北京盈盛恒泰科技有限责任公司技术专栏

<正>日本INSENT味觉分析系统(电子舌)——直接分析样品的酸味、甜味、苦味、咸味、鲜味、涩味及苦的回味、鲜的回味、涩的回味数值。——适用于原料采购、市场策略、销售预测、产品研发、质量控制等所有需要进行客观味觉评估的场合。——是真正同人的味觉感官评价相吻合的味觉分析仪器。     

北京盈盛恒泰科技有限责任公司——专业食品感官分析仪器供货商

正味道分析(味觉分析系统即电子舌)日本INSENT公司TS-5000Z系列智能味觉分析系统,即电子舌,采用了同人舌头味觉细胞工作原理相类似的人工脂膜传感器技术,可以客观数字化的评价食品或药品等样品的苦味、涩味、酸味、咸味、鲜味、甜味等基本味觉感官指标,同时还可以分析苦的回味、涩的回味和鲜的回味(丰富度)。     

北京盈盛恒泰科技有限责任公司技术专栏

<正>日本INSENT味觉分析系统(电子舌)——直接分析样品的酸味、甜味、苦味、咸味、鲜味、涩味及苦的回味、鲜的回味、涩的回味数值。——适用于原料采购、市场策略、销售预测、产品研发、质量控制等所有需要进行客观味觉评估的场合。——是真正同人的味觉感官评价相吻合的味觉分析仪器。     

不同脱苦涩处理刺梨果汁风味品质分析

以刺梨果汁为原料,采用感官评定方法结合电子舌技术,探讨不同苦涩味的脱除方法对刺梨果汁风味品质的影响,并确定最佳脱除条件。结果表明：刺梨汁整体味感以酸味、涩味和苦味为主。添加剂组合方法脱除刺梨汁苦涩味效果明显优于单一方法,其最佳脱苦涩味的方法为添加质量分数0.12%单宁酶和质量分数0.015%三氯蔗糖,该方法处理的刺梨汁感官评定分值最高、结果最佳、口感适宜、苦涩味最轻,经电子舌检测在苦味和涩味2 个传感器上的响应值最小。在食品风味评价中,应将电子舌技术结合传统感官评定方法进行分析,利于获得更准确、可靠的结论。     

咖啡味觉量化的初步研究

为了实现咖啡味觉指标的量化,比较不同风味市售咖啡的味觉差异,本研究选择雀巢和伯郎两大品牌共10种口味的咖啡,利用TS-5000Z味觉分析系统,从酸、甜、苦、鲜、咸、涩以及苦味回味、涩味回味和鲜味回味(即丰富度)等9个味觉指标对样品进行评价,并结合感官排序法,验证仪器测试与口尝实验的一致性。结果表明,所选咖啡的味觉差异主要体现在酸味、甜味、咸味、鲜味和丰富度上,雀巢特浓和香醇的酸味最弱,甜味和鲜味最大,七种伯朗咖啡的味觉差异相对较小,结合感官评价,雀巢每种口味都有较为突出的特点,伯朗则变化较小。电子舌测试与感官评价值的拟合度较高(R2均大于0.8),并且提高了对样品的区分性和味觉指标的灵敏度,可以充分量化咖啡饮料的各项味觉指标,明确产品味觉特点,对产品的研发、改进或升级提供数据支持,也是产品品质评价的有效工具。     

电子舌对不同类型酒味觉的辨识研究

为了研究电子舌对不同类型酒的识别能力。 将所有样品按照酒∶水=1∶2（V/V）进行稀释后,采用TS-5000Z味觉分析系统进行 检测,再对传感器信号进行主成分分析（PCA）、雷达图分析和稳定性分析。结果表明,主成分1（PC1）为苦味,贡献率为91.5%;主成分2（PC2）为酸味,贡献率为5.8%。 1#和4#样品味觉相近,分为一类;2#、3#和5#样品味觉相近,分为一类;6#、7#样品与其他样品的味觉都不 一样,各自单独分为一类。 2#样品酸味最强,涩味最弱;7#样品酸味最弱、涩味最强、苦味最强;4#样品苦味最弱。 可见电子舌能有效区 分不同类型酒的味感差别。     

高发芽率青稞饮料试制研究初报

以发芽率达到80%以上的全谷物高原青稞为原料,进行了不同温度和时间处理青稞的烘烤试验,得出最佳烘烤条件为:温度150℃、时间90min,此条件下制作的青稞饮料具有浓郁的烤麦风味。然后研究了不同乳化稳定剂对青稞饮料稳定性的影响,通过正交试验,结果表明,卡拉胶添加量为0.01%、黄原胶添加量为0.02%、结冷胶添加量为0.03%、复合乳化剂添加量为0.05%,此条件制备的青稞饮料具有良好的稳定效果。     

基于电子舌对不同类型白酒味觉的研究

采用电子舌对不同类型白酒进行味觉测试,通过酸味、甜味、苦味、咸味、涩味五种味觉传感器,检测不同类型白酒的味觉特点和味觉差异,运用主成分分析（PCA）技术,分析味觉测试值,其中苦味、涩味和苦味回味贡献率70.45%,为第一主成分（PC1）,酸味、甜味贡献率23.64%,为第二主成分（PC2）,第一主成分和第二主成分贡献率之和为94.09%,数据可靠且有效。研究发现电子舌能将清香型白酒、浓香型白酒和酱香型白酒进行区分,为电子舌味觉系统应用于白酒品评评价方面提供了一定的理论基础。     

北京盈盛恒泰科技有限责任公司——专业食品感官分析仪器供货商

<正>味道分析(味觉分析系统即电子舌)日本INSENT公司TS-5000Z系列智能味觉分析系统,即电子舌,采用了同人舌头味觉细胞工作原理相类似的人工脂膜传感器技术,可以客观数字化的评价食品或药品等样品的苦味、涩味、酸味、咸味、鲜味.甜味等基本味觉感官指标,同时还可以分析苦的回味、涩的回味和鲜的回味(丰富度)。这是一款真正意义上可以同人类味觉感官相匹配的仪器.对于食品、药品等产品质量控制.新品研发、投诉处理、产品打假等各种对味觉评估有要求的场合,是一款非常难得的有效工具!     

北京盈盛恒泰科技有限责任公司——专业食品感官分析仪器供货商

正味道分析(味觉分析系统即电子舌)日本INSENT公司TS-5000Z系列智能味觉分析系统,即电子舌,采用了同人舌头味觉细胞工作原理相类似的人工脂膜传感器技术,可以客观数字化的评价食品或药品等样品的苦味、涩味、酸味、咸味、鲜味、甜味等基本味觉感官指标,同时还可以分析苦的回味、涩的回味和鲜的回味(丰富度)。这是一款真正意义上可以同人类味觉感官相匹配的仪器,对于食品、药品等产品质量控制、新品研发、投诉处理、产品打假等各种对味觉评估有要求的场合,是一款非常难得的有效工具!     

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