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磺胺类抗生素具有抗菌谱广、使用简单和价廉等优点,被广泛应用于动物抗菌治疗,但抗生素的滥用易导致动物源性食品抗生素超标等食品安全问题。食品中磺胺类抗生素残留检测方法主要为高效液相色谱法,而动物源性食品样品复杂、基质干扰大,色谱分析方法通常耗时较长,费用昂贵,因此开发高效的快速样品前处理技术和快检方法对磺胺类抗生素残留检测尤为重要。本文综述了近十年来动物源性食品磺胺类抗生素残留快速样品前处理技术的研究进展,包括场辅助加速样品前处理技术和基于材料加速的相分离样品前处理技术,介绍了磺胺类抗生素的多种快检方法如荧光光谱法、化学发光法、表面增强拉曼光谱法、电化学法、免疫分析法和微生物抑制法等的研究进展,并对动物源性食品磺胺类抗生素残留快速样品前处理和检测方法存在的问题和未来发展趋势进行了分析和展望。 相似文献
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菊酯类农药是模拟天然除虫菊酯化学结构发展而来的仿生农用药物,使用量仅次于有机磷农药。菊酯类农药对人体免疫、生殖、神经系统等多方面存在毒副作用,我国对其在食品中的残留限量作了严格的规定。随着剧毒、高毒农药禁用令的实施,加强食品中菊酯类农药残留监控显得更为重要,建立高效、快捷、准确测定食品中菊酯类农药残留的方法迫在眉睫。目前,QuEChERS法、微萃取、石墨烯技术等样品前处理技术,气相色谱-质谱联用、液相色谱-质谱联用等仪器分析技术及免疫标记法、化学分析快速检测法等快检技术成为了研究热点。本文主要综述了食品中菊酯类农药残留检测检测方法的前处理、色谱-质谱分析及快速检测技术应用的研究进展,并在此基础上结合食品安全监测的工作实际,对食品中菊酯类农药残留检测技术的发展趋势进行了展望。 相似文献
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近几年有关食品的农药残留问题越来越受到人们的关注,而要想解决食品中的农药残留问题首先需要提高农药残留的检测分析技术。在进行食品的农药残留的样品检测时,检测的过程中用时最长的就是检测的样品前处理技术,并且在处理过程中其出现误差的可能性也较大,因此要首先提高食品的样品前处理技术才能够有效地提高食品农药残留的检测质量以及检测效率。本文在对现有的样品前处理系统进行分析的基础上,提出了有效的改进策略,以提高食品中农药残留的检测水平。 相似文献
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为保障动物健康和生产性能,兽药在畜牧生产中得到普遍应用。但兽药的滥用及不合理使用导致兽药及其代谢产物残留在动物源性食品中,对人们的身体健康造成潜在危害。因此,开发简单、快速、高效的动物源性食品中多兽药残留检测方法尤为重要。如何从复杂样品基质中将多种残留的兽药提取和净化是兽药残留检测的关键环节,直接了影响检测结果的准确性。本文系统综述了畜禽肉、蛋中多种兽药残留的样本前处理与净化方法,同时对常用前处理方法的优劣和适用性等问题进行了比较分析,并指出未来样本前处理技术发展趋势,为促进动物源性食品中样本前处理技术的发展提供理论参考。 相似文献
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Mi-Sun Ha Myung-Sub Chung 《Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment》2016,33(5):817-823
A simple and sensitive method for detecting enrofloxacin, a major veterinary fluoroquinolone, was developed. Monoclonal antibody specific for enrofloxacin was immobilised on a chip and fluorescent dye-labelled microparticles were covalently bound to the enrofloxacin molecules. Enrofloxacin in solution competes with the microparticle-immobilised enrofloxacin (enroMPs) to bind to the antibody on the chip. The presence of enrofloxacin was verified by detecting the fluorescence of enrofloxacin-bound microparticles. Under optimum conditions, a high dynamic range was achieved at enrofloxacin concentrations ranging from 1 to 1000 μg kg?1. The limits of detection and quantification for standard solutions were 5 and 20 μg kg?1 respectively, which are markedly lower than the maximum residue limit. Using simple extraction methods, recoveries from fortified beef, pork and chicken samples were 43.4–62.3%. This novel method also enabled approximate quantification of enrofloxacin concentration: the enroMP signal intensity decreased with increasing enrofloxacin concentration. Because of its sensitivity, specificity, simplicity and rapidity, the method described herein will facilitate the detection and approximate quantification of enrofloxacin residues in foods in a high-throughput manner. 相似文献
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目的 对深圳市家禽类食品中兽药残留水平进行测定和分析。方法 在深圳市10个行政区的商场超市、农贸市场及餐厅随机抽取鸡肉、鸭肉及鸡胃样品共计240份, 采用液相色谱-质谱/质谱法(liquid chromatography tandem mass spectrometry, LC-MS/MS)测定家禽类食品中11种喹诺酮类抗生素、4种四环素族抗生素、氯霉素及五氯酚酸钠的含量。结果 240份家禽类食品兽药残留的总体检出率为3.75%(9/240), 检出项目及其检出率分别为恩诺沙星2.08%(5/240)、环丙沙星0.83%(2/240)、沙拉沙星0.42%(1/240)、氧氟沙星0.42%(1/240)。其他7种喹诺酮类抗生素、四环素族抗生素、氯霉素及五氯酚酸钠均未检出。240份家禽类食品总体超标率为0.42%(1/240), 仅有1份鸡肉样品恩诺沙星超标。结论 2017年深圳市家禽类食品中兽药残留水平较低,氯霉素和五氯酚酸钠达到我国《动物性食品中兽药最高残留限量》中规定的在所有食品动物、所有可食组织中不得检出的要求。 相似文献
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维吉尼霉素是一种环状多肽类抗生素,常用于猪、鸡等畜禽疾病的预防和治疗,并能有效提高饲料利用率和动物生长速率。但食品中抗生素的残留会引起细菌、动物与人之间产生交叉耐药性,欧盟从1999年开始禁止将包括维吉尼霉素在内的抗生素作为饲料添加剂,抗生素在动物性食品中的残留普遍受到各国的高度重视。本文主要综述样品前处理技术和维吉尼霉素检测方法,对比分析各检测方法的优缺点,同时也对检测方法的发展进行展望,以期为我国对维吉尼霉素残留的检测和监管研究提供参考。 相似文献
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Melamine is a nitrogen-rich compound (about 66%) whose fraudulent addition to foods aims to increase the apparent protein content. In 2008, melamine adulteration incidents occurred in China caused several deaths in humans from kidney failure and other health problems. This issue prompted private as well as governmental laboratories to develop several analytical methods in order to determine melamine in foods. This review aims to provide an overview of the analytical techniques currently available in the literature for melamine detection and measurement in milk and dairy products, including a specific section related to sample preparation. Recent studies concerning conventional (both screening and confirmatory) methods are reported, and technical and critical issues are discussed for each technique (liquid and gas chromatography, mass spectrometry, liquid chromatography coupled to mass spectrometry, gas chromatography coupled to mass spectrometry, and capillary electrophoresis). These techniques, very sensitive and specific but also time-consuming, may require tedious sample preparation, costly instrumentation, and skilled personnel. Therefore, new innovative detection methods are also provided, focusing attention on immunoassay, sensor technology, vibrational spectroscopy coupled to chemometrics, hyperspectral imaging, micellar liquid chromatography, magnetic resonance spectroscopy, and chemiluminescence. 相似文献
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David Sanz Luis Mata Santiago Cond��n Mar��a ��ngeles Sanz Pedro Razquin 《Food Analytical Methods》2011,4(2):212-220
Concerns regarding the presence of drug residues in foods include allergic reactions, toxicity, technological problems in
fermented products and the development of antibiotic resistance in human pathogens. The analysis of antimicrobial residues
in foods is generally carried out, in a first step, through microbiological screening tests. These tests commonly use Geobacillus stearothermophilus as target specie but show a low ability to detect quinolones. The goal of our study was to evaluate the performance of a
new microbiological test (Equinox) for detection of quinolone residues in muscle. The kit contains an ampoule with a standardized
number of freeze-dried Escherichia coli and must be diluted with a specific detection medium containing a redox indicator. Microbial growth will modify the redox
potential of the medium being observed through a colour change (from blue to brown/orange). Equinox limits of detection for
most of tested quinolones (enrofloxacin, norfloxacin, sarafloxacin, marbofloxacin, ciprofloxacin, danofloxacin and difloxacin)
were below or around maximum residue limit (MRL) UE and CCβ values obtained corresponded with the determined sensitivities.
In contrast, flumequine could not be detected at MRL UE levels. Moreover, Equinox displayed a low sensitivity to other antimicrobials.
Sensitivity data obtained in vitro were consistent when testing incurred muscle samples. Matrix constituents, test batch and
animal species did not affect the performance of the test. Equinox could be easily automated enabling a large numbers of simultaneous
analysis, and a photometric reading can be applied for a precise interpretation. The results obtained in this study prove
that Equinox is a useful tool when screening for quinolone residues or can be combined with other methods for screening of
unknown samples. 相似文献