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Residue Limit (residue + limit)
Kinds of Residue Limit Selected AbstractsMaximum Residue Limits of Veterinary Medicinal Products and Their Regulation in European Community LawEUROPEAN LAW JOURNAL, Issue 2 2003Robert Ancuceanu This paper proposes a legal analysis of a legal and empirical tool (maximum residue limits (MRLs)) designed to protect the consumers of animal foodstuffs, as it is regulated in European Community law. After introducing the concept of MRLs in its legal context, MRLs are defined and the need for harmonisation in this field is explained. Then the main rules governing the establishment of MRLs at a Europe-wide level are expounded, an important place being devoted to some problems occurred in the cases decided by the European Court of Justice: is it possible to establish an MRL only for certain therapeutic indications? What about the intention of placing on the market in the establishment of an MRL? Is the procedure for the establishment of MRLs a tight or lax one? The answer to some of these questions involves more general aspects of European Community law. [source] Influence of enrofloxacin administration on the proteolytic and antioxidant enzyme activities of raw and cooked turkey productsJOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, Issue 14 2005Irene Carreras Abstract The objective of this study was to assess the effect of enrofloxacin administration with and without withdrawal period on the quality of fresh meat and cooked products from turkey breasts. Cathepsin B and L activities were inactivated by the thermal process but were not affected by the presence of enrofloxacin. The level of enrofloxacin in samples without withdrawal time was higher than the regulatory maximum residue limit (MRL). The antioxidant enzymes glutathione peroxidase (GSHPx) and catalase (CAT) were affected by both the thermal process and the antibiotic residues in cooked meat. In no cases were differences found in superoxide dismutase (SOD) activity, supporting the theory that this enzyme could play a major role in preventing lipid oxidation of cooked meat. Enrofloxacin residues could contribute to an increase in the oxidative stress produced by thermal processing, as can be deduced by the reduction in GSHPx and CAT activities. Copyright © 2005 Society of Chemical Industry [source] Effects of penconazole on two yeast strains: Growth kinetics and molecular studiesMOLECULAR NUTRITION & FOOD RESEARCH (FORMERLY NAHRUNG/FOOD), Issue 6 2006Dalal Jawich Abstract The aim of this study consisted to evaluate the impact of a pesticide (penconazole) on the growth kinetics and genotoxicity on two yeast strains (Saccharomyces cerevisiae and Metschnikowia pulcherrima). When the penconazole was added at different phases of the growth of M. pulcherrima, no effect was noticed on the kinetics of yeast growth but DNA adducts were observed when penconazole was added in the exponential phase. Increasing doses (1,15 maximum residue limit) of the pesticide added at the beginning of the fermentation did not induce DNA adducts while kinetics were affected. [source] Fate of vinclozolin, thiabendazole and dimethomorph during storage, handling and forcing of chicoryPEST MANAGEMENT SCIENCE (FORMERLY: PESTICIDE SCIENCE), Issue 2 2010Pieter Spanoghe Abstract BACKGROUND: As part of ongoing research for a sustainable production of Belgian endives, the fate of three fungicides during storage, handling and forcing of witloof chicory roots was investigated. Storage roots are protected against Sclerotinia sp. Fuckel and Phoma exigua var. exigua Desm. by means of vinclozolin and thiabendazole respectively. During hydroponic forcing, the most imminent pathogen is Phytophthora cryptogea Pethybr. & Laff., which is controlled by the use of dimethomorph. RESULTS: Vinclozolin and thiabendazole concentrations on roots remained constant during storage at ,1 °C. Dermal exposure of the workers in hydroponics was exceeded. Vinclozolin and thiabendazole residues were not detected 2 weeks after hydroponic forcing; dimethomorph was still detected at harvest. At harvest, the vinclozolin concentration in the chicory heads was below the maximum residue limit, but the chicory roots contained residues much above the thiabendazole and dimethomorph maximum residue level. CONCLUSION: Vinclozolin and thiabendazole residues applied before storage are still present on the roots at the start of the forcing cycle. During the set-up of chicory roots, preventive measures are recommended, as effects of repeated human exposure to low doses of applied fungicides cannot be excluded. Dimethomorph applied at the start of the hydroponic forcing is the only pesticide detected in the drainage water at harvest. The chicory heads were safe for human consumption. However, more attention should be paid to the residues of fungicides in the roots used for cattle feeding. Copyright © 2009 Society of Chemical Industry [source] Risk assessment of thiacloprid and its chemical decontamination on eggplant, Solanum melongena L.PEST MANAGEMENT SCIENCE (FORMERLY: PESTICIDE SCIENCE), Issue 2 2009Jayakrishnan Saimandir Abstract BACKGROUND: Thiacloprid [(Z)-3-(6-chloro-3-pyridylmethyl)-1,3-thiazolidin-2-ylidenecyanamide; CalypsoÔ] is a systemic insecticide having persistence in the plant system. It was chosen for the management of the eggplant shoot and fruit borer, Leucinodes orbonalis Guen. Management of this insect pest is difficult because it harbours inside the shoot and fruit portions of eggplant. The persistence of thiacloprid on eggplant has not been studied in India. The Food and Agriculture Organisation (FAO) has proposed its maximum residue limit (MRL) on eggplant as 0.7 mg kg,1, and there is a need to validate this value. Since residues were found to be above this level, five different decontamination agents were tested for the decontamination of thiacloprid from eggplant. RESULTS: The half-life of thiacloprid was 11.1 and 11.6 days from trials in 2 years. Safety factors such as theoretical maximum daily intake (TMDI) and maximum permissible intake (MPI) were used to arrive at a risk assessment to human health from the analytical data obtained from the field trials. Thiacloprid at the doses tested (30 and 60 g AI ha,1) was not effective in managing eggplant fruit borer. A waiting period of 3 days before harvest of the fruits after insecticide application and a processing factor (PF) could not ensure a sufficient margin of safety (MOS). Subjecting the data to a processing factor of 60% could not bring the residues below the proposed MRL. CONCLUSION: Thiacloprid is not found to be an appropriate and effective agent for application to eggplant. Either the proposed MRL needs to be revised or good agricultural practice involving thiacloprid for plant protection in eggplant cultivation is required. Copyright © 2008 Society of Chemical Industry [source] Multiresidue analysis of tranquilizers and the beta-blocker Carazolol in meat by liquid chromatography/tandem mass spectrometryRAPID COMMUNICATIONS IN MASS SPECTROMETRY, Issue 18 2001Anton Kaufmann A fast and simple method for the quantification of a number of tranquilizers and the beta-blocker Carazolol in pork and bovine kidney is described. Extracts are purified/concentrated by a solid phase extraction step and separated on a reversed phase column with an alkaline (ammonia) acetonitrile gradient. The electrospray tandem mass spectrometer is operated in positive ion multireaction monitoring mode. Resulting chromatograms are free of interfering peaks. The recovery is >75% for all analytes and the limit of detection <1 ppb, which is well below the current maximum residue limit for the various compounds. Copyright © 2001 John Wiley & Sons, Ltd. [source] Maximum Residue Limits of Veterinary Medicinal Products and Their Regulation in European Community LawEUROPEAN LAW JOURNAL, Issue 2 2003Robert Ancuceanu This paper proposes a legal analysis of a legal and empirical tool (maximum residue limits (MRLs)) designed to protect the consumers of animal foodstuffs, as it is regulated in European Community law. After introducing the concept of MRLs in its legal context, MRLs are defined and the need for harmonisation in this field is explained. Then the main rules governing the establishment of MRLs at a Europe-wide level are expounded, an important place being devoted to some problems occurred in the cases decided by the European Court of Justice: is it possible to establish an MRL only for certain therapeutic indications? What about the intention of placing on the market in the establishment of an MRL? Is the procedure for the establishment of MRLs a tight or lax one? The answer to some of these questions involves more general aspects of European Community law. [source] Determination of cyprodinil and fludioxonil in the fermentative process of must by high-performance liquid chromatography,diode array detectionJOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, Issue 11 2008Luis Vaquero-Fernández Abstract BACKGROUND: A quantitative, selective and sensitive high-performance liquid chromatographic method is described for the analysis of new fungicides cyprodinil, fludioxonil and their commercial formulation Switch in model solutions of must and wine, as well as samples during alcoholic fermentation. A study of the dissipation of residues was carried out. RESULTS: The proposed method is based on liquid,liquid extraction (LLE) followed by high-performance liquid chromatography and diode array detection. Dichloromethane was the most appropriate solvent for extracting cyprodinil and fludioxonil in samples. Quality parameters of the proposed method presented good recovery (ca. 97% for almost all compounds) and precision (between 4.8% and 5.4%), and limits of quantification were lower than maximum residue limits (MRLs) in grapes. CONCLUSIONS: There is no matrix effect in the analysis of cyprodinil and fludioxonil. The application of the fermentative process on cyprodinil and fludioxonil fungicides causes a decrease in the concentrations of these compounds. This decrease is slightly higher, the higher the initial concentration, without observing the appearance of any product in degradation. Fludioxonil shows a higher reduction when the compounds are presented together in Switch. Copyright © 2008 Society of Chemical Industry [source] Simultaneous determination of quinolone antibacterials in bovine milk by liquid chromatography,mass spectrometryBIOMEDICAL CHROMATOGRAPHY, Issue 11 2008Alberto Zafra-Gómez Abstract A new liquid chromatography,mass spectrometry (LC,MS) method has been developed and validated for the simultaneous determination of eight quinolone antibacterials for veterinary use in processed bovine milk samples. The quinolones studied included marbofloxacin, ciprofloxacin, danofloxacin, enrofloxacin, sarafloxacin, difloxacin, oxolinic acid and flumequine. Also, a new sample-treatment procedure was used for extraction and preconcentration of these compounds. It involved defatting by centrifugation, protein precipitation by adding a mixture of glacial acetic acid,acetonitrile and removing acetonitrile with dichloromethane; finally, the acidified aqueous layer was evaporated to dryness in a speed vac system, resuspended in the mobile phase and filtered prior to LC injection. The mobile phase was composed of a formic acid aqueous solution 0.1% (v/v) and acetonitrile, with an initial composition of water,acetonitrile 95: 5 (v/v) and using linear gradient elution. Norfloxacin was used as internal standard. The limits of quantification found (2,7 ng g,1) were in all cases lower than the maximum residue limits tolerated by the European Union for these compounds in milk. Copyright © 2008 John Wiley & Sons, Ltd. [source] | ||||||||||