茶叶面包的研制

本文介绍将绿茶进行热处理,得到热加工茶汁,然后将其添加到小麦粉中制成茶味浓郁面包的工艺过程。     

茶饮料国际拟年底出台

日前，来自中国饮料工业协会的消息称，茶饮料国家标准文本草案已开始在业内征求意见，新国标最早今年底出台。茶味过淡或茶多酚含量不够都将不能称作茶饮料了，只能叫“茶味饮料”。     

国家酝酿制定茶饮料标准

茶饮料标准正在制定中，标准正式出台后，茶味过淡或茶多酚含量不够都将不能称茶饮料，只能叫“茶味饮料”。     

茶饮料21世纪饮料产业新霸主？

全球第三大调查公司--AC尼尔逊公司一项对我国饮料市场的调查显示，茶味饮料的销售正以每年300%的速度增长。从这个调查数字不难看出，茶味饮料在我国的发展时间很短，但速度却很快。     

面包老化抑制因素的研究

在西方国家，面包是餐桌上的主食，面包的质量与人们的健康和幸福息息相关。随着经济水平的提高，面包已经悄悄走进了我们的生活。但是，老化的面包口感差，易掉屑且香味丧失，不为广大消费者所接受。我们需要研究面包老化的机理，并从理论上寻找抑制面包老化的方法，提高面包的质量。本文综述了近年来国内外对面包老化的研究结果，从水分、淀粉结晶、添加剂、淀粉酶、贮存和温度几方面论述了抑制面包老化的方法。并对抑制面包老化，全面提高面包质量的研究趋势进行了展望。     

两次搅拌面团一次发酵生产面包新工艺

采用两次搅拌面团，一次发酵工艺生产面包，测定了面包比容、香气含量、面包硬度、弹性和剪切力。实验结果表明，采用两次搅拌新工艺生产面包，可显著地增大面包比容，改善面包风味，延长面包保鲜期。     

冷冻面团焙烤面包的生产技术

冷冻面团焙烤面包的生产技术李勇苏世彦面包加工厂里大批量烤制的面包，经成品库及运往各商店或快餐店销售过程中的存放，烤制面包的香气、风味都有所损失，因此消费者很难吃上特别新鲜的面包，从而直接影响了面包制造业的销售量。近年来推出的用冷冻面团烤制的面包，给消...     

国外面包改良剂研究进展

面包改良剂主要由氧化剂、还原剂、乳化剂及酵母营养物组成，本文对面包改良剂的几种主要成分进行了探讨，评述了它们在面团中的作用机理及其对面包质量的影响，提出了我国面包改良剂研究任务。     

奶酪

至于奶酪与面包的勾搭，与葡萄酒的亦步亦趋之法殊为不同，要点是以面包的“枯”来反衬乳酪的“妖”。是故，那些加了大量牛奶鸡蛋和砂糖的甜软面包皆弃之不用，单纯的成味面包或黑麦面包是不二之选。     

法式面包曲折前行

缺点变成新卖点 一年前，在2006成都春季糖酒会上，一种名叫法式面包的休闲食品引起了很多经销商的关注。这种面包看上去和蛋糕坊出售的普通小面包外形相似，但是由于采用了德国进口的生产设备和比较先进的工艺流程，没有添加防腐剂，保质期也长达3个月，解决了面包行业保鲜时间短，不能进行长途运输的问题。因为这种面包和传统烘焙的面包相比，水分更少口感更硬，正如同传统的法式面包的特点——表皮很硬，内里松软，所以厂家将其命名为“法式面包”，将其缺点转换成了卖点，并且有了一些舶来品的味道，名字更加诱人。     

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.     

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     

INFOPRINT 2014 was Successfully Held in Dongguan

Sponsored by Printing and Printing Equipment Industries Association of China （PEIAC） and organized by Print China magazine, the Seventeenth Beijing International Printing Information Conference （INFOPRINT 2014） was successfully held on 11th Dec. 2014 at Dongguan Exhibition International Hotel.