无糖乳酸菌饮料的研制

用木糖醇代替蔗糖，生产的无糖乳酸菌饮料，在口感和性状上，与以蔗糖为甜味剂的乳酸菌饮料相近，能被大部分消费者所接受。通过正交实验设计，得到的最优配方为：木糖醇7％(质量分数)，保加利亚乳杆菌：嗜热链球菌=1：1，菌种量4％(质量分数)。     

马铃薯酸牛奶加工技术的探讨

根据传统型酸奶的制作工艺，对马铃薯酸牛奶的加工工艺、技术要点进行了研究，并采用Ｌ_９（ ３~４）正交试验筛选出马铃薯酸牛奶的最佳配方。结果表明，以马铃薯浆４０％、鲜牛奶６０％的混合奶液，加蔗糖５％、接种量４％制作的马铃薯酸牛奶，不仅可保持传统型酸牛奶的组织状态和风味，并由于原料的营养互补，使该产品具有营养价值高、口感好、价格低廉等优点。     

凝固型酸牛奶发酵剂的筛选及应用

选取3种酸牛奶发酵剂SVV-A,SVV-B和09C-D,制成凝固型酸牛奶。通过单因素和正交试验确定了最佳发酵剂和制备工艺:发酵剂为SVV-B,发酵温度为37℃,蔗糖添加量为8%。在此条件下发酵的凝固型酸牛奶酸度为93°T,活菌数可达5.8×107CFU/mL,口感清爽,酸甜适口,质地均匀。     

无糖型大米红枣混合发酵饮料的研制

以大米、红枣为主要原料,用木糖醇和三氯蔗糖代替蔗糖研制无糖型大米红枣混合乳酸菌发酵饮料。经单因素实验和正交试验确定产品的最佳工艺配比为木糖醇2%、三氯蔗糖0.06‰、混合乳酸菌接种量4%、果胶添加量2.5‰。此配方制得的无糖饮料口感好、风味浓、稳定性佳,适合糖尿病、肥胖症、高胆固醇等人士饮用。     

保加利亚乳杆菌和嗜热链球菌发酵紫红薯酸牛奶

研究以鲜牛奶和紫红薯为主要原料,保加利亚乳杆菌(Lactobacillus bulgaricus)与嗜热链球菌(Streptococcus thermophilus)为发酵剂,木糖醇为甜味剂,进行了发酵条件的平行和L9(34)正交试验.结果表明,保加利亚乳杆菌与嗜热链球菌混合量比1∶1(数量比),接种量5％,紫红薯添加量15％,木糖醇10％,果胶0.1％,明胶0.1％,CMC 0.1％,变性淀粉0.5％,45℃,发酵4h,制得的紫红薯酸牛奶不仅保留纯酸牛奶的芳香和口感,又具备紫红薯的营养和色泽,是新型紫红薯营养酸奶发酵的优化工艺.     

新型软姜糖的研制

以木糖醇、姜、蔗糖、琼脂为主要原料,研发具有保健功能的软姜糖。实验确定的软糖制作最佳工艺参数为：胶凝剂（琼脂：明胶=3：1）5％,木糖醇30％,姜提取液1O％,蔗糖30％。产品口感独特,风味诱人,有良好的咀嚼性和弹性,对传统软糖的开发研究具有重要意义。     

无蔗糖豆渣酸豆乳的研制

通过单因素实验和正交试验,用豆渣、木糖醇、豆奶、酸奶为主要原料制作酸豆乳,研究了四者的配比,研制出较佳的无蔗糖豆渣酸豆乳的配方。无蔗糖豆渣酸豆乳最佳配方为豆渣粉:豆奶粉为0.25∶1,菌种添加量为6%,木糖醇添加量为5%,发酵时间为5 h。添加豆腐渣和木糖醇制作的酸豆乳,色泽偏黄,无苦涩口感,有嚼头,富含膳食纤维,不仅适合一般人群食用,也适合糖尿病人和肥胖病人食用。     

无蔗糖糖浆在无糖食品中的应用

无蔗糖糖浆是以麦茅糖醇、木糖醇为主要原料以一定比例配合制成的糖浆，两者的配合既能解决麦芽糖醇不能上色的缺点，又能提高木糖醇母液的附加值，无蔗糖糖浆具有麦茅糖醇与木糖醇的双重特性。本文论述了无蔗糖糖浆的性质及应用。     

木糖醇 上呼吸道的保健卫士

木糖醇是功能糖醇中的佼佼者。其甜度与蔗糖相当，具有良好的口感；其代谢不需要通过胰岛素，所以它可以作为糖尿病人的代用甜味剂；其不能为口腔微生物利用，可以保护牙齿，甚至修补已经造成的牙齿表面细小裂缝，它在糖尿病人的食用与护齿方面的作用，已经广为人知。     

长白山野生软枣猕猴桃低糖果脯真空渗糖工艺优化

为了探索长白山野生软枣猕猴桃低糖果脯的最佳工艺参数,通过单因素试验考察了加工过程对果脯感官品质的影响,采用正交试验优化了渗糖液配方及真空渗糖工艺参数。结果表明:蔗糖和木糖醇质量配比为2∶1、蔗糖和木糖醇混合溶液质量分数为50%、CMC-Na质量分数为0.5%、柠檬酸质量分数为0.6%;渗糖真空度为0.075 MPa、真空渗糖时间12 h。在此条件下可制得色泽、口感和组织状态俱佳的软枣猕猴桃低糖果脯。     

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