稳定性二氧化氯在啤酒生产中的应用

１．稳定性二氧化氯概述 二氧化氯是九十年代国际上公认的性能优良、效果显著的消毒灭菌剂、食品保鲜剂、水质净化剂、除臭防腐剂。己被世界卫生组织（ＷＨＯ）列为高效安全消毒剂。１９８７年被美国食品药物管理局批准为食品加工设备消毒剂，１９８９年我国食品卫生监督所批准其为食品消毒和保鲜剂后，在我国得到推广应用，并有大连、江西、上海、北京等多家企业生产出稳定性二氧化氯。２．二氧化氯的消毒灭菌机理 二氧化氯分子山一个氯原子和两个氧原子组成，氯原子以二个配位键与二个氧原子结合，其最外电子层还存在着一个不成对的自由电…     

试论应用在食品工业中的臭氧消毒灭菌技术

臭氧消毒灭菌技术具有杀毒率高、操作便捷以及应用范围广等一系列优势,已被广泛应用于水净化、空气消毒以及食品加工等多个领域。尤其是在食品工业中,臭氧消毒灭菌技术解决了以往杀毒成本较高、杀毒不彻底等问题,相较于其他消毒方式在普遍推广上具有明显优势。但同时臭氧消毒灭菌技术也存在着一定的问题,限制了它的应用与推广。基于此,本文从解析臭氧消毒灭菌技术入手,对臭氧消毒灭菌技术在食品工业中的应用现状及应用前景进行分析。     

稳定性二氧化氯在啤酒生产消毒中的应用

啤酒生产过程传统消毒，灭菌剂为碱(片碱或液碱)、甲栓类。由于其腐蚀性，有害性及对产品质量的影响，极需一种替代品。随着稳定性二氧化氯研制成功，其性能得到国际社会的公认，成为性能优良，效果显著的消毒灭菌剂、食品添加剂、食品保鲜剂、水果净化剂、除臭防腐剂。已被世界卫生组织(WHO)列为高效安全消毒剂。我国也于1998年批准为食品消毒剂、保鲜剂。被广泛应用于食品加工业、医疗卫生、养殖业的流水线灭菌收到良好的效果。     

二氧化氯及其在食品工业中的应用

二氧化氯具有杀菌消毒、漂白防腐、除臭保鲜等多种功能，本文简要介绍了二氧化氯产品，及其杀菌消毒机理和在食品发酵工业中的应用。     

稳定型二氧化氯的性质与制备技术

稳定性二氧化氯作为一种新型的水处理剂和消毒灭菌剂，备受人们的关注。在国外，20世纪80年代就已被推广应用于各种场合的消毒、杀菌、除臭，国内近几年才开始研究推广应用。阐述了二氧化氯的结构与性质、杀菌机理、制备技术以及稳定性二氧化氯在国内外的应用研究。     

快速检测二氧化氯对牛奶灭菌效果的方法

通过对不同品牌的二氧化氯消毒产品作用于未处理的鲜奶样,从其微生物结果可以判定活性二氧化氯的灭菌效果。     

气体二氧化氯在果蔬杀菌保鲜方面的研究与应用

二氧化氯是一种国际上公认的性能优良、安全无公害的杀菌消毒剂和食品保鲜剂。国内关于二氧化氯在果蔬保鲜领域的研究多局限于液体二氧化氯,气体二氧化氯在果蔬保鲜方面的研究相对较少。气体二氧化氯较液体二氧化氯有许多优势,在果蔬杀菌保鲜方面有更加广阔的应用前景。本文综述了二氧化氯的杀菌保鲜机理及气体二氧化氯的特性与优点,总结了近年来国内外关于气体二氧化氯在果蔬杀菌保鲜方面的研究,并对其应用前景进行了展望。     

乳制品企业微生物控制发展新趋势二氧化氯消毒剂在乳品加工领域中的应用

<正> 二氧化氯消毒剂概况 二氧化氯是目前国际上公认的最新一代的高效、广谱、安全的杀菌、保鲜剂,是氯制剂最理想的替代品,在世界发达国家中已得到了广泛的应用。发达国家的有关组织,如美国环境保护局、食品药物管理局、美国农业部均批准和推荐二氧化氯用于食品、食品加工、制药、医院、公共环境等的消毒、防霉和食品的防腐保鲜等。世界卫生组织(WHO)也已将二氧化氯列为A1级安全高效消毒剂。近年来,我国也开始重视它的推广和应用。国家卫生部已批准二氧化氯为消毒剂和     

稳定性二氧化氯在微型啤酒生产线中的应用

稳定性二氧化氯是欧美、日本等国推崇的第四代消毒灭菌剂，具有高效杀菌、消毒、保鲜、安全方便等特点，通过在微型啤酒生产线中的应用，有效地改善了酒店、宾馆的环境，提高了自酿鲜啤酒的质量。     

稳定性二氧化氯在微型啤酒生产线中的应用

稳定性二氧化氯是欧美、日本等国推崇的第四消毒灭菌剂，具有高效杀菌、消毒保鲜、安全方便等特点，通过在微型啤酒生产线中的应用，有效地改善了酒店、宾馆的环境，提高了自酿鲜啤酒的质量。     

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