川明参保健猪肉香肠的研制

在传统四川风味香肠的加工工艺基础上,通过川明参添加量、猪肉肥瘦比、淀粉添加量进行单因素试验和正交试验,以香肠的色差、质构性能和感官特性为评价指标,确定了川明参保健猪肉风味香肠的最佳配方。结果表明:在基础配方不变的情况下,影响香肠品质的大小顺序是川明参淀粉猪肉肥瘦比,即川明参用量10%、猪肉肥瘦比2∶8、淀粉添加量8%。在此条件下,质构与感官品质较高。     

果蔬复合鹿肉香肠工艺配方优化与特性研究

以不同价格、营养、风味和加工特性的鹿肉、猪肉为原料,加果蔬、膳食纤维和低聚异麦芽糖等营养强化物研制开发营养均衡、风味独特的果蔬复合鹿肉香肠。通过单因素试验研究大豆蛋白、马铃薯淀粉、低聚异麦芽糖、膳食纤维和果蔬用量及鹿肉猪肉质量比对香肠物性指标和品质的影响。结果表明：大豆蛋白和马铃薯淀粉对香肠的质构特性影响较大,低聚异麦芽糖对其影响较小,确定大豆蛋白和马铃薯淀粉的最佳质量分数分别为6%、5%;膳食纤维选苹果皮,蔬菜选香菇。应用正交试验、因子分析、极差分析和感官评定对主要原料配方进行优选,得到主要原料最佳配方为鹿肉猪肉质量比4:6、香菇质量分数15%、膳食纤维(苹果皮)质量分数5%、低聚异麦芽糖质量分数4%。最优样品的理化和微生物指标均达到同类产品的国家标准。     

富含膳食纤维的低脂肪燕麦香肠配方研究与优化

将不同处理的燕麦辅料添加到传统香肠中,以加工一种富含膳食纤维的低脂肪燕麦香肠。研究燕麦整粒米、破碎米、粉3种添加形态及其添加量对香肠感官品质的影响,探讨了加工技术及最佳配方。以燕麦香肠的感官品质为检测指标,针对燕麦、淀粉、蛋白及脂肪的添加量进行单因素实验,并对结果进行响应面优化,最终确定燕麦香肠的配方(以100g肉计)为:燕麦破碎米添加量15.8%、马铃薯淀粉添加量3%、大豆蛋白添加量2.2%,脂肪(猪肉肥膘)添加量13%。制得的燕麦香肠比传统香肠脂肪含量降低了15.5%,膳食纤维质量分数达2.01%。     

淀粉添加量对西式香肠品质的影响

本试验采用单因素四水平(2%、4%、6%、8%)设计,研究了不同淀粉添加量对西式香肠品质的影响.通过对样品的感官指标评定和贮藏试验,结果表明:淀粉添加量对西式香肠的感官品质有显著影响,在西式香肠配方中添加4%的淀粉,香肠品质最佳,产品经过80℃40min的蒸煮处理后,在0～4℃下,贮藏期可达到8d以上.     

小米香肠的研制

实验主要研究小米在猪肉香肠中的应用及其对香肠品质的影响。实验以猪肉为主要原料,添加小米、玉米淀粉等辅料,通过单因素实验和正交实验确定小米香肠的最佳工艺配方:小米添加量为原料肉的6%,淀粉添加量为原料肉的8%,猪肉肥瘦比例为1:4,所得产品感官评价、质构测定结果均较好。     

外源添加物对鱿鱼丸品质的影响

目的 以鱿鱼鱼糜为原料,探讨玉米淀粉、猪肉膘、谷氨酰胺转胺酶（TGase）对鱿鱼丸质构品质的影响,建立优质鱿鱼丸配方工艺。方法 在单因素试验的基础上,以鱿鱼丸硬度、弹性和内聚性为评价指标,选择合适的因素和水平,采用正交试验对外源添加物最适添加参数进行优化。结果 在基础配方上添加14%玉米淀粉,2%猪肉膘和0.4%TGase,鱿鱼丸综合质构品质最佳;扫描电镜结果显示优化组鱼糜凝胶的微观结构紧密均匀,凝胶网络致密,无大的孔洞。结论 通过外源添加物参数优化可提高鱿鱼丸品质,满足消费者对高品质鱿鱼丸的需求,为水产品加工企业提供技术支持。     

淀粉类对低温乳化香肠品质的影响

以鸡肉和猪肉为主要原料,采用肥瘦肉分离斩拌法制备低温乳化香肠,研究原淀粉及其变性淀粉对低温乳化香肠保水保油性、质构和感官品质的影响。结果表明:在7种淀粉中,添加原淀粉如玉米淀粉和木薯淀粉的乳化肠保水保油性最差,而添加玉米交联酯化淀粉和木薯交联淀粉(SH50)的乳化香肠的保水保油性最好;对低温乳化香肠质构改善作用最优的为木薯交联淀粉(SH50),其次为玉米交联酯化淀粉、马铃薯醋酸酯化淀粉(P0170)、木薯醋酸酯化淀粉(T0170)、木薯淀粉、玉米淀粉、复合变性淀粉(DURAT010)。添加木薯交联淀粉(SH50)的乳化香肠感官评分最高。     

添加猪皮提取物对猪肉糜香肠品质的影响

研究添加猪皮提取物对猪肉糜香肠品质的影响.采用单因素和正交试验,考察猪皮提取物添加量、猪肉糜香肠煮制温度和煮制时间对猪肉糜香肠的质构、系水力和感官品质的影响,确定猪皮提取物在一定配方的猪肉糜香肠中的最佳添加量及煮制工艺条件.结果表明:猪皮提取物添加量为6％、75℃煮制40min时,猪肉糜香肠质构特性、保水能力和感官品质最佳.     

正交试验优化传统中式裙带菜香肠制作工艺

以裙带菜和猪肉为主要原料,制成一种营养丰富的裙带菜香肠。通过裙带菜、淀粉、大豆分离蛋白的不同添加量以及瘦肥肉的比例的4个单因素试验和正交试验,以香肠的感官特性及质构性能为评价指标,确定了裙带菜香肠的最佳配方。试验表明:裙带菜香肠的最佳工艺条件是裙带菜的添加量为20%,淀粉的添加量为18%,大豆分离蛋白的添加量为5%,瘦肥肉的比例为4.0∶1。     

胡萝卜海带香肠的研制

以胡萝卜、海带及猪肉为原料,开发出一种蔬菜香肠新产品,即胡萝卜海带香肠。通过胡萝卜海带添加比例,蔬菜总添加量,淀粉添加量和瘦肉与肥肉比4个单因素试验和正交试验,以香肠的感官特性为评价指标来确定胡萝卜海带香肠的最佳配方和最佳工艺条件。结果表明:当胡萝卜海带质量之比为2∶1,蔬菜添加量为20%,肥瘦肉质量比为2∶8,淀粉添加量为10%时,制得的香肠产品最佳。     

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