共固定化多元混菌发酵功能稻米保健醋饮料的研究

以功能稻谷——活性糙米为原料，采用固定化多元混菌细胞发酵技术生产功能稻米醋酸饮料的发酵条件进行了研究。实验结果表明，最佳发酵工艺为：固定化多菌种接种配比为根霉：酿酒酵母：产香酵母：醋酸菌为4：2：2：1；固定化细胞凝胶粒子接种量为10％；发酵温度为25℃；固定化细胞混合细胞发酵时间为10～15d。     

共固定化多元混菌发酵功能稻米乳饮料的研究

以活性糙米为原料，采用多元混菌细胞固定化发酵技术生产功能稻米乳饮料的发酵条件进行了研究。实验结果表明：最佳发酵工艺为，多菌种接种配比为根霉：酿酒酵母：产香酵母：嗜酸乳酸菌为4：2：2：1；固定化细胞凝胶粒子接种量为10％；发酵温度为25℃；固定化细胞发酵时间为48～80h。     

多菌种共固定化发酵果蔬米乳饮料的研究

以糯米和果蔬为原料，采用多菌种细胞固定化发酵。对固定化发酵条件生产米乳饮料的工艺技术条件进行了研究。实验结果表明：最佳发酵工艺为，多菌种接种配比为根霉；酿酒酵母：产香酵母：嗜酸乳酸菌为4：2：2：1；固定化细胞凝胶粒子接种量为10％；发酵温度为25℃；固定化细胞为48-80h。     

固定化细胞混合发酵黄瓜汁饮料的研究

以黄瓜汁为主要原料,进行多菌种固定化混合发酵蔬菜饮料的研究,结果表明,乳酸菌和醋酸菌以１．５％浓度的海藻酸钠固定化包埋为宜,固定化乳酸菌和醋酸菌最佳体积比为１∶２,接种量为２０％,发酵温度２８℃,发酵时间２ｄ。     

共固定化多元混菌发酵苦瓜保健醋饮料的研究

以苦瓜为原料,采用固定化多元混菌发酵技术生产苦瓜醋酸饮料,对发酵条件进行了研究。结果表明,固定化多菌种接种配比为根霉：酿酒酵母：产香酵母：醋酸菌为4：2：2：1;固定化细胞凝胶粒子接种量为10％：发酵温度为25℃：固定化混合细胞发酵时间为3d-5d。     

共固定化多菌种混合发酵生产稠酒的研究

以糯米为原米,采用多菌种共固定化细胞混合技术发酵生产稠酒进行了研究。实验结果表明,固定化多菌种发酵生产稠酒的最佳发酵工艺是多菌种固定化细胞接种比量为根霉：酿酒酵母：产香酵母：红曲霉＝３：１：２：１;固定化凝胶粒子填装量为８％;发酵温度为２０℃,发酵时间为９６ｈ。     

固定化共生发酵红茶菌饮料工艺的研究

采用固定化细胞技术实现红茶菌饮料的固定化共生发酵,对其工业化生产具有重要意义。本实验以发酵液中的总酸含量、总糖利用率以及对发酵液的感官评价分值为考查指标,探讨了蔗糖添加量、接种量、菌种比例以及发酵时间等因素对固定化细胞共生发酵红茶菌饮料的影响,并通过正交实验优化了固定化共生发酵红茶菌饮料的最佳工艺条件。结果表明:当蔗糖添加量为70g/L,接种量为7.5%,菌种比例(酵母菌J∶醋酸菌C)为6∶4,发酵时间为6d时,制得的红茶菌饮料色泽均匀,香味怡人,酸甜可口,具有红茶菌发酵液特有的风味。     

多菌种共固定化发酵保健红醋的研究Ⅰ产酒发酵试验

该文对采用固定化细胞多菌种进行酒精和醋酸的双轮发酵生产保健红醋的工艺进行了研究。第1阶段发酵以德氏根霉、酿酒酵母与产香酵母共固定化细胞对大米原料进行糖化和酒精发酵。结果表明，根霉与酿酒酵母、产香酵母共固定化细胞的最佳菌种量配比为4：3：2；固定化细胞粒子接入量为10％；第1阶段糖化及酒精发酵的最适温度为30℃～33℃，发酵时间为70h。     

共固定化多菌种混合发酵生产保健红醋的研究：Ⅰ共固定化多菌种酒精发酵条？

对以德氏根霉、酿酒酵母、产香酵母共固定化细胞对大米原料进行糖化和酒精发酵进行了研究，试验结果表明：根霉与酿酒酵母、产香酵母共固定化细胞的最佳菌种量配比为４：３：２；固定化细胞粒子接入量为１０％。第一轮糖化及酒精发酵的最适温度为３０～３３℃，发酵时间为７０ｈ左右。     

共同定化多菌种发酵椪柑果醋工艺研究

以海藻酸钠为固定化材料,研究了多菌种（酿酒酵母、产香酵母、乳酸茵、醋酸菌）共固定化技术在椪柑果醋发酵中的应用。结果表明,固定化多菌种发酵椪柑果醋的最佳工艺条件为：酒精发酵阶段,接种量20％（v／v）、发酵温度32℃、时间60h、底物糖度23％;醋酸发酵阶段,接种量20％、发酵温度35℃、时间7d。所酿造的果醋具有椪柑的固有色泽、香气,无沉淀物,酸味柔和适中。     

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