4 months (March to June 2008), one hundred ninety-six milk samples were collected from seven dairies. The occurrence and concentration range of AFM1 in the samples were investigated by competitive enzyme-linked immunoabsorbent assay (ELISA) method. Antibiotic presence was determined using Copan test, a broad-spectrum test capable of detecting beta-lactams, tetracyclines, sulfonamides, aminoglycosides and macrolydes. AFM1 was found in 100% of the examined milk samples by average concentration of 77.92 ng/kg. The concentration of AFM1 in all of the samples were lower than Iranian national standard and FDA limit (500 ng/L), but 80.6% of the samples had AFM1 greater than the maximum tolerance limit (50 ng/L) accepted by European Union and Codex Alimentarius Commission. Statistical evaluation showed no significant difference between the mean concentrations of AFM1 of milk samples taken from different factories (P > 0.05). Copan milk test was positive for 40.8% of the samples. |
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