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天然维生素E微胶囊化研究 总被引:12,自引:1,他引:12
本文研究了制造微胶囊化天然维生素E粉末的工艺和技术。工艺过程包括乳化液的制备和喷雾干燥造粒。影响工艺及产品性能的因素包括原料配方、乳化工艺条件、均质压力及喷雾干燥造粒工艺条件等。结果表明:原料配比为天然维生素E30~40%,乳化剂4~5%,稳定剂0.5~1.2%,碳水化合物和蛋白质等壁材55~65%。最佳均质压力为35~40MPa,喷雾干燥工艺条件为进风温度190℃,出风温度75℃,进料温度50~60℃,进料流量130ml/min。性状分析及贮存实验表明:微胶囊型天然维生素E的水溶性、流动性、分散性及稳定性等性能指标良好。 相似文献
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微胶囊型维生素E粉末的研究 总被引:4,自引:0,他引:4
本文研究了制造微胶囊型维生素E粉末的微胶囊化工艺及技术。其工艺过程包括O/W型乳化液的制备、均质与喷雾干燥造粒,影响其工艺及产品性能的因素有原料配方、乳化工艺条件、均质压力及喷雾干燥造粒工艺条件。通过实验研究得出:原料配方为维生素E30 ̄40%、HLB值为5 ̄7的混合乳化剂4 ̄6%、稳定剂0.2 ̄0.4%及碳水化合物和蛋白等壁料55 ̄65%,最佳乳化工艺条件为加水量2 ̄3倍于维生素E和固型物总重量 相似文献
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微胶囊型天然维生素E粉末的研制 总被引:8,自引:0,他引:8
本文研究了喷雾干燥法制造微胶囊型维生素E粉末的工艺及技术。结果表明 :制造微胶囊型天然维生素E的壁材及其最佳组合为阿拉伯胶∶糊精∶玉米糖浆=22 5%∶25 0 %∶52 5 % ;心材与壁材的适宜比例为6∶5 ;均质压力为30MPa;喷雾进料温度60℃、进料流量150ml/min、进风温度195℃、出风温度70℃。 相似文献
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番茄红素的微胶囊化研究和稳定性实验 总被引:7,自引:0,他引:7
研究了喷雾干燥法制备微胶囊番茄红素粉末的工艺及技术,结果表明,在天然番茄红素微胶囊的生产过程中,制造微胶囊型番茄红素的壁材最佳组合为:以阿拉伯胶和糊精以1∶1的质量比混合作为壁材,原料固形物含量为20%,芯材和壁材的适宜比例为1∶6;高压均质可有效地提高天然番茄红素的微胶囊化效率和微胶囊化产率,其最佳均质压力为30MPa;最佳喷雾干燥造粒工艺条件为:进风温度190℃、出风温度65~75℃、进料量为4.0mL/min、进风压力为0.15MPa。 相似文献
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研究了喷雾干燥法制备高包埋率微胶囊化二丁基羟基甲苯(BHT)的壁材组成及工艺条件。结果表明,最佳组合为:BHT/壁材20%、阿拉伯胶/麦芽糊精1:3、海藻酸钠含量0.6%、乳化温度70℃、一级均质压力20MPa、二级均质压力45MPa、喷雾干燥进风温度200℃、出风温度90℃,该工艺条件下BHT的微胶囊化效果最好,包埋率最高。 相似文献
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以水解大豆蛋白为主要壁材的β-胡萝卜素微胶囊化 总被引:2,自引:0,他引:2
水解大豆蛋白分别与糊精(SPH+MD)以及蔗糖(SPH+S)复配为壁材微胶囊化β-胡萝卜素,研究结果表明,SHP+S壁材体系的微胶囊化产品的效率明显优于SPH+MD壁材体系产品,产率无显著差异。相应的较优工艺参数为:壁材中蛋白质与蔗糖比例为6∶14,体系壁材浓度20%,黄原胶浓度0.5%,乳化时均质压力40Mpa(乳化温度70℃),喷雾干燥进风温度195℃(出风温度80~90℃)。 相似文献
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研究了喷雾干燥法制备微胶囊化甾醇酯的工艺。研究结果表明:微胶囊化甾醇酯的最优乳化条件为:复合乳化剂配比(单甘酯∶蔗糖酯)为1∶9;乳化剂用量0.75%;壁材用量20%;壁材比(变性淀粉∶麦芽糊精)为1∶5;芯材/壁材为0.5。喷雾干燥法制备甾醇酯微胶囊的最佳工艺参数为:进料温度50~60℃、均质压力50 MPa、进风温度180℃、出风温度80℃、喷雾压力180 KPa。在此工艺条件下微胶囊化效率可达77.8%。 相似文献
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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. 相似文献
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John Gilbert Catherine Simoneau David Cote Achim Boenke 《Food Additives & Contaminants》2000,17(10):889-893
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. 相似文献
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Sophie Guillot Laurence Peytavi Sylvie Bureau Renaud Boulanger Jean-Paul Lepoutre Jean Crouzet Sabine Schorr-Galindo 《Food chemistry》2006
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. 相似文献
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Jesus Simal-Gandara Miguel Sarria-Vidal Arjen Koorevaar Rinus Rijk 《Food Additives & Contaminants》2000,17(8):703-711
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. 相似文献
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M. S. Garcí a-Falc n J. Simal-G ndara S. T. Carril-Gonz lez-Barros 《Food Additives & Contaminants》2000,17(12):957-964
A simple, rapid and inexpensive method has been developed for the determination of benzo[a 相似文献
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H. J. Van Den Top A. Boenke P. A. Burdaspal J. Bustos H. P. Van Egmond T. Legarda A. Mesego A. Mourino W. E. Paulsch C. Salgado 《Food Additives & Contaminants》2001,18(9):810-824
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. 相似文献
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《肉类研究》2014,(2)
<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 相似文献
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《印刷工业》2014,(11):95-95
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%. 相似文献
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《印刷工业》2014,(8):103-103
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 相似文献