芦荟酸奶的研究

以牛奶、芦荟为原料经乳酸菌发酵制得芦荟酸奶,在保持普通酸奶原有风味的同时有芦荟的清凉感,且更具保健作用。确定了最佳工艺配方,为：鲜奶72％,脱脂奶粉2％,芦荟汁15％．蔗糖7％,果胶0．2％;接种量为4％。     

低糖酸乳的研制

研究后酸化发酵剂和复配甜味剂在低糖酸乳中的应用.结果表明,4种不同发酵剂蛋白质水解能力依次为:Y-18＜Y-14＜Y-12＜Y-65,通过正交试验得到低糖酸乳的最佳配方,即40％的白砂糖、0.005％的三氯蔗糖、0.005％的安赛蜜、2％的复配稳定剂和Y-18发酵剂.由此配方制得的低糖酸乳口感和稳定性最佳,感官指标、理化指标、微生物指标都可以达到酸乳标准所要求的范围,复配甜味剂在酸乳中稳定性良好,可以应用于生产实践.     

颗粒状冷水可溶性淀粉在凝固型酸奶中的应用研究

以牛奶、蔗糖为主要原料,颗粒状冷水可溶淀粉为稳定剂,生产凝固型酸奶。对凝固型酸奶的工艺配方进行研究,确定了凝固型酸奶生产的最佳工艺配方为：颗粒状冷水可溶淀粉添加量0．3％,蔗糖添加量9％,接种量2％,发酵温度为42℃,得到无乳清分离、口感细腻、酸甜适中的凝固型酸奶。     

低脂低热量补铁保健酸奶的研制

本试验对低脂、低热量、补铁保健酸奶的生产配方和工艺进行了研究。结果表明，保健酸奶的最佳配方为：脱脂奶粉6．5％(w／w)，全脂奶粉0．5％(w／w)，蔗糖总用量7％，其中,35-40％用蔗糖，用甜味剂(阿斯巴甜与安赛蜜配比7：3)替代55-60％蔗糖，乳酸亚铁333．5mg／kg酸乳、稳定剂ZH-10．1%（w/w)、香精0．03％(w／w)；工艺优化结果为：搅拌过程中加入乳酸亚铁和配料时加入急定剂ZH-1。试验所得成品酸奶风味理想，酸甜适中，感官和卫生指标均达到试验设计的要求。     

香蕉奶饮料生产工艺研究

本研究以香蕉和牛奶为原料,探讨香蕉奶饮料的加工工艺,重点对最崔配方及杀菌工艺进行了研究。结果表明：香蕉奶饮料最佳配方为：香蕉浆20％、奶粉4％、蔗糖10％、耐酸羧甲基纤维素钠0．2％;最佳杀菌工艺条件为：121℃杀菌10min。     

酸奶发酵中以甜菊糖甙代替蔗糖初探

本课题摸索出以低热值高甜度的天然甜味剂－－甜菊糖甙代替酸奶中传统甜味剂蔗糖的大部分后的最佳发酵工艺。得到其品质，外观均不受影响，且风味更佳，发酵时间更短的甜菊糖甙酸奶。     

麦苗汁营养酸奶的研制

通过单因素和正交试验对麦苗汁营养酸奶的配方和最佳发酵工艺条件进行优化,并对产品质量作出评价。研究表明,麦苗汁酸奶的最佳配方（在原料乳的基础上）：麦苗汁添加量为5％,蔗糖添加量为8％（均为质量分数）,同时加入质量分数为0、2％的PGA和0．1％CMC—Na：最佳发酵工艺条件为温度42℃,发酵时间4h。在此工艺条件下制备的麦苗汁营养酸奶具有感官品质佳、稳定性好和营养丰富等特点。     

新型醋酸饮料的研制报告（一）醋酸饮料中甜味剂的选用

本文介绍了新一代醋酸型饮料的制作工艺，并通过几种甜味剂的品质分析和应用试验确定了适合醋酸饮料的甜味剂配方。     

低糖话梅工艺技术要点及参数研究

对影响低糖话梅品质的脱盐方法、干燥方式、烘干温度、烘干方法、白砂糖用量及甜味剂复配配方等关键工艺要点及工艺参数进行了研究。结果表明,梅坯脱盐用水量与梅坯重之比为1∶8,浸泡脱盐1h;梅坯经甘草料液浸渍后,采用热风间歇烘干法,即先在60℃下烘1.5h,而后间歇1h,再于50℃下烘2.5h;甘草料液的最佳甜味剂配比为:每100g梅坯中,加入白砂糖1.8g,甘草2g,AK糖0.45g,甜菊糖0.45g,三氯蔗糖0.05g。按此工艺技术制成的话梅含糖量在7%左右,味道纯正,营养丰富,并达到了降低甜味剂添加量的目的。     

无糖虫草酸奶的研制

以虫草、奶粉为主要原料,不添加蔗糖,研制出一种新型保健酸奶。通过单因素试验和正交试验得出产品最佳组合。结果表明,复原乳(全脂奶粉/水为1∶6)70%,虫草浸提液添加量20%,复合甜味剂(阿斯巴甜/安赛蜜为3∶1)0.035%,接种量3%,发酵时间5h。按此条件生产出的酸奶酸甜适口,风味浓郁。     

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