紫薯魔芋酥性饼干的研制

以紫薯和魔芋为主原料,配以低筋面粉、鸡蛋、白砂糖、纯牛奶、食用油、黄油、双效泡打粉等为辅料制作紫薯魔芋酥性饼干。经过制作工艺试验得到紫薯魔芋酥性饼干的最佳烘烤温度为面火180℃、底火180℃,最佳烘烤时间为15 min。紫薯魔芋酥性饼干的最佳配方:低筋面粉100 g、鸡蛋20 g、紫薯粉20 g、魔芋粉0.5 g、白砂糖30 g、食用植物油45 g、黄油20 g、双效泡打粉1.0 g、纯牛奶20 g。所制成的紫薯魔芋酥性饼干风味较为独特,外形完整,口感酥脆。     

响应面法优化燕麦杏鲍菇酥性饼干配方

本试验采用低筋面粉、燕麦粉、杏鲍菇粉、黄油、白砂糖为主要原料制作了燕麦杏鲍菇酥性饼干,通过单因素试验和响应面试验研究了杏鲍菇粉、燕麦粉及黄油的添加量对产品的影响,并以产品的感官评价得分为指标,优化了燕麦杏鲍菇酥性饼干的配方。结果表明：低筋面粉100%,燕麦粉添加量20%,杏鲍菇粉添加量16%,黄油添加量49%,以此配方制得的酥性饼干,组织形态良好,色泽呈现均匀的金黄色,具有杏鲍菇的特殊香味,燕麦滋味醇厚,感官评价得分达到84.82分。通过质构分析,本实验制得的燕麦杏鲍菇酥性饼干的硬度、粘性和咀嚼性均大于空白对照饼干。     

土豆麦麸酥性饼干的研制

为研发出一种高膳食纤维的酥性饼干,以土豆、麦麸、低筋粉为主要原料,对土豆麦麸酥性饼干的加工工艺进行优化,研究分别选取土豆粉、黄油、糖粉和麦麸添加量4个因素进行单因素和正交试验.由此得出,土豆麦麸饼干的最佳配方为土豆粉35 g、低筋面粉20 g、黄油10 g、糖粉8 g、麦麸8 g、奶粉6 g、蛋黄10 g、小苏打0.2 g、食盐0.2 g.土豆麦麸饼干的各因素对饼干的品质影响的主次顺序为黄油添加量﹥麦麸添加量﹥土豆粉添加量﹥糖粉添加量.研制出的饼干组织细腻、口感酥松、外形完整、色泽均匀、风味独特.     

西兰花膳食纤维饼干的研制

以西兰花摘除花球部分后的尾菜烘干粉为主要膳食纤维来源,以黄油、白砂糖、鸡蛋黄、低筋面粉为主要原料,研制风味独特且富含膳食纤维的饼干。通过单因素试验确定主要原料添加水平,设计响应面试验确定最佳配方,结果表明：饼干配方为黄油50 g、蔗糖40 g、西兰花尾菜粉97.5 g、低筋面粉52.5 g 时,饼干的感官评分为86.9,饼干中膳食纤维含量达12.02%。     

油橄榄果渣酥性饼干的研制

油橄榄果渣是橄榄油加工废弃物,富含多酚化合物等多种生物活性物质,具有较高的利用价值.以传统酥性饼干配方和制作方法为基础,添加油橄榄果渣,研制油橄榄果渣酥性饼干.以油橄榄混合果渣质量比、低筋面粉、泡打粉、黄油、玉米油、白砂糖添加量进行单因素试验和正交试验,确定油橄榄果渣酥性饼干配方.以烘烤上火温度、烘烤下火温度和烘烤时间...     

基于响应面设计的藜麦酒糟饼干配方优化

为研发一种营养成分丰富的新型酥性饼干,以藜麦酿酒的副产物酒糟和低筋面粉为主要原料,黄油、小苏打、白砂糖和鸡蛋液为辅料,以感官评分为指标,采用单因素和响应面设计试验优化藜麦酒糟饼干的配方。结果表明,藜麦酒糟饼干的最佳配方：低筋面粉与藜麦酒糟质量比为2∶1,黄油添加量21%,白砂糖添加量15%,鸡蛋液添加量24%,此工艺条件下制备得到的饼干口感酥脆、质地细腻、营养均衡,感官评分达92.62分,产品理化和卫生指标符合国家质量安全标准,具有良好的工业化生产意义。     

姬松茸牛骨粉酥性饼干的研制

研究了姬松茸牛骨粉酥性饼干配方。在姬松茸粉、超微牛骨粉、食用猪油、白砂糖不同添加量的条件下对饼干产品品质的影响,并通过正交试验优化了该产品的配方。试验研究表明:姬松茸牛骨粉酥性饼干的最优配方为姬松茸粉6%,超微牛骨粉6%,食用猪油6%,白砂糖10%和适量水,在此条件下生产,产品风味独特、营养丰富、酥脆爽口。     

葛根玉竹饼干工艺优化

以葛根粉、玉竹粉及低筋面粉为主要原料,研制酥性饼干。采用单因素和响应面分析法优化葛根玉竹酥性饼干的最佳工艺。研究结果表明:葛根玉竹酥性饼干最优配方为葛根粉添加量13%、玉竹粉添加量11%、油脂添加量50%、木糖醇添加量45%,在此条件下感官评分为96.89分;方差分析结果表明,影响葛根玉竹酥性饼干感官评分因素由大到小依次是木糖醇添加量>油脂添加量>葛根粉添加量>玉竹粉添加量。     

青稞木糖醇酥性饼干研制及其血糖生成指数评价

研制青稞木糖醇酥性饼干,并对其血糖生成指数(Glycemic index, GI)进行评价。通过单因素和正交试验研究了青稞粉、木糖醇、黄油、鸡蛋液添加量对青稞木糖醇酥性饼干品质的影响,以确定青稞木糖醇酥性饼干的制作配方,并结合淀粉体外消化特性试验对其GI进行评价。结果表明：青稞木糖醇酥性饼干的最优配方为：青稞粉70.00 g、小麦低筋粉30.00 g、木糖醇21.00 g、黄油40.00 g、鸡蛋液24.00 g、乳粉10.00 g、食盐0.30 g、泡打粉1.00 g。优化后青稞木糖醇酥性饼干的理化及卫生指标符合国标要求,GI值为59.81,属于中GI食品。在此配方下制作的青稞木糖醇酥性饼干风味突出、口感酥脆、色泽诱人、安全性高、GI较低。该结果可为青稞木糖醇酥性饼干的研发提供一定的参考。     

银耳酥性饼干的工艺优化及消化特性评价

以银耳粉和低筋面粉为主要原料,经冷粉面团制作工艺,以饼干质构(硬度、咀嚼性、脆性)、色泽和感官评分为指标,通过单因素和响应面优化试验获得银耳酥性饼干工艺的最优配方(以低筋面粉100 g计):银耳29 g,植物黄油55 g,白砂糖30 g,玉米淀粉4 g,全脂奶粉7.5 g,鸡蛋液32 g,水10 g,焙烤温度170℃。该配方饼干色泽诱人,酥脆可口。在此条件下,饼干的血糖生成指数(glycemic index,GI)由77.5降至67.6,属中等GI食品,适合需控制血糖值稳定的特殊人群食用。体外试验结果表明,银耳添加量对饼干的GI值有显著影响(p0.05)。     

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