甜菜多倍体新品种双丰316的选育

甜菜多倍体新品种双丰３１６号由四倍双体双丰４１５的多个系号与二倍体７２０８Ｇ杂交育成。属于工艺品质优良的多粒标准型多倍体品种。其糖汁纯度较统一照品种甜研３０１提高两个百分点，α－氮基氮含量低２１．７％、含量低１％、钠含量低１２．５％，糖份回收率高，增产增糖效果。该品种在黑龙江省 品种区域试验及生产试验中其块根产量、含糖率和产糖量比统一对照品种甜研３０１提高６．８％－８．７％、０．５％－０．４２％和     

D301A型自动缫工长一日工作志

Ｄ３０１Ａ型自动缫工长一日工作志王挂花（山东淄博制丝厂）Ｄ３０１Ａ型自动缫丝机在全国广泛推广后，使用单位的管理人员都在积极探讨如何使用和管理，使其发挥最佳的社会效益和经济效益。通过两年多的努力，我们逐步摸索出适应Ｄ３０１Ａ型自动缫丝机管理的方法，实践...     

浅谈广东D301A型自动缫丝机的改造

浅谈广东Ｄ３０１Ａ型自动缫丝机的改造蔡亚飞（江苏射阳县丝绸厂）我厂于１９９０年购进广东Ｄ３０１Ａ型自动缫丝机８组，生产两年多来取得了较好的效益。但在使用过程中也发现了一些不足之处。为适应现代缫丝生产要求，多增经济效益，现将我们在生产实际中已改造或准备...     

D301G型（D301A型改进型）自动缫丝机性能初探

Ｄ３０１Ｇ型（Ｄ３０１Ａ型改进型）自动缫丝机性能初探江苏省东台市缫丝厂洪德岐为保证白厂丝质量，提高缫丝企业的综合经济效益，目前我国已有很多省、地区广泛使用能适应我国原料茧性能的Ｄ３０１Ａ型自动缫丝机。由于高科技迅猛发展，以及缫丝企业的使用经验和实用要...     

D301A型自动缫丝机保养工一日工作制

Ｄ３０１Ａ型自动缫丝机保养工一日工作制杜创义（山东淄博制丝厂）自Ｄ３０１Ａ型自动缫丝机投入使用以来，很快就以其合理的设计和优良的性能赢得了制丝企业的青睐。我厂自１９９２年７月投入使用了１４组Ｄ３０１Ａ型自动缫丝机，为充分发挥该机的优良性能，提高设备利...     

D301B型自动缫丝机主传动机构及特性

Ｄ３０１Ｂ型自动缫丝机主传动机构及特性陈华杭州纺织机械总厂研制开发的Ｄ３０１Ｂ型自动缫丝机，综合技术性能又在Ｄ３０１Ａ型基础上上了一个新台阶。改进后的主传动机构，性能更可靠，维修更方便，结构更合理，更有利于各种原料的适应性。一、Ｄ３０１Ｂ型自动缫丝机...     

D301A型自动缫丝机给茧机管理

Ｄ３０１Ａ型自动缫丝机给茧机管理陈国兵（江苏射阳丝绸厂）目前，国产各型给茧机均为移动式给茧机，尤以采用双爪捞茧机构的Ｄ３０１Ａ型给茧机使用较普遍，笔者根据我厂Ｄ３０１Ａ型给茧机的使用情况，就提高给茧机效率，满足缫丝工艺要求而言，认为须抓好以下几方面。...     

对GA301型双浆槽浆纱机存在问题的探讨

对ＧＡ３０１型双浆槽浆纱机存在问题的探讨周四新（河北保定一棉集团公司）ＧＡ３０１型双浆槽浆纱机是为发展阔幅高密纯棉及涤棉织物的需要而研制的，它为国产浆纱机替代进口起了一定的作用。从１９９３年至今，我厂已安装了３台ＧＡ３０１型浆纱机（型号分别是ＧＡ３０...     

甜菜多倍体新品种狼甜301的选育

甜菜多倍体新品种狼甜301由四倍体双丰1号与二倍体工农5号系统中的9×9品系杂交育成，属于抗逆性强、抗褐斑病性强的高糖型多位多倍作品种。该品种在内蒙古自治区甜菜品种区域试验及生产试验中其平均块根产量，含糖率和产糖量分别比对照品种工农5号提高3．7％～14．2％、1．32％～3．0％和12．3％～40．9％。褐斑病发病级数比对照低1．5～2．5级，具备较强的杂种优势、适应性广。该品种1995年由内蒙古自治区农作物品种审定委员会审定命名为“狼甜301”，1995年4月通过了中国轻工总会甜菜糖业研究所品种审定委员会的审定，命名为中甜──狼甜301。     

PUX4型无级变速器用于GA301型浆纱机

ＧＡ３０１型双浆槽浆纱机完全能满足有梭织机织造细特高密织物的上浆要求。随着织机向无梭化发展，织轴趋向于大卷装，而且无梭织机品种适应性广，能生产有梭织机因打纬力等因素而难以织造的阔幅粗特高密以及高密线织物。而ＧＡ３０１型浆纱机车头ＧＺＸ３Ａ型或ＰＵＸ３型等同类无级变速器由于卷绕功率、输出轴力矩、控制凸轮曲线等因素，已不能满足上述品种的生产要求，在实际生产中经常发生故障。１　ＧＺＸ３Ａ型或ＰＵＸ３型无级变速器常见故障无锡第四棉纺织厂于９０年代中期引进了日本津田驹ＺＡ２０５ｉ型、ＺＡ２０９ｉ１９０型…     

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