低温升超微粉碎机及其研究

微粉碎机是粉体工业赖以发展的主要设备。微粉碎与超微粉碎是近四、五十年来新兴的粉体工业项目。作业的目的是将物料颗粒由3mm以上粉碎到0.01mm粒级(通常是10~100μm,称微粉碎)或粉碎至0.001mm粒级(通常是1~10μm,称为超微粉碎)。微粉碎的目的是提高其表面积,以提高物料的分散性、吸附性、溶解度、化学活性等,从而改善粉体的物理、化学性能。微粉有反应性强,热、光、电、磁性能发生显著变化的优点。近半个世纪以来,日、美、德、     

鳗鱼饲料加工中影响微粉碎机工作性能的因素

鳗鱼饲料加工中影响微粉碎机工作性能的因素国内贸易部无锡科学研究设计院（２１４０３５）姚永顺大家知道：微粉碎机的特性，原料性质和成品细度构成一个三角形关系，三者之中有一个变动就会影响其他二个方面。对于鳗鱼饲料来讲，成鳗的细度（６０目过９８５％）是一定...     

WFJ—15型立轴内分级式微粉碎机

本文对该机的主要结构及工作原理作了介绍和探讨,推导了分级轮气流速度方程和导出了不产生倒流的最小风量,对冷却和冻结微粉碎也作了初步介绍。     

食品原料微细化机械刮板（刀）式粉碎机的特征与应用

近年来，食品生产中的副产物经微粉化处理后有效综合利用的研究开发盛行，因为这些研究成果关系到环境问题。制粉过程中由小麦表皮的麦麸(或称麦糠)是主要副产物，麦麸的综合利用是很重要的课题之一。     

立轴内分级式微粉碎机分级临界粒径的理论分析与计算

介绍了立轴内分级微粉碎机的结构，工作原理。推导了分级临界粒径的计算公式，分析了影响临界粒径的各种因素。     

骨头粉碎机

沈阳市肉联厂原加工骨粉的方法为,将动物骨头如猪头骨、牛骨等晾晒干,然后人工将其敲成细小颗粒,制成骨粉,做为动物饲料.现在肉联厂每天需要处理动物骨头5t,按每人每天加工0.5t计算,则需要10人才能完成,生产旺季需要的人员还要多.操作原始、工人劳动强度大、效率低、产品成本大、粉尘污染严重,不符合劳动部门的要求,针对以上问题,设计出一台骨头粉碎机.     

谷壳粉碎机的结构设计要求

本文通过对进料方式、粉碎室结构、产量配套等方面的分析，表明了不是以谷壳为粉碎对象的一般粉碎机不能满足粉碎谷壳的全部要求，论述了谷壳粉碎机的设计要求，重点介绍了ＺＸＦ５６系列自吸式谷壳粉碎机的结构设计方案。达到了清粮排杂、节能降耗、一机多用、产量配套之效果。     

玉米乙醇生产工艺中的几种干法粉碎技术方案分析

在玉米乙醇生产中,原料粉碎过程主要采用大负压、小负压、微负压等几种干法粉碎工艺,通过对不同处理方案的工艺流程、优缺点差异、影响因素进行深入分析,提出选择最优粉碎方案的思考与建议,与行业技术人员共同切磋交流.     

粉碎机耐磨锤片的试验研究

本文对饲料粉碎机锤片进行了喷焊工艺试验研究，指出采用等离子焰或氧－乙炔焰喷焊是提高饲料粉碎机锤片耐磨性的有效途径，可用于工业化生产。     

宽幅饲料粉碎机的试验研究

提出了宽幅饲料粉碎机的特点和参数选择的方法。并对该机进行了试验分析。为宽幅饲料粉碎机的设计和研究提供了依据。     

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