火龙果酸奶的研制

以火龙果和奶粉为主要原料,将嗜热链球菌和保加利亚乳酸杆菌按1∶1的比例混合发酵后加工制成火龙果酸奶。以正交实验得出最佳的火龙果奶发酵条件为火龙果果肉含量4%、蔗糖含量7%、接种量6%、发酵温度为40℃,发酵时间6h。     

搅拌型荔枝发酵酸乳的研制

本文以荔枝为原料，添加适量奶粉，经乳酸菌发酵制成一种新型酸牛奶．将荔枝肉．砂糖和奶粉按照一定比例混合调配，杀菌后按嗜热链球菌和保加利亚乳杆菌1：1接种，接种量为2％，42℃恒温发酵4小时，冷却后搅拌灌装，即制得营养丰富，富有荔枝风味的液态酸奶。     

消暑解毒酸奶的研制

以绿豆和奶粉为主要原料研制消暑解毒酸奶的最适配方。结果表明，绿豆浆与奶粉液以1：3（V／V）的比例混合，加5％的蔗糖，4％-5％的蜂蜜，0．1％的琼脂，按3％的接种量接入保加利亚杆菌和嗜热链球菌（1．2：1），在42℃下发酵3h，可以制得优质消暑解毒酸奶。     

凝固型红豆颗粒酸奶的研制

研究了制备凝固型红豆颗粒酸奶的工艺条件。结果表明:红豆浸泡8 h,蒸煮1 h,效果最佳。采用正交实验,确定酸奶的最优配方和发酵条件为:红豆添加量10%,奶粉添加量8%,蔗糖添加量8%,接种量4%(均为质量分数),发酵时间4 h,发酵温度42℃。     

西瓜发酵乳饮料的研制

以西瓜汁和奶粉为主要原料,杀菌后接种乳酸菌发酵得到西瓜发酵乳饮料,并通过正交试验确定出了最佳技术参数.该西瓜发酵乳饮料的原料最佳配比为西瓜汁添加量80%,奶粉添加量8%,蔗糖添加量8%;制备该西瓜乳饮料的最佳发酵工艺条件为:接种量为3%,发酵时间5.5h,温度为42℃.该产品的风味和组织状态较好,色泽淡红色,酸甜适中,口感细腻,具有西瓜和发酵乳的混合香味.     

金针菇液态发酵含菌丝球酸奶的研制

试验通过对金针菇液态发酵后获得的发酵产物进行加工酸奶,研制出一种新型的食用菌酸奶制品。通过对金针菇发酵液添加量、奶粉添加量、接种量和发酵时间进行单因素实试验和正交实试验,得到了金针菇酸奶的最佳制取工艺。结果表明金针菇发酵液添加量为15%,奶粉添加量为2%,接种量3%,发酵时间为5h小时,所得的金针菇菌丝球酸奶质量最好。     

猪毛菜乳酸菌饮料的研制

为开发出一种营养丰富、味美价廉的猪毛菜乳酸菌饮料,分别研究了菜汁制备时的最佳料水比以及菜汁添加量、奶粉添加量、蔗糖添加量、接种量、发酵时间和发酵温度等因素对猪毛菜乳酸菌饮料品质的影响,并通过正交实验确定出了最佳技术参数.实验结果表明,菜汁制备时,最佳料水比为1:2;猪毛菜乳酸菌饮料的最佳生产工艺为:发酵温度41℃、菜汁25%、奶粉9%,蔗糖9%、接种量为2%、发酵时间3.0h.     

马克斯克鲁维酵母复合乳酸饮料生产工艺

对马克斯克鲁维酵母复合乳酸饮料的生产工艺进行研究。通过响应面分析法确定马克斯克鲁维酵母复合乳酸饮料的最佳条件,即马克斯克鲁维酵母和乳酸菌以质量比1︰20混合发酵,奶粉添加量为9.7%,接种量为6.8%,发酵温度为38℃,发酵时间为5.2 h。     

酒酿酸奶的研制

以糯米为原料,采用中温发酵,将糯米酿制成甜酒酿。同时以奶粉为主料,复合其它辅料,接种保加利亚乳杆菌和嗜热链球菌,40℃发酵4.5h,4℃熟化10h,制成酸奶。将发酵好的甜酒酿和酸奶以1∶1比例调配,生产出风味良好、口感细腻、气味醇香的酒酿酸奶,无防腐剂情况下4℃时保质期可达3d。     

搅拌型龙眼酸奶的研制

以龙眼汁和奶粉为主要原料研制一种复合型发酵酸奶。从产品感官质量和稳定性入手,应用正交实验法,确定了合理的配方和适宜的发酵工艺条件。结果表明,龙眼酸奶的主要原料最佳配比为奶粉与水质量之比为1∶8,龙眼汁添加量7.5%,复合稳定剂为淀粉0.10% 果胶0.025% CMC0.05%,最佳的发酵工艺条件为接种量5%,发酵温度为42℃,发酵时间为2.5h,将得到保健功效的搅拌型龙眼酸奶。     

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