羊毛织物的天然植物染料姜黄染色研究

分析了影响姜黄染料萃取工艺的因素，试验确定，20g／L烧碱处理可获得较好的萃取效果。将萃取的姜黄染料对羊毛织物分别进行直接染色、预媒染染色和后媒染染色，以△E为依据，确定了染色工艺的最优化处方及条件，并测试了三种染色织物的色牢度和抗菌性。     

青黛与姜黄对柞蚕丝织物的套染

为扩展天然染料染色的色谱范围,弥补天然染料染色缺乏绿色的问题,选用2种植物染料青黛与姜黄对柞蚕丝织物进行套染拼色研究。研究了染料浓度、pH值、温度和时间对柞蚕丝织物套染K/S值和颜色特征值的影响,探讨了套染柞蚕丝织物的机制,以及染色织物的抗菌性、均匀性和色牢度。结果表明:姜黄可在青黛染色的柞蚕丝织物上套染到绿色,且姜黄染液相对用量对染色深度的影响最大;经正交试验得到套染绿色的优化工艺为:姜黄染液相对用量30%,染色pH=4,染色温度80℃,染色时间60 min;经优化工艺套染柞蚕丝织物的摩擦色牢度和水洗色牢度均大于3级;对金黄色葡萄菌和大肠杆菌的抑菌率分别达92.56%和80.41%。     

提高天然植物染料姜黄耐晒牢度的研究

由于植物染料染色的织物色牢度较差，故受到很大限制，采用不同的重氮化试剂对经姜黄染色后的真丝织物进行处理，通过工艺的优化，最终使经姜黄染色后的真丝织物的耐晒牢度有较大的提高。     

姜黄染料用于阳离子改性纤维素纤维织物的染色性能研究

介绍了纤维素纤维织物阳离子化处理的机理，经正交实验，优化出纤维素纤维织物阳离子改性、姜黄萃取和染色的最优工艺条件．通过改性纤维素纤维织物和未改性纤维素纤维织物染色试样的对比分析，得出阳离子改性处理对提高天然姜黄染料在纤维素纤维织物上的染色性能有明显的改善作用．     

阳离子改性竹原纤维织物的苏木染色性能研究

通过正交实验和极差分析、优化了竹纤维织物阳离子改性、直接染色和不同媒染的最佳工艺条件；结果表明，阳离子改性处理对提高天然苏木染料在竹纤维织物上的染色性能有明显效果，同时媒染固色后水洗牢度和摩擦牢度有了进一步的提高。     

姜黄染料对柞蚕丝织物的染色性能研究

从姜黄中提取天然染料,研究姜黄染料对柞蚕丝绸的染色性能及功能性。探讨染色工艺参数如染色温度、染色时间、染浴p H值对染色织物K/S值的影响,研究了媒染剂硫酸锌、硫酸铝、硫酸亚铁对试样K/S值及色泽的影响,测试了染色柞蚕丝织物的染色牢度及其抗紫外线、抗菌性能。结果表明,天然姜黄染料对柞蚕丝织物的上染性能良好,媒染剂显著影响试样的色泽及染色深度。姜黄染色柞蚕丝织物具有优良的紫外线防护性能及抗菌性能。     

姜黄染色织物的pH值敏感变色性能

为开发pH值敏感变色织物,研究了pH值对姜黄染色织物颜色变化的影响,利用高效液相色谱法对姜黄提取物主要成分进行分析,测试了不同pH 值条件下姜黄提取液的吸收光谱、姜黄染色织物的上染率、K/S值和染色牢度,利用颜色特征值对姜黄染色织物在不同pH值下的变色情况进行表征。结果表明：植物染料姜黄的主要成分为姜黄素,姜黄素分子在碱性条件下会电离成阴离子,引起颜色变化;随溶液ｐＨ 值的增加,姜黄提取液的吸收峰会产生红移,且吸收强度增加,提取液在酸性条件时呈黄色,当提取液pH 值大于8 时,溶液呈红棕色;姜黄对丝织物的染色性能好于棉织物。在pH值由中性向碱性转变时,姜黄染色织物会产生显著的变色,染色织物色相值变小,颜色由黄色域向红色域转变。     

天然染料姜黄对涤纶织物染色的研究

选择五种不同的染色方法研究了姜黄染料对涤纶织物的可染性。通过正交试验 ,确定了提取姜黄色素及其染色的最佳工艺。结果表明 ,姜黄在该工艺条件下染涤纶 ,可以获得较高的染色深度及优良的水洗牢度和摩擦牢度。作为分散染料的一种替代品 ,姜黄染料具有较好的应用前景     

植物染料姜黄用于柞蚕丝织物染色性能的研究

采用姜黄提取液染柞蚕丝织物,通过正交实验、极差分析、方差分析及单因素分析确定了直接染色的最佳工艺条件.实验结果表明天然植物染料姜黄可以直接上染柞蚕丝织物,并且具有较好的染色效果和染色牢度.     

竹纤维家纺面料天然染料染色工艺探讨

探讨了竹纤维家纺面料阳离子改性工艺,改性织物用黄棕色天然染料Natural 0002染色的工艺。结果表明竹纤维织物改性最优工艺为:改性剂Fix-800用量6%(owf),氢氧化钠浓度9g/L,温度70℃,时间35min。最佳染色工艺为:染料用量不超过6%(owf),温度80℃,时间40min,pH值4.5~5.5。     

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