X-COOL凉爽纤维针织面料的染色

采用分散黄GD染料对X-COOL凉爽纤维针织面料进行一浴法染色,探讨了染料质量分数、染色温度、固色时间以及染液p H值对面料上染百分率和染色K/S值的影响。优化的染色工艺为:分散黄GD 2%(omf),分散剂NNO 1 g/L,染色温度125℃,染色时间60 min,固色温度85℃,固色时间40 min,p H值4.5,浴比1∶30。结果显示,X-COOL凉爽纤维针织面料的耐洗色牢度、耐汗渍色牢度和耐摩擦色牢度达到4级以上,染色织物的顶破强力降幅较小,能够满足服用要求。     

磁性针织面料染色

磁性纤维针织面料是在聚合物纺丝过程中加入纳米级磁性微粒。试验采用二浴法对磁性纤维/粘胶纤维混纺纱进行染色,分散染料高温高压法上染磁性纤维的最佳工艺为：分散蓝2BLN 2.5%（omf）,染色温度130 ℃,染色时间60 min,染浴pH值6.0,升温速率1.8 ℃/min,浴比1〖KG-*9〗∶〖KG-*2〗50。染色后的织物的耐摩擦色牢度、耐汗渍色牢度和耐洗色牢度在4级以上,磁感应强度在0.8～1.1 Gs,适合开发各类保健针织产品     

抗紫外涤纶分散染料染色性能

采用分散黄4RFN、分散红3B和分散蓝2BLN染料对抗紫外涤纶织物进行染色。探讨了染色温度、染色时间、pH、分散剂NNO和染料用量对抗紫外涤纶织物染色性能的影响,测试了染色K/S值、耐洗和耐摩擦色牢度。结果表明:当染料用量为1%(omf)、分散剂用量为2 g/L、pH为4~6、染色温度为100℃、染色时间为60 min时,抗紫外涤纶可获得较高的染色K/S值和优良的染色牢度。     

聚苯硫醚纤维的苯甲酸苄酯染色性能

采用分散蓝2BLN和载体苯甲酸苄酯对聚苯硫醚纤维进行染色,以提高染料的上染率,降低染色温度,缩短染色时间。优化的染色工艺为:苯甲酸苄酯4 g/L,染料2%(omf),分散剂NNO 2 g/L,浴比1∶30~1∶50,p H值4.5左右,120℃染色60~70 min。聚苯硫醚纤维的上染率可达90%以上,透染性良好;纤维的色牢度达到4级以上;断裂强度为3.714 c N/dt,较原纤维略有提高;极限氧指数为34%,对阻燃性能无影响。     

芦荟纤维针织面料的染色工艺研究

文中运用单因素分析和正交实验相结合的方法对芦荟纤维针织面料的染色工艺进行了分析,优化的染色工艺为:活性艳红KD-8B染料用量2%,碳酸钠的用量20 g/L,元明粉的用量40 g/L,染色温度60℃,上染时间40 min,固色温度95℃,固色时间60 min,浴比1:20。色牢度测试结果显示,经最优工艺染色后,芦荟纤维针织面料的耐摩擦色牢度、耐汗渍色牢度和耐洗色牢度均较好,达到4级以上。     

芳砜纶纤维的阳离子染料染色

以较小配伍值的阳离子染料对芳砜纶纤维进行载体染色,优化染色工艺为:阳离子染料0.5%owf,促染剂NaCl 50 g/L,载体MS 40 g/L,非离子渗透剂1 g/L,pH值3,浴比1:12,染色温度135℃,时间60 min。采用阳离子染料染色的芳砜纶纤维色牢度较好,均在4级左右。     

PPS/PA66/SiO2共混纤维染色

PPS/PA66/SiO₂系聚苯硫醚与尼龙66和二氧化硅共混纤维,采用分散染料对其进行染色工艺试验,讨论了染色温度和时间,PPS纤维改性等工艺对上染率的影响,测试了分散染料染色后纤维的断裂强力和皂洗色牢度。结果表明,该共混纤维分散染料优化染色条件为:染料2%（omf）、扩散剂NNO 1 g/L、磷酸二氢钾2 g/L、渗透剂2mL/L、pH值5、浴比1:100,染色温度140℃,时间50min;染料的上染率可达到73%,染色纤维的皂洗色牢度达到5级,染色纤维强力损伤较小。     

咖啡碳纤维针织面料的染整工艺研究

对咖啡碳改性涤纶纤维(简称咖啡碳纤维)针织面料的染整工艺进行了研究。运用单因素分析法和正交试验法相结合的方法对咖啡碳纤维针织面料的染色工艺进行了优化,得出优化后染色工艺,对染色后咖啡碳纤维针织面料进行柔软整理和定形整理,测试并分析了染色后织物的耐洗色牢度、耐摩擦色牢度、耐汗渍色牢度。结果表明,优化后染色工艺条件为染料用量2.0%,扩散剂NNO用量0.6 g/L,p H值4.5,浴比1∶55,温度130℃,时间30 min;咖啡碳纤维针织物可以上染深色;优化工艺染色后织物的耐洗色牢度、耐摩擦色牢度、耐汗渍色牢度较好。     

低温型分散染料上染聚乳酸纺粘非织造布工艺的研究

采用低温型分散染料高温高压法对聚乳酸纺粘非织造布进行染色,探讨了温度、时间、pH值和分散剂等因素对聚乳酸纺粘非织造布染色性能和撕破强力的影响。试验表明,用浓度为0.5%(o.w.f.)的低温型分散染料(分散蓝2BLN)上染聚乳酸纺粘非织造布的最佳工艺条件是:染色温度110℃,保温时间20 min,染液pH=5,以1 g/L的分散剂NNO为助剂。     

抗紫外线涤纶织物的分散染料低温染色

采用分散黄4RFN、红3B和蓝2BLN三只染料对抗紫外线涤纶织物进行低温染色,讨论了染色温度、时间、p H值、苯甲醇、分散剂和染料用量对抗紫外线涤纶分散染料染色性能的影响,测试了染色织物的K/S值、UPF指数、紫外线透过率、耐洗和耐摩擦色牢度。结果表明:当染料1%(omf),p H=4~6,苯甲醇35 m L/L,分散剂2 g/L,80℃保温染色60 min时,抗紫外线涤纶可获得较高的染色K/S值和较好的染色牢度。     

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