变性淀粉在午餐肉中的应用效果研究

将木薯变性淀粉与玉米原淀粉在午餐肉中的应用效果进行了对比,结果表明,添加了变性淀粉的产品在弹性、组织状态、口感及贮存稳定性方面明显优于玉米原淀粉。     

变性淀粉在调味品加工中的应用研究进展

目前变性淀粉作为食品增稠剂已应用于各类食品加工中,可以有效提高产品的品质,改善产品的组织状态,延长加工食品的货架期。近年来,随着调味品加工业的快速发展,变性淀粉也广泛应用调味品的加工中。文章总结了近10年来变性淀粉在调味品加工中的应用研究情况,为推动我国变性淀粉在调味品加工中的进一步应用提供了理论参考。     

中国食品科技现状概要(二)

◇大豆加工产业化示范最新科技成果的产业化使大豆加工业得到迅猛发展。大豆低聚糖、大豆蛋白肽、大豆磷脂、大豆异黄酮等具有高附加值的产品年生产能力达到５万吨；大豆分离蛋白、浓缩蛋白、组织蛋白的开发利用出现良好发展势头，２００１年产量３万吨以上。大豆低聚糖等高科技成果的产业化，带动了６１０万农户年户均增收１２００元。◇玉米变性淀粉加工产业化示范玉米生产变性淀粉产品附加值高，是玉米原价值的几十倍。随着变性淀粉广泛应用，目前世界变性淀粉总产量达３００多万吨，其中７０％以上是由玉米加工而成，品种上千个。２００…     

糯玉米交联淀粉在午餐肉罐头中的应用效果研究

本研究将糯玉米交联淀粉与普通交联淀粉和普通玉米淀粉在午餐肉中应用效果进行对比。结果表明：添加10％糯玉米变性淀粉的产品在色泽、弹性、口感，组织状态及贮藏稳定性方面明显优于对照。     

变性淀粉对搅拌型酸奶增稠作用的研究

通过变性淀粉对搅拌型酸奶增稠作用进行的研究表明，在搅拌型酸奶生产是变性淀粉与果胶复配（果胶0．15％，变性淀粉0．5％），作为增稠剂，稳定剂，其产品对于热，酸和剪切力具有高度稳定性，同时搅拌型酸奶在2－7℃进行后发酵时，产品随着变性淀粉颗粒的吸水膨胀，粘度上升，达到最高值。     

变性淀粉生产技术发展动态

变性淀粉是指在淀粉具有的固有特性基础上，为改善其性能和扩大其应用范围，而利用物理方法、湿法和酶法改变淀粉的天然性质，增加其性能或引起新的特性而制备的淀粉衍生物。经过近两个世纪的发展，变性淀粉已经在造纸、食品、医药、化工等各个领域得到广泛应用。变性淀粉也从过去单一品种发展到今天的2000多种，即使在国内也已经有360多种。产品的应用也从过去的原料发展到今天的原料、辅料及各种添加剂和改良剂。并且随着科技的不断发展，生物技术的成熟和应用，变性淀粉的前景会更加美好。     

变性淀粉的化学进展

淀粉是一类资源丰富、价格便宜、使用方便，可化学变性和生物降解的产品。淀粉是由葡萄糖剩基连接而成的多糖，分子中具有数目众多的醇羟基，能与众多的化学试剂起反应生成酯或醚衍类生物。随着化学试剂的不同、反应条件的不同、取代程度的不同，能制得不同的变性淀粉产品。这些产品具有不同的性质，能符合各种不同应用领域的要求。变性淀粉自19世纪末出现以来，近30年间取得高速的发展。目前已有淀粉和变性淀粉2000多个品种，美国每年工业应用的变性淀粉就有200多万吨。本人去年访问美国，参观部份学校和研究机构。本文就80年代以来，国际…     

国外马铃薯的开发概况（1）

比较系统地阐述了马铃薯的食用价值，淀粉行性以及马铃薯的食品，淀粉及其副产加工产品，变性淀粉产品，淀粉糖产品，淀粉发酵产品的用途，有关配方与生产工艺过程，对促进马铃薯生产和开发利用有指导意义。     

国内外马铃薯的开发概况（2）

比较系统地阐述了马铃薯的食用价值，淀粉特性以及马铃薯的食品，淀粉及其副产加工产品、变性淀粉产品、淀粉糖产品、淀粉发酵产品的用途，有关配方与生产工艺过程，对促进马铃薯生产和开发利用有指导意义。     

变性淀粉及谷朊粉对面团特性的影响研究

研究淀粉及变性淀粉、谷朊粉对面团特性的影响。结果显示：在面粉中，按4％的比例添加马铃薯变性淀粉，对面团的稳定时间、弱化度及抗张强度等均有显著的影响（P〈0．01）；添加6％木薯变性淀粉，面团抗张力增加26、6％；添加3％的谷朊粉，面团形成时间及稳定时间均有较大增加。木薯原淀粉及其变性淀粉等对面团的特性影响不大。     

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