毛细管电泳在食品分析中的应用进展

阐述了毛细管电泳在食品分析中的应用。主要包括糖类、氨基酸、脂肪酸、有机酸、矿物质、维生素、食品添加剂、农药残留量、生物毒素、抗生素残留量等食品成分的分析，并简要介绍了毛细管电泳的一般原理，对今后的发展前景进行了展望。     

毛细管电泳在食品分析中的应用

介绍了毛细管电泳 (CE)在食品分析中的应用。重点介绍了食品中无机阳离子、无机阴离子、有机酸、碳水化合物、维生素、脂肪酸、氨基酸、食品添加剂及农药残留等成分的 CE分析方法。并就毛细管电泳法的检出下限、线性和精密度 ,与其它方法作了比较。     

食品中速灭威农药残留检测方法研究进展

速灭威是目前使用较为广泛的氨基甲酸酯类农药,主要用于水稻、棉花和果树的虫害防治。如果长期或不正当用药,极易在食品中残留损害人体健康,速灭威农药残留问题引起人们的极度关注。本文综述了毛细管电泳、高效液相色谱、气相色谱、色谱-质谱联用、免疫分析方法等速灭威农药残留检测方法的研究进展,并对检测方法进行了展望,以期为保证食品安全和提高我国速灭威农药残留的检测能力提供技术支持。     

食品中农残检测及预处理新技术进展

阐述了食品中农药残留分析的预处理新技术(包括超临界流体萃取法、固相微萃取、基质固相分散萃取、加速溶剂萃取、凝胶渗透色谱等)和检测新技术(包括毛细管电泳法、QuEchERS法、免疫分析法、生物传感技术等).     

绿色分析测试技术在食品检验中的运用

绿色分析测试技术具有无污染、使用化学药剂少、成本低的特点,并且检测速度快、操作简单,可检验食品中的组分、追溯食品产地、测定食品质量,确定食品中的农药残留,在食品检测行业的应用十分普遍.现阶段,绿色食品检测技术日益发展成熟,本文主要针对近红外光谱、毛细管电泳法、X射线荧光分析法进行了分析,并对这些测试技术在食品检测中的具...     

毛细管电泳在食品分析中的应用

论述毛细管电泳在食品分析中的应用,主要包括蛋白质,糖类,维生素,矿物质,有机酸,食品添加剂,农药残留量,生物毒素,抗生素残留量和食品中其它一些物质的测定。     

食品中农药残留分析技术研究

本文论述了我国食品中农药残留污染的现状,阐述了色-质联用技术、极谱分析、串联质谱技术、毛细管电泳技术等在食品农药残留分析中应用比较广泛的分析技术的特性,同时阐述了具有更广泛应用前景的现场快速检测技术:免疫分析、生物传感器、酶抑制技术等。     

电泳法在食品过敏原检测中的应用

本文简要介绍了食品过敏原的检测特点和难点,比较了目前常用的聚合酶链式反应法、环介导等温扩增法、酶联免疫法、液相色谱法和液相色谱质谱法等检测方法的优劣势。主要介绍了电泳技术的特点,总结了经典电泳技术在食品过敏原分析上的应用现状。详细介绍了近年来毛细管电泳技术在食品过敏原检测研究方面取得的进展,列举了区带毛细管电泳法、亲和毛细管电泳法、凝胶毛细管电泳法、动态涂层毛细管电泳法和芯片毛细管电泳法在致敏蛋白分析方面的应用,并对电泳法在食品过敏原分析中的发展趋势进行了展望。     

农产品中农药残留的检测技术应用及分析

本文主要对农产品中农药残留检测技术的应用进行分析,包括色谱法、色谱-质谱联用技术、毛细管电泳法、免疫分析技术、生物传感器技术、活体生物检测技术以及酶抑制法等。     

21世纪毛细管电泳在食品分析中的应用

评述了毛细管电泳技术(CE)在食品分析中的应用;介绍了CE的多种分离模式及食品中无机阳离子、无机阴离子、有机酸、碳水化合物、维生素、脂肪酸、氨基酸、食品添加剂及除草剂、植物生长调节剂、农药残留等成分的CE分析方法;展望了将来毛细管电泳技术的研究及其在食品研究、开发中的应用的发展。     

Survey of pesticide residues in baby foods (1996.4-1998.6)

Between April 1996 to June 1998, 133 samples of 9 food commodities were analyzed for pesticide residues. In 8 samples of 5 commodities, 5 kinds of pesticides residues were detected. The baby foods in which the pesticides were detected were produced from vegetables and fruits. In our investigations, pesticide residues have been frequently detected in the raw materials. For the baby foods containing pesticides, intake amounts of the pesticides calculated from the daily feeding volume and the ADI were compared. Residual pesticide levels in baby food commodities are low, and it was concluded that they are not likely to present any problem in normal usage.     

Survey of pesticide residues in baby foods (1999.4-2005.6)

A survey of pesticide residues in 316 baby foods on the Tokyo market from April 1999 to June 2005 was carried out. Fifteen kinds of pesticides, including organophosphorus, organochlorine, carbamate, pyrethroid and others, were detected between at levels Tr (below 0.01 ppm) and 0.55 ppm from 28 samples. The baby foods in which residual pesticides were detected were produced from flour, leaf vegetable and fruits. The pesticides were detected in baby foods produced with minimal processing, such as straining and squeezing. For the baby foods containing pesticides, the amounts of intake of the pesticides were calculated from the recommended servings, and compared with the ADI values. Residual pesticide levels in baby food were between 0.06 and 16.6% of the ADI. Therefore, these foods should be safe in normal usage.     

食品中农兽药残留检测新技术研究进展

农兽药残留是造成食品安全问题的一个重要方面,已经引起了社会的广泛关注。针对食品中农兽药残留开发检测的新技术、新方法及相关应用研究工作近几年来取得了较大进展。本文对农兽药残留检测常用方法和技术及近年相关研究进展作了详细的综述,并对其未来的发展方向做了展望,以期为相关检测技术的进一步发展提供参考与借鉴。     

Preparation of samples for proficiency testing of pesticide residue analysis in processed foods

To conduct proficiency testing for the analysis of pesticide residues in processed foods, fortified samples of retort curry and pancake were examined. In the case of retort curry, heating and mixing were necessary at the time of preparation to provide a homogenous analytical sample. A mixture of 4 carbamates and 11 organophosphorus pesticides was spiked and 14 of them showed consistent results in the samples. In the case of pancake, 10 kinds of pesticides were added to the pastry. The prepared pastry was them cooked. The relative concentrations of most of the pesticides in the pancake were not affected and all the pesticides showed consistent results in the samples. These results showed that the two tested samples were suitable for proficiency testing.     

Pesticide content of infant formulae and weaning foods available in New Zealand

A survey of the pesticide content of 25 commercially available infant formulae and 30 weaning foods available in New Zealand was undertaken in 1996. It included a representative mixture of imported and New Zealand manufactured infant foods. Three different pesticide screening techniques were used: a high-sensitivity organochlorine screen was carried out on all infant formulae, while a multiresidue screen (organochlorine and organophosphorus pesticides, synthetic pyrethroids, carbamate pesticides, fungicides and herbicides), and a specific screen for dithiocarbamate fungicides were both carried out on all weaning foods and on soy-based infant formulae. All results are expressed on a ready-to-feed basis. Extremely low levels of residues of three organochlorine compounds (p,p'-DDE, p,p'-DDT and dieldrin) were detected in infant formulae samples. Residues of p,p'-DDE were found in seven of 20 milk-based infant formulae at concentrations ranging from 0.03 to 0.5 μg kg^-1. Residues of p,p'-DDT were found in one imported milk-based infant formula at 0.7 μg kg^-1, and dieldrin residues were detected in four of five soy-based infant formulae at concentrations ranging from 0.05 to 0.08 μg kg^-1. The multiresidue pesticide screen detected low levels of residues of two organophosphorus pesticides; azinphos-methyl in one soy-based infant formula at a level of 22 μg kg^-1 and pirimiphos-methyl in two cereal-based weaning foods at concentrations of 5 and 14 μg kg^-1. None of the other approximately 140 pesticides (including fungicides and herbicides) included in the multiresidue screen were detected in any weaning foods or soy-based infant formulae, at a detection limit of 10 μg kg^-1. No residues of dithiocarbamate fungicides were detected in any product analysed, at a detection limit of 100 μg kg^-1.     

Investigation of pesticide residues in foods distributed in Kitakyushu City

We investigated 160 kinds of pesticide residues in 715 samples of 116 kinds of foods distributed in Kitakyushu city. Sixty kinds of pesticides were detected in 55 kinds of foods (204 samples) in the range of 0.002-22 mg/kg. Five kinds of pesticides in 7 samples violated the residue standards and the indication of "unused". The detection ratios of unregulated pesticide in domestic and imported foods were 27.8 and 33.0%, respectively. Iprodione, dicofol, diethofencarb, procymidone and chlorfenapyr (for domestic food) and total bromine, benomyl, chlorpyrifos, dicofol, fenvalerate, cypermethrin and dimethoate (for imported food) showed relatively high detection ratios. Chinese cabbage, garland chrysanthemum, tomatoes and green teas (domestic) and broccoli, bananas, grapefruit, lemons, oranges, frozen edamame and frozen kidney beans (imported) showed high relative pesticide detection ratios. Residual pesticides were detected with relatively high frequency in imported fruits, imported frozen foods and imported processed foods.     

A review of methodology for the analysis of pyrethrin and pyrethroid residues in food of animal origin

Pyrethrin and pyrethroid pesticides are commonly used in crop protection and animal health, to control pests. As a result, they can potentially transfer into food if good agricultural practice is not followed or even due to accidental contamination. The analysis of these compounds has been widely reported in crops and the environment. However, the analysis of pyrethrin and pyrethroids has not been reported frequently in foods of animal origin, particularly animal tissues. The focus of this review is to report on pyrethrin and pyrethroid analysis including key aspects such as chemistry, choice of target matrix, sample preparation, chemical analysis, legislation and method validation. This review shows that most methodologies for the analysis of these compounds are based on gas chromatography with the trend in recent years to move towards GC-MS or GC-MS/MS based platforms. This review shows that these compounds can also be satisfactorily analysed by LC-MS/MS, which can be advantageous because of shorter chromatographic run times. A wide range of sample preparation procedures have been applied in analytical methods and more complex protocols are required for GC applications, whereas more crudely prepared extracts can be analysed by LC-MS/MS. This review demonstrates that pyrethrin and pyrethroid residues should be included as analytes in multi-class analytical methods for pesticides and veterinary drug residues in animal derived foods.     

电化学方法在食品化学污染物快速检测中的 研究进展

近年来,食品化学污染物的有效控制与快速、灵敏检测受到了政府和民众的高度重视。电化学方法由于其仪器简单、分析速度快、检测灵敏度高等优点在食品化学性污染物检测方面越来越受到关注。本文介绍了电化学检测方法的主要类型及其基本原理,重点阐述了电化学分析方法在食品中重金属、农药、抗生素等化学残留物检测中的应用研究。最后,文章还对电化学方法在食品安全快速检测领域中的发展趋势进行了展望。     

Multiresidue analysis of nitrogen-containing and sulfur-containing pesticides in agricultural products using dual-column GC-NPD/FPD

We investigated simultaneous analytical methods for pesticide residues in large numbers of agricultural products samples. Extraction of each sample with acetonitrile was followed by a salting-out step using a graduated cylinder. The test solution was cleaned up with gel permeation chromatography (GPC), which separated the pesticide eluate into 2 fractions, and then with a tandem mini-column. Analysis was done with a dual-column GC equipped with a dual NPD and FPD (S mode) detector. Use of the Siltek-deactivated liner, guard column, and Y connector, and Silcosteel-treated NPD jet was effective for preventing the breakdown of sulfur-containing pesticides. Recoveries of 87 nitrogen-containing and sulfur-containing pesticides from fortified spinach, tomato, apple, strawberry and brown rice, ranged from 71 to 127% with RSD values of 1-24%, except for recoveries of aldicarb, amitraz, ethiofencarb, imazalil, propamocarb and triflumizole. Detection limits of pesticides were very good (0.3-5 ppb (NPD) and 2-20 ppb (FPD)) for routine analysis of pesticide residues in foods. Surveillance of pesticides in agricultural products was carried out by using the present method. From 22 out of 33 samples, 21 pesticides (43 in total) were detected. The results indicated that the present method can be applied as an efficient and reliable means for monitoring pesticide residues in agricultural products.     

江苏省不同季节蔬菜农药残留状况调查分析

目的调查分析近3年江苏省内主要蔬菜生产县(区)不同季节蔬菜农药残留状况。方法按照GB2763-2016《食品安全国家标准食品中农药最大残留限量》对蔬菜中农药残留进行检测并对检测结果进行判定。结果第一季度的蔬菜农药残留检出率和超标率是全年4个季度最高的;叶菜类蔬菜农药残留风险是各类蔬菜中较大的且各年度间变异小;限用农药残留风险比非禁限用农药大,非禁止限用农药中腐霉利、啶虫脒残留风险较大。结论江苏省不同季节蔬菜农药残留存在一定风险,有必要在今后工作中进行原因排查和分析,以便于在发现的风险关键点加强农产品安全监测。