羧甲基淀粉作酸奶稳定剂的应用效果研究

对羧甲基淀粉作为酸奶稳定刺及其应用效果进行了分析研究。结果表明：蔗糖添加8％，发酵温度为42℃，菌种比例为St：Lb=1．5：1的前提下，通过正交试验筛选出最佳发酵工艺条件为CMS添加0．1％、发酵时问为4h、接种量为3％．在4℃的保存条件下，添加CMS的酸奶比对照组酸奶的保质期至少延长了2d。     

花生酸奶的研制

本试验以花生和鲜牛乳为原料,对花生酸奶的制作进行研究。结果表明,花生浆与鲜牛乳的比例1：2、发酵时间5h、接种量3．5％、蔗糖添加量8％、发酵温度42．5℃、0．20％的海藻酸钠及0．075％的CMC—Na作为稳定剂为最佳工艺条件。花生酸奶风味独特,营养丰富,酸甜适中。     

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。     

花生乳酸发酵酸奶的研究

本项目采用不同配方，按正交试验设计方案，对花生乳酸发酵酸奶进行了研究，其结果以花生浆与牛奶混合比1：3，蔗糖添加量6．0％。稳定剂添加量0．2％、乳酸菌接种量3．0％的处理组合最佳。     

葡萄多酚酸奶的研带

在传统酸奶加工工艺基础上,生产葡萄多酚酸奶。根据正交试验确定葡萄多酚酸奶发酵的最优工艺条件为：蔗糖添加量为6％,葡萄多酚添加量为0．7g/L,保加利亚乳杆菌与嗜热乳酸链球菌的比例为1：2,直投发酵剂的接种量为0．01％,发酵温度为43℃,发酵时间为4h-5h。生产的葡萄多酚酸奶,口感温和、风味纯正、质地细腻、保健功能高、保质期长。     

葛根酸奶的工艺研究

对具有营养保健功能的葛根酸奶的加工工艺进行了初步探讨。结果表明：以鲜葛根为原料，用0．05％Vc 0．1％柠檬酸作为护色剂，可制得色泽洁白，质量良好的葛根汁；采用葛根汁：鲜牛奶=3：7的原料配比，将保加利亚乳杆菌和嗜热链球菌以1：1混合作为发酵剂进行发酵，采用接种量3％，加蔗糖量8％，发酵温度42℃，发酵时间5h等工艺条件，可得到品质风味优良的葛根酸奶。     

灵芝酸奶制作工艺与营养

研究以灵芝深层发酵滤液为主要原料，生产风味型酸奶的最适配方。进行混合发酵菌剂的制备，探讨灵芝酸奶的生产技术条件并对其营养成分进行分析。结果：鲜乳与灵芝深层培养滤液以60：40的比例混合；加入5％～7％的蔗糖；稳定剂PGA和CMC-Na的添加量分别为0.2％和0．1％；保加利亚乳杆菌和嗜热链球菌，以1:1比例混合，5％～7％的接种量，在40～42℃条件下发酵6～7h时所制灵芝酸奶必需氨基酸分值较高，是一种口感和质量上乘的新型发酵性酸奶。     

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。     

消暑解毒酸奶的研制

以绿豆和奶粉为主要原料研制消暑解毒酸奶的最适配方。结果表明，绿豆浆与奶粉液以1：3（V／V）的比例混合，加5％的蔗糖，4％-5％的蜂蜜，0．1％的琼脂，按3％的接种量接入保加利亚杆菌和嗜热链球菌（1．2：1），在42℃下发酵3h，可以制得优质消暑解毒酸奶。     

花粉酸奶的研究

通过对比研究、正交实验、极差分析等方法，研究了凝固型与搅拌型花粉酸奶的最佳配方。结果表明，对于搅拌型花粉酸奶的影响因素为：花粉的添加量＞乳粉的添加量＞蜂蜜的添加量＞稳定剂的添加量；对于凝固型花粉酸奶的影响因素为：花粉的添加量＞乳粉的添加量＞稳定剂的添加量＞蜜的添加量。搅拌型花粉酸奶的最佳因素水平为(质量分数)：花粉为0．5％；稳定剂为0.5％；乳粉3％；蜂蜜1.2％；凝固型花粉酸奶的最佳因素水平为(质量分数)：花粉为0．5％；稳定剂为0．6％3乳粉3％5蜂蜜1．5％。     

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