转基因食品分析检测技术研究进展

正转基因技术在近年来发展十分迅猛,转基因植物、转基因动物不断被研究出来,随着转基因技术的不断成熟,转基因食品的市场逐渐发展。但随着当前转基因食品安全性问题的逐渐凸显,世界对于转基因食品的安全性检测也越来越重视,转基因食品分析检测技术也逐渐研究改进,以为转基因食品安全性检测提供扎实的技术基础,因此,积极研究当前转基因食品分析检测技术的研究进展对于转基因食品安全问题和转基因技术的进一步发展都十分重要。转基因食品及其分析检测技术     

转基因食品检测技术的应用与发展Ⅲ.检测技术的影响因素和发展方向分析

本文着重概述了转基因食品检测技术的影响因素,展望了转基因食品检测技术的发展方向,对指导转基因食品的检测具有重要意义。     

生物化学快速检测技术在转基因食品检测中的应用研究

近年来转基因食品发展迅猛,种类也越来越多,转基因食品的安全问题成为人们关注的重要问题。对生物化学快速检测技术在转基因食品检测中的应用进行研究,分析了生物化学快速检测技术能够通过检测出转基因食品中的标准质粒分子判断食品的安全性,介绍了生物化学技术检测转基因食品的详细流程。通过研究发现生物化学快速检测技术能够有效检测转基因食品中所含物质,保证转基因食品的安全性。     

转基因食品的安全性评价及检测技术进展

就转基因食品的安全性、转基因化生物的检测进展以及对转基因食品安全性的评价进行了综述,最后对转基因食品未来的发展进行了展望。     

转基因食品及其检测技术的发展现状

概述了转基因食品的国内外发展现状 ,以及各国对转基因食品的不同管理模式。还着重介绍了转基因食品检测技术的基本方法、发展方向以及所面临的一些问题。     

应用于转基因食品检测的PCR技术及其进展

近几年全球转基因作物种植面积连年大幅度增加,随之产生的转基因食品更是琳琅满目,然而在转基因食品安全性尚无定论情况下,转基因食品的检测技术便显得尤为重要。在转基因食品检测中,PCR技术由于具有快速、灵敏、准确等一系列优点,从而得到了迅猛发展。本文介绍了转基因食品检测中使用的各种PCR技术,并根据它们各自的原理对其优缺点进行了比较和探讨,同时阐述了检测过程中应该注意的一些问题。此外,一些新技术与PCR的结合,对PCR技术的完善和发展提供了有力的支持,并在转基因食品检测中取得了良好的效果。     

转基因食品及其安全性研究进展

随着生物技术的发展，转基因食品逐渐走进我们的生活。本文概述了转基因食品及其类型。简要回顾了转基因食品的国内外发展现状，探讨了国际上倍受关注的转基因食品安全性问题，详细阐述了转基因食品的功能及其检测技术，最后对转基因食品的发展前景进行了展望。     

转基因食品的安全性及其检测评价

转基因食品发展迅速,但其安全仍然是人们关注的焦点。目前,通常从生态安全、健康安全、伦理安全的角度评价转基因食品的安全,并据此制定国际评价标准。转基因食品的分析检测建立在蛋白质和基因水平上,蛋白检测主要基于免疫原理检测粗加工食品的转基因蛋白成分,基因检测则基于PCR检测食品是否含有目的基因。同时,一些新型食品检测技术也逐步应用于转基因食品的检测。     

转基因食品检测技术及其安全性评价

当前转基因食品的安全性问题已经越来越受到人们的广泛关注。本文介绍了转基因食品的发展现状,并对转基因食品的检测技术和安全性评价进行了全面的综述,为进一步开展转基因食品的定性检测及其安全性评价工作提供一定参考。     

转基因食品及其检测技术的发展现状

概述了转基因食品的国内外发展现状，以及各国对转基因食品的不同管理模式。还着重介绍了转基因食品检测技术的基本方法、发展方向以及所面临的一些问题。     

转基因食品及其检测技术的研究进展

基因工程通过DNA重组技术，能够获得有特殊生物遗传性状和功能的遗传工程生物体（GMO）。基因工程技术应用于农业、食品工程，产生了转基因食品。本文概述了转基因食品在国内外的发展状况，并简要介绍了转基因食品检测技术的原理、优缺点及应用情况。     

Effect of Ionizing Radiation on the Quantification of Genetically Modified Foods

The rapid spread of Genetically Modified (GM) crops globally and the mandatory labeling of GM food and feed imposed by many countries has led to the development of relevant detection techniques. Polymerase Chain Reaction (PCR) – based methods are presently the most effective and reliable for GM detection even in processed food products. This study evaluated the effect of electron beam irradiation, used for food pasteurization, on the detection and quantification of dry GM soyabean and maize products; qualitative and quantitative (real-time TaqMan^TM probe) PCR analysis showed that electron beam irradiation treatment, even at a high dose (10 kGy), did not affect the traceability of transgenes.     

转基因食品安全与环境分析

转基因食品可为人类的发展提供食品安全保障,它对人体健康基本是安全的。尽管转基因食品的生产与加工对生物多样性、土壤生态可能有一些影响,杀虫剂、除草剂等的使用会带来一些环境污染,但其拥有的优点也很明显。可通过完善转基因技术,降低转基因食品的不良效应,加强转基因食品的安全检测,健全转基因食品安全评价体系等措施来解决这些问题。     

复合PCR荧光检测方法检测转基因水稻品系

建立一种高通量的转基因复合聚合酶链式反应（polymerase chain reaction,PCR）荧光检测方法,该方法通过对转基因检测内源、外源及品系基因检测引物进行荧光标记,经复合PCR扩增和毛细管电泳荧光检测,实现特异性强、高通量检测。结果表明,复合PCR荧光检测方法检测4 种转基因水稻品系特异性好,并且灵敏度达到0.1%,可以在进出口检验检疫、食品安全监测等领域进行应用。     

Detection of GM Canola MS11, DP-073496-4, and MON88302 events using multiplex PCR coupled with capillary electrophoresis

As of 2020, 11 GM canola events have been authorized as food for humans in Korea. However, there are no simultaneous multiplex detection methods for 3 GM canola events (DP-073496-4, MON88302, and MS11). Thus, we established the multiplex polymerase chain reaction (PCR) method coupled with capillary electrophoresis to detect 3 GM canola events. To verify the specificity of event-specific primers, various GM crops of 3 GM soybean events, 6 GM maize events, 2 GM cotton events and 11 GM canola events were prepared. The limit of detection of the developed multiplex PCR was approximately 0.0125% for 3 GM canola events. Certified GM canola and stacked events were analyzed to validate the developed multiplex PCR. This study focuses on establishing multiplex PCR coupled with capillary electrophoresis for newly approved GM canola events and contributes to efficient monitoring GM canola samples in Korea.     

转基因水稻食用安全性评价国内外概况

转基因水稻的研制与开发已经达到了可商业化阶段,但是出于对其食用与环境安全性的忧虑,目前还没有国家批准转基因水稻商品化。我国已经发现有疑似转基因稻种出现在市场上,这就迫切要求我们加快对转基因水稻的安全性评价尤其是食用安全性评价的研究,建立相应的评价标准,以规范转基因水稻的商业化及生产。本文主要从转基因水稻的营养成分实质等同性分析,动物营养学评价,体内及体外毒理学评价,致敏性评价及外源基因的水平转移五个角度对转基因水稻的国内外食用安全性评价工作进行了综述,以期为以后的食用安全性评价及标准体系的建立提供参考。     

我国食品转基因标识研究

21世纪是生物技术的世纪,转基因食品的研究与开发已经成为学术界乃至广大公众的话题。转基因作物的成本低、产量高;具有抗除草荆、抗虫和抗病毒等特性;提高转基因食品的品质和营养价值;转基因食品便于运输、贮藏;增加保鲜性。转基因食品在给人类带来巨大效益的同时也存在着各种风险以及问题。转基因食品是否安全?转基因食品是否应该进行标识?对转基因食品应该如何标识才能保障广大消费者利益?本文正是在这一大背景下。在论证转基因食品标识必要性的基础上论述了美国和欧盟两大发达国家的标识制度;分析了我国转基因食品标识制度的现状,同时借鉴发达国家经验指出了转基因食品标识所存在的问题并在此基础上提出了一系列建议措施。     

Qualitative and Quantitative Detection of Protein and Genetic Traits in Genetically Modified Food

Due to the market introduction of genetically modified organisms (GMOs) in crops, foods, and ingredients, legislation worldwide came face to face with the question of the use and labeling requirements on GMO crops and their derivatives. In this review, protein- and DNA-based methods, such as enzyme-linked immunosorbent assay, western blots, and qualitative and quantitative polymerase chain reaction PCR (Q-PCR) are reviewed. Qualitative detection methods for genetically modified (GM) sequences in foods have evolved rapidly during the past years. The sensitivity of these systems is extremely high, even for processed foodstuffs. However, the availability of quantitative detection methods for GMO analysis is an important prerequisite for the introduction of threshold limits for GMOs in food. The recently introduced labeling threshold for GMOs in food ingredients by the European Union has forced official food control laboratories to apply quantitative PCR methods. Taking the precision of quantitative PCR detection methods into account, suitable sample plans and sample sizes for GMO analysis are discussed. As quantitative GMO detection methods measure GMO contents of samples in relation to reference material, priority must be given to international agreements and standardization on certified reference materials. The rapidly increasing number of GM foods on the market demands the development of more advanced multidetection systems, such as microarray technology. Challenges and problems arising from the inability to detect GM foods for which the modified sequence is unknown, the lengthy standardization procedures, and the need to continuously update databases comprising commercially available GM foods and the respective detection strategies are also discussed.     

Establishment of a quadruplex real-time PCR for screening of genetically modified tomatoes

With the increase in number of the genetically modified (GM) crops authorized worldwide and specific labeling legislation established by many countries, a reliable and efficient method for routine screening of raw material or processed food products needs to be developed. In this paper, a quadruplex quantitative real-time PCR (qPCR) system is described which allows simultaneous detection of one tomato endogenous gene and three most frequently used transgenic elements in GM products: cauliflower mosaic virus 35S promoter, Agrobacterium tumefaciens nopaline synthase terminator, and neomycin phosphotransferase II gene. The specificities of the assays are optimized and validated. In the quadruplex qPCR system, the detection ranges for all of the four genes were determined to be 8–80,000 copies per reaction. Finally, the established detection system was applied in amplification of exogenous and endogenous genes from 33 raw materials and 35 processed products samples. The results indicate that quadruplex qPCR method is feasible for screening of GM tomato products, even for some processed food. As this detection system could be easily applied to the detection of transgenic elements in other plant species, we expect it will meet the challenges of routine GM crop detection resulting from a rapid increase in the number of GM crops in the future.     

肉制品中致病菌的在线检验技术

细菌性食物中毒是食物中毒的重要因素。以前国内检测食品中致病菌主要采用传统的培养方法,操作繁琐,检测时间较长。现在一些致病微生物的快速检测技术得到了迅速地发展。本文主要对肉制品中致病菌的检验进行综述,如免疫学中的酶免疫分析、荧光免疫分析等;分子生物学中的核酸探针和聚合酶链反应的检测技术等,旨在对肉制品中致病菌的在线检验技术做出较全面的总结,为食品安全提供理论依据。