几种常见食品掺伪及其检测技术介绍

对乳制品、植物油、酒、肉制品、调味品、蜂产品等几种常见食品掺伪现象及其检测技术作了简要介绍,以期能为消费者保护自身权益和相关人员机构的研究提供一定帮助。     

真空制盐发展概况及工艺述评

真空制盐发展至今有100多年的历史,作者对国内外真空制盐的发展作了简要介绍,同时,对国内目前几种不同学科卤水制盐的主要生产工艺流程、制盐用蒸发结晶罐及材质的选择作了简要述评和推荐,供同行参考。     

蒋大姐谈厨经

家庭作菜往往是在不断学习摸索,有时试着采取不同的烹调原料,就会得到意想不到的美味佳肴.下面介绍几种以酒作烹料,使菜肴更鲜美的小窍门.     

典型夹心糖制作、工艺简介

<正>夹心糖一般都是以硬糖坯作外皮,包裹各种各样不同的馅心或以糖料加入各种浓缩果汁,酒汁,经轧制或注模制作而成.按其馅心种类的不同,大体上可分为酥心、粉心、酱心、酒心等.品种多样,滋味各异.当然也可以制作适合儿童生长发育的强化营养糖果.现简单介绍几种典型品种的制作工艺方法.     

杀菌纸的加工方法

杀菌纸是具有消毒杀菌功能的一种特种纸.本文对杀菌纸用杀菌剂的种类,杀菌纸的杀菌机理,杀菌纸的加工方法作了简要介绍,列举了几种常见的杀菌纸.     

黄酒中苦味物质及其来源探讨

对黄酒中的苦味物质作了简要介绍，对苦味物质的性质进行了描述，并对苦味物质的来源作了分析并对减少酒中的苦味物质提出了可行性建议。     

纱线条干均匀度检测技术的研究

主要介绍了检测纱条不匀的传统方法和它们各自的优缺点 ,对近年来几种新兴的纱线条干检测方法也作了简要介绍 ,并简要说明其发展趋势。     

解读贞元增酒五百年发展史(下)

介绍了贞元增酒从1750年被乾隆皇帝皇封为御品第一酒开始，在前后几百年中各不同历史时期的发展过程及贞元增酒的内涵和特点。     

纱线条干均匀度检测技术的研究

主要介绍了检测纱条不匀的传统方法和它们各自的优缺点，对近年来几种新兴的纱线条干检测方法也作了简要介绍，并简要说明其发展趋势。     

在国产拉舍尔提花经编机上开发系列化产品

本文对在部分国产拉舍尔提花经编机上进行的产品开发做了简要的介绍,并对带压纱板的 ZJG-5F 型提花经编机的编织工艺、产品设计作了较详细的说明,同时还介绍了有关的纹版制作技术。对几种不同的编织工艺应用实例也做了分析。     

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.