杨梅米醋带渣发酵工艺

以杨梅带渣果浆和糯米为主要原料,以“安琪”果酒活性干酵母、醋酸杆菌AS1.41为菌种发酵杨梅保健米醋.研究分析了杨梅果浆的添加时机、杨梅果浆添加量、果酒酵母接种量、醋酸发酵温度、装液量、醋酸发酵时间等对酒精发酵和醋酸发酵的影响,确定了杨梅米醋带渣发酵的最佳工艺条件:选择在米酒第一次发酵开耙时添加杨梅果浆,杨梅果浆添加量:醪液(v∶v)2∶1,果酒酵母接种量0.08％;醋酸发酵在初始酒精浓度7％、恒温振荡培养转速150 r/min的条件下,最佳工艺参数为发酵温度35℃,装液量35 mL/250 mL,发酵时间96 h.酿制出来的杨梅果醋红润鲜亮、杨梅果味浓郁、酸甜适口.     

柿果糯米黄酒的研制

以柿果、白糯米为原料，采用安琪葡萄酒酵母和Q303为菌种生产柿果糯米黄酒。安琪酵母添加量为0．3％；前酵温度28—32℃，发酵5—6d，取上清液用白糯米发酵汁、50度米酒调整酒度、糖度，添加3．5‰琼脂蒸煮处理得清液，即初酒。再将发酵糟添加0．4％酵母进行二次发酵，蒸馏得45—50度的柿果酒，将初酒清液和二次发酵酒清液封缸陈酿后得柿果糯米黄酒。(孙悟)     

番石榴米酒酿造工艺优化

该文以番石榴和糯米为原料,在米酒传统酿造工艺的基础上加入番石榴汁进行酿制,研究番石榴汁添加量、发酵时间、酒曲添加量,番石榴汁添加时间、发酵温度对番石榴米酒品质的影响。基于单因素试验结果,利用响应面法对酿造工艺进行优化,最佳发酵工艺条件：发酵时间8 d、酒曲添加量0.6%、番石榴汁添加量41%,验证试验显示该条件下番石榴米酒感官评分为88.7±1.5,酒精度为（15.2±0.3）%vol,所得番石榴米酒酒香浓郁并伴有番石榴的果香、口感醇厚、色泽清亮。     

杨梅果酒发酵工艺的研究

探讨以葡萄酒活性干酵母为菌种,涪陵地产新鲜杨梅全汁为主要原料,采用液态深层发酵技术开发研制杨梅保健酒发酵工艺,通过单因素试验对杨梅果酒果胶酶添加量、酵母接种量、糖度、偏重亚硫酸钾添加量、发酵温度等进行研究,再采用正交试验优选出杨梅保健果酒发酵的最佳工艺参数。鲜杨梅不经漂烫直接榨汁时添加果胶酶40mg/L,过滤得原汁,用安琪葡萄酒高活性干酵母进行活化、扩培制成酒母。杨梅保健果酒发酵的最佳工艺参数:酵母菌液接种量为5%,偏重亚硫酸钾150 mg/L,糖度180 g/L,发酵温度为27℃。     

红曲软枣猕猴桃发酵酒的研制

为研制一款集红曲保健功能和软枣猕猴桃营养价值于一体的复合果酒,该研究以糯米、软枣猕猴桃为原料,红曲、酵母为糖化和发酵菌种,通过单因素和正交试验探究红曲软枣猕猴桃发酵酒的最佳工艺参数对感官评分和理化指标的影响。结果表明,最佳工艺参数为红曲添加量8%（以干米计）、果浆添加量80%（以红曲米酒计）、酵母添加量0.1%（以发酵前红曲米酒和果浆总质量计）、发酵温度26 ℃。此优化条件下,酿制的红曲软枣猕猴桃发酵酒酒精度为14.2%vol、还原糖为3.6 g/L、总浸出物为4.8 g/L、甲醇为227.0 mg/L,色泽呈琥珀色、口感醇厚、酸度适中、红曲香和果香协调浓郁,适口性好。红曲软枣猕猴桃发酵酒的研制可以丰富市场果酒品种,为红曲软枣猕猴桃发酵酒的开发提供参考。     

香蕉米酒酿造工艺的响应面法优化

以糯米、香米、香蕉为原料酿造香蕉米酒,为米酒资源的进一步开发奠定试验基础。以感官评分为评价指标,研究香米与糯米比例、酒曲添加量、香蕉汁添加量对香蕉米酒品质的影响;在单因素试验基础上进行响应面法优化香蕉米酒的酿造工艺。试验结果表明,香蕉米酒制作的最佳工艺条件为:香米与糯米的质量配比为1∶4、酒曲添加量为0.40%、香蕉汁的添加量为28.00%。按照此优化方法,香蕉米酒感官评分最高,为93.98分,酒精度为4.60%vol。该研究发酵所得香蕉米酒酒香浓郁并伴有香蕉的果香。     

发酵型桂花米酒酿制工艺的研究

研究以糯米为主要原料,辅以桂花糖渍,安琪甜酒曲为发酵剂,酿制桂花米酒。通过正交试验,分析得出桂花米酒酿制的最佳工艺条件,即甜酒曲添加量0.4%,桂花糖渍添加量1%,产醇发酵温度18℃发酵3 d。在此条件下酿制的桂花米酒颜色淡黄清亮,花香幽雅与醇香谐调、口感良好,质量符合有关食品标准。     

糯米百香果果酒加工发酵配方研究

为了加工糯米百香果果酒,以百香果为原料,糯米和白砂糖为辅料,采用闽西客家米酒曲和安琪果酒酵母进行发酵,在单因素试验基础上进行正交试验,优化最佳发酵配方。结果表明,最佳发酵配方为,以100 g百香果果肉计,糯米65 g、果酒酵母0.4 g、客家米酒曲1.75 g、冷开水165 g。按此配方得出的产品具有以下特点:百香果香味浓郁、酒香醇厚、酸甜醇味柔和、且圆润爽口,酒精度15%Vol~18%Vol。     

人参果果酒的研制

以人参果为原料研制人参果果酒.对人参果护色、酶解后取汁,添加酵母进行酒精发酵,并进行澄清等工艺制得人参果果酒.通过正交试验确定酒精发酵的工艺条件为发酵温度24℃,发酵时间8d,酵母液添加量为4％;防褐变处理采用0.4％VC效果最佳;澄清采用皂土0.2％和明胶0.02％效果最佳.采用本方法可酿制出澄清透明、风味醇正的人参果果酒.     

孝感米酒和米酒佳肴

孝感米酒是湖北孝感市的特产，它以当地盛产的优质珍珠糯米为原料，以传统的凤窝酒曲发酵酿制而成。酿制成熟的原汁米酒米散汤清、汁浓醇甜。     

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