摘要:

Salinomycin is widely used as a feed additive to control coccidiosis in the broiler industry world‐wide. EC legislation on veterinary drug residues will soon be extended to cover poultry. This will require the development of rapid assays to screen for the presence of residual concentrations of this and other drugs in poultry meat. This study describes the development of an enzyme‐linked immunosorbent assay for salinomycin that has a limit of detection of approximately 0.2ng/g. The antibody cross‐reacts with narasin, but is not subject to interference from lasalocid, maduramicin or monensin. Residual concentrations of salinomycin were measured in the tissues of broilers following feeding of medicated feed containing 60mg/kg salinomycin. Salinomycin residues were present only at very low concentrations in liver and muscle, and fell below the limit of decision of the assay within 2 days of withdrawal of the medicated feed.

ISSN:0265-203X    

DOI:10.1080/02652039509374283

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

A reverse phase liquid Chromatographic (LC) method for the determination of chloramphenicol (CAP) residues infoies graswas tested. The method was based on acetonitrile‐sodium chloride extraction, sample clean‐up with hexane and purification on a Sep‐Pak C18 cartridge. Acceptable Chromatographic separation was obtained for thawed samples with two sample clean‐up steps with hexane, a purification step with acetonitrile + water (87.5 + 12.5) (v/v) before the elution of CAP residues by a mixture of acetonitrile + water (70 + 30) (v/v) with a Chromatographie separation on Spherisorb ODS‐2 (5μm)column using sodium acetate buffer (pH 4.3) + acetonitrile (78 + 22) (v/v) as mobile phase. The detection limit of the method was 2.5μg/kg. The mean recovery from spiked samples at the 10μg/kg level was 55.7 ± 8.7%.

ISSN:0265-203X    

DOI:10.1080/02652039509374284

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

This study was undertaken in order to monitor the intake of lead, cadmium and mercury in different geographical areas of Spain. The intakes of four populations were estimated from their habitual diets and compared with the Provisional Tolerable Weekly Intake (PTWI) or the Acceptable Daily Intake (ADI) to estimate the health risk of toxicity. Representative market basket diets from four areas, Galicia, Valencia, Andalucia and Madrid, were collected and their contents of cadmium, lead and mercury determined. The number of different foodstuffs used in each area (64, 67, 71 and 73) was based on the number of foods providing 95% of the total energy intake. Data on the contribution of food groups to the total daily intake of heavy metals were also obtained. The daily amounts of lead in the diets were between 37 and 521μg/day, the Madrid population having the highest average intake of this metal and exceeding the PTWI, because of the vegetables and cereals consumed. The average total dietary cadmium intakes—provided mainly by fish including Crustacea and molluscs—were about 25–45% of the PTWI. The intake of mercury, which is mainly provided by the fish group (66–90%), was about 9–17% of the PTWI.

ISSN:0265-203X    

DOI:10.1080/02652039509374285

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

Daily intakes of aluminium were estimated for 14 age—sex groups based on the Food and Drug Administration's (FDA) Total Diet Study dietary exposure model. The aluminium content of the core foods of the FDA Total Diet Study were determined by analyses, recipe calculation, or literature values and coupled with information on food consumption from the 1987–88 US Department of Agriculture Nationwide Food Consumption Survey. Estimates of aluminium intakes ranged from 0.7mg/day for 6–11‐month‐old infants to 11.5mg/day for 14–16‐year‐old males. Average intakes for adult men and women were 8–9 and 7mg/day, respectively. The major contributors to daily intake of aluminium were foods with aluminium‐containing food additives, e.g. grain products and processed cheese.

ISSN:0265-203X    

DOI:10.1080/02652039509374286

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

Selected foods (260 samples) packaged in materials with the potential to contribute plasticizers to the food, and available food composites (98 samples) obtained from the Canadian Health Protection Branch Total Diet Program, were analysed for phthalate plasticizers and di‐2‐ethylhexyl adipate (DEHA). The available contacting packaging was also analysed for plasticizers. The results show DEHA in food‐contacting film and as a migrant in store‐wrapped meat, poultry, fish, cheese and ready‐to‐eat foods at levels as high as 310μg/g (cheese). DEHA levels in unheated film‐wrapped ready‐to‐eat foods were increased by heating. The di‐2‐ethylhexyl, dibutyl, butylbenzyl and diethyl phthalate esters (DEHP, DBP, BBP and DEP, respectively) were also found in both the packaging and the contacted foods. Low levels of DEHP (0.065μg/gaverage in beverages and 0–29 μ/g, average in foods) associated with the use of DEHP‐plasticized cap or lid seals, were found in a variety of glass‐packaged foods; DBP, BBP and DEHP were found, as previously described, in butter and margarine as migrants from the aluminium foil—paper laminates; and DEP in pies at 1.8μg/g(average) as a migrant from the pie carton windows. In most cases, plasticizers detected in the food were also found in the associated packaging. When possible, ‘core’ or non‐contacting food portions were analysed to verify the migration phenomena.

ISSN:0265-203X    

DOI:10.1080/02652039509374287

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0265-203X    

DOI:10.1080/02652039509374272

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor