杂粮乳酸饮料的研制

以具有保健功能的黑豆、黑米、黑芝麻为主要原料,对杂粮乳酸饮料的加工工艺进行了研究。试验采用L9(34)正交试验确定加工工艺参数,对不同配方的产品进行感观评定,筛选出最优组合。研究结果表明,将黑豆、黑米、黑芝麻分别与水4∶1打浆、过滤,将制得的浆以4∶2∶1混合均匀,添加30%的牛奶,10%蔗糖和7%发酵剂,在39℃发酵5 h,制得口感细腻、爽口、酸甜适中、风味较佳并具有保健功能的杂粮乳酸饮料。     

橙汁酸豆奶的开发研究

以橙汁、黄豆浆为原料,进行乳酸菌发酵,制得保健食品发酵橙汁酸豆奶。通过正交法确定了发酵工艺参数,筛选出最优组合。实验结果表明：豆奶中加入15%橙汁、7%蔗糖和4%混合发酵剂(St：Lb=2：1),在40℃下发酵4h,制得的发酵奶色香味甚佳,具有营养保健功能。     

猕猴桃-芦荟酸奶的研制

以猕猴桃汁、芦荟汁、鲜牛乳为主要原料,通过乳酸菌发酵,制得保健饮品发酵猕猴桃-芦荟酸奶。通过正交法确定了发酵工艺参数,筛选出优化组合。实验结果表明,鲜牛奶中加入10%猕猴桃汁、7%芦荟汁、8%白砂糖,3%发酵剂,41℃条件下发酵4h,制得的发酵奶色香味甚佳。     

红枣花生糯米复合型发酵饮料的研制

以花生、红枣和糯米为原料,主要是将糯米经糖化后制得的糖化醪与经过一系列处理得到的枣浆和花生浆按一定的比例混合后其发酵制得饮料。该饮料既保留了花生和红枣天然的营养价值,又具有花生、红枣、糯米在混合发酵中通过互生增效作用而产生的特有的保健功能。通过单因素试验、多因素正交试验筛选出花生浆：枣浆值、pH、糖度及酒精度的最佳参数为花生浆：枣浆为2：3、酒精度0．2％、酸度3．3、糖度18％,最终制得酸甜可口、风味独特、营养丰富、低酒度的保健饮料。     

南瓜酸牛奶生产工艺研究

研究了以南瓜浆、牛乳为原料,经过发酵制得的南瓜酸牛奶的生产工艺、配料组合,结果表明最佳配方和生产工艺为:南瓜浆30％,鲜牛乳70％,另加蔗糖5％-6％,稳定剂0．20％,发酵剂接种量 4％,41℃下发酵5h,1-5℃低温下后熟24h。该产品风味独特,营养全面,是一种兼营养保健与疗效作用的酸乳制品。     

腐乳的生产工艺

为传承传统的发酵食品。介绍了腐乳的生产工艺流程。大豆定量后。经磨浆、煮浆、点浆、制坯、前期发酵、腌坯、后期发酵制得腐乳。腌坯时不同的配料,经后时发酵可制得红方、青方、糟方、辣方和白方等不同风味腐乳成品。     

黑甜玉米片发酵乳的研制

对具有营养保健功能的黑甜玉米片发酵乳的加工工艺进行了初步探讨。结果表明:以黑甜玉米粒为原料,经过系列加工及强化后制得营养丰富的黑甜玉米片;按照黑甜玉米片浆:牛乳=1:3的配比,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43℃,发酵时间6h等工艺条件,可得到品质优良、风味独特的黑甜玉米片发酵乳。     

小球藻保健酸乳工艺研究

将小球藻提取液添加入牛乳中,经乳酸菌发酵,制得一种兼具小球藻和酸乳双重营养的新型食品。实验结果表明,小球藻营养保健酸乳的最佳生产工艺为:100%鲜牛奶,2%小球藻提取液,10%白砂糖,4%乳酸菌,发酵温度38℃,发酵时间4.5h。     

甘薯格瓦斯饮料工艺条件的研究

以甘薯浆为原料,把从甘薯泡菜中分离得到的乳酸菌和啤酒酵母一起联合发酵,制得既有营养又有保健功能的格瓦斯饮料。并通过正交试验确定了最佳工艺参数。     

粗粮复合发酵酸乳的研制

结合糯玉米、花生、甘薯3种粗粮不同营养保健功效,以牛乳、糯玉米、花生、甘薯为主要原料,研究确定粗粮复合乳酸发酵酸乳的最佳配方和生产工艺。结果表明,3种粗粮混合的混浆中糯玉米、花生、甘薯的最佳配比为2:5:1,最佳工艺条件为基质配比(牛乳:混浆)为84:16,接种量为5%,发酵温度为43℃,糖的添加量为7%。此条件下制得的复合酸乳口感独特、营养丰富。     

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