当归微粉化片剂的研制与质量控制

目的 制备一种新型片剂--当归微粉化片剂,并建立其质量控制方法.方法 将当归进行微米级别的超微粉碎,与辅料均匀混合后,用粉末直接压片法制备片剂;用薄层色谱法对处方中主药材进行定性鉴别;用高效液相色谱法测定片剂中阿魏酸的含量.结果 阿魏酸在0.512～102.4 μg·mL-1浓度范围内与峰面积呈良好的线性关系(r=0.999 6),平均加样回收率为99.17%,RSD=1.47%(n=5).结论 本法简便、准确,可用于此制剂的质量控制;微粉化当归片中阿魏酸的含量高于市售当归片.     

当归微粉化片剂的研制与质量控制

目的 制备一种新型片剂——当归微粉化片剂,并建立其质量控制方法。方法 将当归进行微米级别的超微粉碎,与辅料均匀混合后,用粉末直接压片法制备片剂;用薄层色谱法对处方中主药材进行定性鉴别;用高效液相色谱法测定片剂中阿魏酸的含量。结果 阿魏酸在0.512～102.4μg·m^L-1浓度范围内与峰面积呈良好的线性关系（r=0.999 6）,平均加样回收率为99.17%,RSD=1.47%（n=5）。结论 本法简便、准确,可用于此制剂的质量控制;微粉化当归片中阿魏酸的含量高于市售当归片。     

人参茸芝胶囊的质量控制研究

目的建立人参茸芝胶囊中人参、灵芝孢子粉的定性鉴别和标志性成分人参皂苷和灵芝酸A含量测定的方法。方法用薄层色谱法(thin layer chromatography,TLC)定性鉴别人参茸芝胶囊中人参、灵芝孢子粉;用高效液相色谱法(high performance liquid chromatography,HPLC)测定人参皂苷和灵芝酸A的含量。结果薄层鉴别荧光斑点清晰,分离度好,阴性对照无干扰;人参皂苷在0.5~50μg范围内呈良好的线性关系,平均回收率在98.53%~102.53%之间,相对标准偏差(RSD)在0.84%~1.83%之间;灵芝酸A的线性范围0.0006~0.06mg/m L(r2=0.9998),平均回收率为98.80%,RSD为0.89%。结论所建立的人参、灵芝孢子粉定性鉴别、标志性成分人参皂苷和灵芝酸A定量检测方法可用于人参茸芝胶囊的质量控制。     

前列舒乐胶囊质量标准研究

目的 建立控制前列舒乐胶囊质量的方法.方法 用薄层色谱法定性鉴别制剂中的淫羊藿、黄芪、川牛膝;用高效液相色谱法(HPLC)测定淫羊藿苷含量.结果 定性鉴定了制剂中的淫羊藿苷、黄芪甲苷及川牛膝;HPLC测定本品淫羊藿苷在0.37～7.47 μg范围内线性关系良好,平均回收率98.9%,重现性试验RSD 2.2%.拟限定本品淫羊藿苷含量为每1 g不得少于8.0 mg.结论 以上方法可有效地控制前列舒乐胶囊的质量.     

止咳化痰片质量标准研究

目的建立止咳化痰片的质量控制标准。方法采用薄层色谱法鉴别方中的半夏、桂枝、芥子、鱼腥草、黄芩、甘草、连翘,采用高效液相色谱法测定橙皮苷的含量。结果鉴别方法专属性强,定量方法简便、准确,橙皮苷在89.9~1618.2 ng内线性良好(r=0.99998),平均回收率（n=9）为97.86%,RSD为1.30%（n=9）。结论本质量标准可有效地控制止咳化痰片的质量。     

全虫胶囊质量标准研究

目的建立全虫胶囊的质量标准。方法采用显微鉴别法鉴别全虫胶囊中全蝎、地龙、杜仲、白芍、甘草;采用薄层色谱法(TLC)鉴别全虫胶囊中当归、甘草、牛膝、威灵仙;采用高效液相色谱法(HPLC)测定全虫胶囊中芍药苷和阿魏酸含量。结果显微鉴别及TLC鉴别专属性强。芍药苷在0.1768~1.1786μg范围内线性关系良好(r=0.999);平均回收率为98.01%,RSD为1.01%(n=9);阿魏酸在0.0388~0.2590μg范围内线性关系良好(r=0.999),平均回收率为97.92%,RSD为2.17%(n=9)。结论所建立方法稳定可靠,可控制全虫胶囊质量。     

复方胆通片质量标准的研究

目的 建立复方胆通片的质量标准.方法 采用薄层色谱法鉴别方中的大黄、溪黄草与胆通;用高效液相色谱法测定羟甲香豆素和齐墩果酸的含量.结果 薄层色谱法能明显检测出大黄、溪黄草、胆通,薄层图谱斑点清晰,阴性对照无干扰;羟甲香豆素进样量在4.92～49.2 μg范围内呈良好线性关系(r=0.999 7),平均加样回收率为98.79%;齐墩果酸进样量在0.3～3.0 μg范围内呈良好线性关系(r=0.999 3),平均加样回收率为99.90%.结论 所建标准可用于复方胆通片的质量控制.     

前列舒乐胶囊质量标准研究

目的建立控制前列舒乐胶囊质量的方法。方法用薄层色谱法定性鉴别制剂中的淫羊藿、黄芪、川牛膝;用高效液相色谱法（HPLC）测定淫羊藿苷含量。结果定性鉴定了制剂中的淫羊藿苷、黄芪甲苷及川牛膝;HPLC测定本品淫羊藿苷在0.37～7.47μg范围内线性关系良好,平均回收率98.9%,重现性试验RSD 2.2%。拟限定本品淫羊藿苷含量为每1 g不得少于8.0 mg。结论以上方法可有效地控制前列舒乐胶囊的质量。     

摩罗胶囊质量标准的研究

目的建市摩罗胶囊的质量标准.方法用薄层色谱法鉴别处方中的玄参、麦冬、延胡索;用高效液相法测定制剂中芍药苷的含量.结果薄层色谱专属性强,芍药苷的线性范围为21.14～107.2 μg/mL,r=0.999 8,平均加样回收率96.19%,RSD 0.45%.结论该方法简便,准确,重复性好,可作为摩罗胶囊质量控制的标准.     

HPLC法测定鼻炎丸中黄芩苷的含量

目的 建立高效液相色谱法测定鼻炎丸中黄芩苷的含量.方法 高效液相色谱法条件:色谱柱以十八烷基硅烷键合硅胶为填充剂;以甲醇-水-磷酸(47:53:0.2)为流动相;检测波长为280nm.结果 黄芩苷在进样量为0.204～1.02μg (r=0.9999)范围内与峰面积呈良好的线性关系;测定本品中黄芩苷的含量,加样回收率为99.97%(n=6),RSD为0.70%.结论 所建立的方法准确可行,重复性好,可有效控制鼻炎丸的质量.     

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