浅析生物传感器在食品分析中的应用

论述了生物传感器在食品检测中的应用,包括主成分分析以及在食品安全方面的应用,并对生物传感器以后的发展进行了展望.     

生物传感器在食品分析中的应用

生物传感器技术具有专一、灵敏、响应快等特点,在食品检测领域有广阔的应用前景.对生物传感器在食品分析检测中的应用进行综述,探讨生物传感器的发展动向及应用前景.     

生物传感器及其在食品工业中的应用

生物传感器的是一种以生物原件为基础的新型传感器，具有以往传感器许多不具备的优良特性．本文阐释了生物传感器的原理、种类与特点，并讨论了生物传感器在食品工业方面的应用现状，对其应用前景进行了展望。     

丝网印刷生物传感器在食品分析中的应用

丝网印刷生物传感器因其成本低,耗时短,微型化等优点,近年来在食品分析领域得到广泛应用.本文对丝网印刷电极的原理、制作过程进行了介绍,并综述了丝网印刷生物传感器在食品分析领域的研究进展,探讨了其在食品分析领域的应用前景.     

生物传感器在食品安全检测中的应用与研究进展

生物传感器法以其特异性强,反应快速,成本低等优点在食品安全检测领域发挥重要作用.生物传感器可以完成对食品污染物快速、高效的现场检测.介绍生物传感器在食品安全领域的应用.     

生物传感技术及传感器在食品工业中的应用

生物传感器作为新一代的分析工具备受人们关注,寻找一种优良的检测方法成为当前食品安全监督部门的当务之急。生物传感器技术具有快速、灵敏、特异、简便等特点,详细介绍了生物传感器在食品工业中的应用,主要包括在食品品质、成分、安全性方面的应用,并探讨了生物传感器今后的发展趋势。本文对生物传感器在食品中的细菌、毒素、农药残留等问题的应用进行综述,并简要探讨生物传感器在食品生物安全中的发展前景。     

利用基于表面等离子体共振的生物光学传感器检测牛奶中氨苄青霉素残留的方法

采用表面等离子体共振的生物光学传感器的方法,利用生物分子相互作用分析原理及传感器对折射率的高度敏感性,结合传感器金膜表面绑定抗氨苄青霉素单克隆抗体的技术,实现了牛奶中氨苄青霉素含量的定量检测.实验中利用微型表面等离子体共振传感器构建了测量系统,介绍了传感器表面的处理方法,并对氨苄青霉素浓度为0、10、50、100ng/ml的牛奶样品进行了测量,通过对测量结果进行分析,得到了不同氨苄青霉素浓度的传感器响应图,对牛奶中氨苄青霉素含量的最低检测限达到了50ne/ml.结果表明,基于表面等离子体共振的光学生物传感器在牛奶抗生素药物残留检测方面具有很好的应用前景.     

生物传感器在食品分析中的应用与研究进展

食品工业为保证产品的质量以及对加工过程进行人为的控制,需要比较合适的分析方法。生物传感器藉其具有较好的敏感性、特异性,操作简便、响应速度快等优势正逐步挑战传统分析方法的主体地位。本文综述了生物传感器在食品成分分析、食品添加剂的测定及食品卫生检测等方面的应用,并对生物传感器的组成与工作原理进行了简短的叙述,并且展望了生物传感器在食品分析领域中的应用前景。     

生物传感器在食品分析中的应用与研究进展

食品工业为保证产品的质量以及对加工过程进行人为的控制，需要比较合适的分析方法。生物传感器藉其具有较好的敏感性、特异性，操作简便、响应速度快等优势正逐步挑战传统分析方法的主体地位。本文综述了生物传感器在食品成分分析、食品添加剂的测定及食品卫生检测等方面的应用，并对生物传感器的组成与工作原理进行了简短的叙述，并且展望了生物传感器在食品分析领域中的应用前景。     

电化学酶免疫传感器在食品安全检测中的研究进展

电化学酶免疫传感器是一种标记型的免疫传感器,它结合了酶的放大作用和免疫传感器的灵敏度及特异性,是近几年来研究最多、发展最快,应用最广的一种免疫传感器.本文综述了电化学酶免疫传感器的特点及其在食品安全领域(包括食源性致病菌、生物毒素、药物残留等)的研究应用进展,并且对酶免疫传感器的发展前景进行了展望.     

Reliable identification of grapevine rootstock varieties using RAPD PCR on woody samples

Since grapevine ( Vitis spp .) rootstock material is being traded increasingly as disbudded woody material a lack of distinctive morphological features on such material necessitates an alternative and reliable means of identification. Methods described here were developed for rapid and efficient extraction of DNA from woody samples rich in phenolic compounds and polysaccharides, and for subsequent identification of varieties by RAPD PCR. Using these methods, and with the application of only one selected RAPD primer, we were able to differentiate sixteen rootstock varieties, including the seven varieties most commonly used in Germany. Problems commonly encountered with reproducibility of RAPD patterns were avoided by choosing primers with a dinucleotide sequence and a high G/C content that allowed a rather high annealing temperature of 45°C. Methods described here should also be useful for other horticultural crops, especially those with woody tissues rich in phenolic compounds and polysaccharides.     

An internet compendium of analytical methods and spectroscopic information for monomers and additives used in food packaging plastics

An internet website (http://cpf.jrc.it/smt/) has been produced as a means of dissemination of methods of analysis and supporting spectroscopic information on monomers and additives used for food contact materials (principally packaging). The site which is aimed primarily at assisting food control laboratories in the European Union contains analytical information on monomers, starting substances and additives used in the manufacture of plastics materials. A searchable index is provided giving PM and CAS numbers for each of 255 substances. For each substance a data sheet gives regulatory information, chemical structures, physico-chemical information and background information on the use of the substance in particular plastics, and the food packaging applications. For monomers and starting substances (155 compounds) the infra-red and mass spectra are provided, and for additives (100 compounds); additionally proton NMR are available for about 50% of the entries. Where analytical methods have been developed for determining these substances as residual amounts in plastics or as trace amounts in food simulants these methods are also on the website. All information is provided in portable document file (PDF) format which means that high quality copies can be readily printed, using freely available Adobe Acrobat Reader software. The website will in future be maintained and up-dated by the European Commission's Joint Research Centre (JRC) as new substances are authorized for use by the European Commission (DG-ENTR formerly DGIII). Where analytical laboratories (food control or other) require reference substances these can be obtained free-ofcharge from a reference collection housed at the JRC and maintained in conjunction with this website compendium.     

Aroma characterization of various apricot varieties using headspace–solid phase microextraction combined with gas chromatography–mass spectrometry and gas chromatography–olfactometry

The characterization of the aromatic profile of several apricot cultivars with molecular tracers in order to obtain objective data concerning the aromatic quality of this fruit was undertaken using headspace–solid phase microextraction (HS–SPME). Six apricot cultivars were selected according to their organoleptic characteristics: Iranien, Orangered, Goldrich, Hargrand, Rouge du Roussillon and A4025. The aromatic intensity of these varieties measured by HS–SPME–Olfactometry were defined and classified according to the presence and the intensity of grassy, fruity and apricot like notes. In the six varieties, 23 common volatile compounds were identified by HS–SPME–GC–MS. Finally, 10 compounds, ethyl acetate, hexyl acetate, limonene, β-cyclocitral, γ-decalactone, 6-methyl-5-hepten-2-one, linalool, β-ionone, menthone and (E)-hexen-2-al were recognized by HS–SPME–GC–O as responsible of the aromatic notes involved in apricot aroma and considered as molecular tracers of apricot aromatic quality which could be utilized to discriminate apricot varieties.     

Tests of potential functional barriers for laminated multilayer food packages. Part I: Low molecular weight permeants

The advent of the functional barrier concept in food packaging has brought with it a requirement for fast tests of permeation through potential barrier materials. In such tests it would be convenient for both foodstuffs and materials below the functional barrier (sub-barrier materials) to be represented by standard simulants. By means of inverse gas chromatography, liquid paraffin spiked with appropriate permeants was considered as a potential simulant of sub-barrier materials based on polypropylene (PP) or similar polyolefins. Experiments were performed to characterize the kinetics of the permeation of low molecular weight model permeants (octene, toluene and isopropanol) from liquid paraffin, through a surrogate potential functional barrier (25 μm-thick oriented PP) into the food simulants olive oil and 3% (w/v) acetic acid. These permeation results were interpreted in terms of three permeation kinetic models regarding the solubility of a particular model permeant in the post-barrier medium (i.e. the food simulant). The results obtained justify the development and evaluation of liquid sub-barrier simulants that would allow flexible yet rigorous testing of new laminated multilayer packaging materials.     

Analysis of benzo[a]pyrene in spiked fatty foods by second derivative synchronous spectrofluorimetry after microwave-assisted treatment of samples

A simple, rapid and inexpensive method has been developed for the determination of benzo[a     

The development of reference materials for paralytic shellfish poisoning toxins in lyophilized mussel. II: Certification study

This paper describes the second part of a project undertaken to develop certified mussel reference materials for paralytic shellfish poisoning toxins. In the first part two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin and decarbamoyl-saxitoxin in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the certification exercise. Fifteen laboratories participated in this certification study and were asked to measure saxitoxin and decarbamoyl-saxitoxin in rehydrated lyophilized mussel material and in a saxitoxin-enriched mussel material. The participants were allowed to use a method of their choice but with an extraction procedure to be strictly followed. The study included extra experiments to verify the detection limits for both saxitoxin and decarbamoyl-saxitoxin. Most participants (13 of 15) were able to meet all the criteria set for the certification study. Results for saxitoxin.2HCl yielded a certified mass fraction of <0.07 mg/kg in the rehydrated lyophilized mussels. Results obtained for decarbamoyl-saxitoxin.2HCl yielded a certified mass fraction of 1.59+/-0.20 mg/kg. The results for saxitoxin.2HCl in enriched blank mussel yielded a certified mass fraction of 0.48 +/- 0.06 mg/kg. These certified reference materials for paralytic shellfish poisoning toxins in lyophilized mussel material are the first available for laboratories to test their method for accuracy and performance.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the     

Chinese CTP Market

According to Printing and Printing Equipment Industries Association of China（PEIAC）＇s statistics to the plate manufucturer in China, in 2013, the actual offset plate production has reached 346 million square meters in China. Among them, the CTP production volume was 245 million square meters, up by 11% than that of last year; the total sales of the CTP plate was 239 million square meters, up by 13%.     

Preparatory Work of Print China 2015 is Going Smoothly

正Held at Guangdong Modern International Exhibition Center,Print China 2015 will cover 7exhibition halls,besides the original Hall No.3,4,5,6,7,the newly built F zone of Hall 3 will be used too.The total area will be140,000 square meters.Hall 3:Offset and large printing equipment,package printing equipment,post press