“食品添加剂”教学分析

选择《化学与生活》模块中的“食品添加剂”作为选修课题,让学生认识化学与生活的重要关系,激发学生学习化学的兴趣,促进科学素养的全面提高。在教学实践中实施探究学习的教学方法,获得了很好的教学效果。     

食品分析

本文对１９９２￣１９９３年间的国内食品分析进展作了僮介。内容包括光度分析（分光光度法、发光光度法、原子吸收光谱法、原子荧光光谱法、原子发射光谱法、近红外光谱法等），色谱分析（气相色谱法、液相色谱法、离子色谱法、簿层色谱法、电泳分析等）及电化学、化学计量学等，引用文献５８４篇。     

反相高效液相色谱法同时测定食品中14种食品添加剂

采用反相高效液相色谱法研究了一次进样、同时测定食品中苯甲酸、山梨酸、尼泊金甲酯、尼泊金乙酯、尼泊金丙酯、尼泊金丁酯,糖精钠、安赛密,柠檬黄、日落黄、胭脂红、苋菜红、亮蓝及咖啡因等14种食品添加剂的分析方法.实验采用Hypersil ODS柱(4.6×200 mm,5μm,DEAIC)为分离柱,以20 mmol/L乙酸铵(pH 6.8)-甲醇为流动相,用紫外检测器234 nm、254 nm下进行检测,整个分析过程在18 min内完成.被测样品经简单处理后进样,其平均加标回收率为94.5%～99.1%,相对标准偏差小于4.5%.方法适用于食品常规质量检测.     

食品分析

本文对１９９４￣１９９７年间国内食品分析进展作了简介，内容包括概述食品的元素分析和常规检验；化合物分析；添加剂分析；食品色香味品质分析；营养分析；快速检验、毒物、农药残留分析和微生物检验；基础研究与新食源的开发分析等。     

比值导数波谱法分析食品中抗氧化剂

利用混合物的波谱除以干扰组分的波谱得比值波谱，对波长求导得比值导数波谱，由此可消除干扰组分的吸光度叠加效应。该法能有效地对三组分混合物体系进行分析。利用此法对没食子酸丙酯(PG)、2，4，5-三羟基丁酰苯(THBP)和叔丁基对苯二酚(TBHQ)所组成的三组分混合体系进行分析，结果满意。     

食品添加剂分析方法研究进展

综述了近10年来有关食品添加剂分析的研究状况。内容包括食品中的防腐剂、甜味剂、着色剂、抗氧化剂、漂白剂和发色剂等(引文71篇)。     

反相高效液相色谱法测定食品中甜蜜素

甜蜜素（环己氨基磺酸钠）可与亚硝酸反应生成环已醇亚硝酸酯,正已烷萃取后与基体分离,经反相高效液相分离,紫外检测器检出,灵敏度高,准确度好,常见的食品添加剂均无干扰,适用于大部分食品样品的测定。     

食品添加剂检测的实验设计与实证分析

针对质量管理工程专业“仪器分析实验”课程教学改革的现状,以“紫外-可见分光光度计结合Matlab软件预测饮料中人造甜味剂的浓度”为例,介绍了Matlab软件用于实验数据处理的方法,探讨了Matlab软件引入实验教学的优势。实践证明,Matlab的运用减轻了工作,方便了教与学,为教师充分运用现代技术手段探索质量管理类专业“仪器分析实验”教学改革提供了新思路。     

食品中氨基甲酸酯农药残留的分析方法

综述了近年来食品中氨基甲酸酯农药残留的分析方法。分别对样品预处理、色谱检测方法以及近年来发展起来的新技术,如超临界流体色谱、色质联用及一些非色谱技术如免疫检测、生物传感器等进行了讨论,并对农残检测的发展前景进行了展望。     

碳点荧光探针的制备及其在食品分析中的应用

碳点作为一种新型荧光碳纳米材料,具有优良的光学性能和小尺寸特性,以及良好的生物相容性、低毒性以及易于实现表面功能化等特点,是潜在的可以代替传统半导体量子点等荧光探针的良好选择.基于其独特的荧光特性和高灵敏度,碳点荧光探针在食品分析领域具有很好的应用潜力.本文对近年来荧光碳点的研究进展进行了综述,简述碳点的性能并对碳点的制备方法进行总结对比,重点介绍了碳点荧光探针在食品分析领域的应用,对目前碳点应用的限制进行了分析,对其发展前景和展望.     

Flow-Based Methods with Chemiluminescence Detection for Food and Environmental Analysis: A Review

This paper presents an overview of flow-based methods in food and environmental analysis using chemiluminescence (CL) detection covering the period from 2005 to the present. The review discussses both automated flow methods of analysis [such as flow-injection analysis (FIA), sequential-injection analysis (SIA) and their variants] and separation techniques [liquid chromatography (LC) and capillary electrophoresis (CE) coupled to CL detection]. The most widely used CL reactions are presented together with representative applications in food and environmental analysis (determination of naturally occurring compounds, contaminants, additives as well as determination of inorganic and organic compounds).     

功能化纳米材料的制备及在食品安全检测中的应用研究进展

纳米材料研究的飞速发展为解决食品安全检测所面临的问题提供了很好的理论基础和技术支持。功能化纳米材料与传统检测方法的结合,衍生出具有高灵敏、高通量、快速检测的方法,在食品中有毒有害微生物、化学残留物以及毒素的检测方面的应用正逐渐引起人们的重视。本文对基于免疫方法的常见功能化纳米材料在食品安全检测中的应用的研究近况进行了综述。     

Food irradiation—past, present and future

A review is presented of historical developments, the present situation, and expected future developments in the field of food irradiation. Acceptance of the process in different parts of the world is not uniform. In the USA and in some other countries where health authorities actively encourage the use of this technology, commercial application has greatly advanced in recent years. In contrast, progress in the European Union is still slow.     

生物,环境样品和食品中铅的痕量分析

主要根据近七年来发表的有关论文，综述了我国生物、环境样品和食品中铅和痕量分析技术进展，内容包括分子光谱、原子光谱、电化学和其他分析方法，以及联用技术和前处理等方面，收集文献３９３篇。     

Progresses of Magnetic Relaxation Switch Sensor in Medical Diagnosis and Food Safety Analysis

Fast and accurate detection of complex samples in either medical diagnosis or food safety analysis are of great significance for the safeguarding of human health. Magnetic relaxation switches (MRS) technique based on superparamagnetic nanoparticles (SMP) is the combination of nano-biotechnology, nuclear magnetic resonance, chemistry and immunoassay. MRS assay has the characteristics of high sensitivity and specificity, as well as nondestructive and time-saving, and can be used in turbid complex samples. In this paper, with a brief discussion about the detection theory of superparamagnetic nanosensor, the target type, structural characteristics, limit of detection, state of magnetic nanoparticles and the change of T₂ value of MRS were reviewed. The research progresses of magnetic relaxation switch sensor in medical diagnosis of different biomarkers and the analysis of food hazard factor were also summarized. Accordingly, future research targets from three aspects, e.g., preparation and modification of magnetic nanoparticles, the improvement of detection sensitivity and construction of high flux magnetic relaxation switch sensor, were put forward.     

Quality-control materials in the USDA National Food and Nutrient Analysis Program (NFNAP)

The US Department of Agriculture (USDA) Nutrient Data Laboratory (NDL) develops and maintains the USDA National Nutrient Databank System (NDBS). Data are released from the NDBS for scientific and public use through the USDA National Nutrient Database for Standard Reference (SR) (). In 1997 the NDL initiated the National Food and Nutrient Analysis Program (NFNAP) to update and expand its food-composition data. The program included: 1) nationwide probability-based sampling of foods; 2) central processing and archiving of food samples; 3) analysis of food components at commercial, government, and university laboratories; 4) incorporation of new analytical data into the NDBS; and 5) dissemination of these data to the scientific community. A key feature and strength of the NFNAP was a rigorous quality-control program that enabled independent verification of the accuracy and precision of analytical results. Custom-made food-control composites and/or commercially available certified reference materials were sent to the laboratories, blinded, with the samples. Data for these materials were essential to ongoing monitoring of analytical work, to identify and resolve suspected analytical problems, to ensure the accuracy and precision of results for the NFNAP food samples.