共查询到20条相似文献,搜索用时 78 毫秒
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在不同的洗涤条件下,对机织物的水洗尺寸变化率进行了对比试验,探讨了不同洗涤条件对机织物水洗尺寸变化率的影响。 相似文献
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氨纶分散染料染色工艺新探 总被引:1,自引:0,他引:1
对分散染料上染氨纶的染色工艺条件进行了探讨,得出了分散染料染氨纶的最佳工艺条件,并对多种分散染料在最佳工艺条件下的染色效果进行了比较,筛选出了几种染色皂洗牢度较高的助剂。 相似文献
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弱酸性染料氨纶染色工艺新探 总被引:4,自引:1,他引:3
对弱酸性染料上染氨纶的染色工艺条件进行了探讨,得出了弱酸性染料氨轮染色的最佳工艺条件,并对多种弱酸性染料在最佳工艺条件下的染色效果进行了比较,挑选出几种能提高染色皂洗牢度的助剂。 相似文献
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为分析不同微囊化双歧杆菌菌粉在模拟消化道环境的特性,采用静电喷雾微囊化、常规喷雾微囊化和乳化冷冻微囊化方法包埋不同双歧杆菌菌粉,并研究它们通过模拟消化道仿生系统后的存活率、疏水性、自沉淀率、粘附性和细胞脂磷壁酸中脂肪酸含量。它们的体外模拟消化实验结果表明,静电喷雾微囊化双歧杆菌的存活率高于常规喷雾微囊化和乳化冷冻微囊化,静电喷雾微囊化乳双歧杆菌BL03在经过胃液、十二指肠、回肠后的存活率高达55.01%±4.12%。经过模拟消化道后的不同微囊化双歧杆菌,除长双歧杆菌BLL2外,静电喷雾微囊化双歧杆菌疏水性比乳化冷冻微囊化双歧杆菌提高125.14%~368.75%;静电喷雾微囊化双歧杆菌自沉淀率比乳化冷冻微囊化双歧杆菌提高112.50%~372.72%;除长双歧杆菌BLL2外,静电喷雾微囊化双歧杆菌粘附性比乳化冷冻微囊化双歧杆菌提高109.52%~411.11%,静电喷雾微囊化和常规喷雾微囊化方法明显优于乳化冷冻微囊化,静电喷雾干燥乳双歧杆菌BL03的粘附数高达(46.18±2.82)CFU/cell,静电喷雾微囊化乳双歧杆菌BL03包埋率高达93.31%±3.16%。不同微囊化菌株通过模拟消化道后,静电喷雾和常规喷雾微囊化双歧杆菌的C12:0和C6:0脂肪酸含量高于乳化冷冻微囊化,而C18:1n9c不饱和脂肪酸含量低于乳化冷冻微囊化。综合所述,在模拟消化道仿生系统环境胁迫下,静电喷雾干燥是良好的微囊化双歧杆菌方法。 相似文献
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Microencapsulation has been developed by the pharmaceutical industry as a means to control or modify the release of drug substances from drug delivery systems. In drug delivery systems microencapsulation is used to improve the bioavailability of drugs, control drug release kinetics, minimize drug side effects, and mask the bitter taste of drug substances. The application of microencapsulation has been extended to the food industry, typically for controlling the release of flavorings and the production of foods containing functional ingredients (e.g. probiotics and bioactive ingredients). Compared to the pharmaceutical industry, the food industry has lower profit margins and therefore the criteria in selecting a suitable microencapsulation technology are more stringent. The type of microcapsule (reservoir and matrix systems) produced and its resultant release properties are dependent on the microencapsulation technology, in addition to the physicochemical properties of the core and the shell materials. This review discusses the factors that affect the release of bioactive ingredients from microcapsules produced by different microencapsulation technologies. The key criteria in selecting a suitable microencapsulation technology are also discussed. Two of the most common physical microencapsulation technologies used in pharmaceutical processing, fluidized-bed coating, and extrusion-spheronization are explained to highlight how they might be adapted to the microencapsulation of functional bioactive ingredients in the food industry. 相似文献
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洋葱油微胶囊试验研究 总被引:8,自引:1,他引:7
研究了利用分子包囊法制备洋葱油微胶囊工艺及洋葱油微胶囊的质量检测方法,测出微胶囊包埋率为52%,包埋率为7%及溶出速度为0.004-0.005ml/min等主要技术参数。 相似文献
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Optimizing microencapsulation of peanut sprout extract by response surface methodology 总被引:1,自引:0,他引:1
This study was carried out to optimize conditions for peanut sprout extract microencapsulation by response surface methodology (RSM). The coating materials of microencapsulation were medium-chain triacylglycerol (MCT) for primary emulsion, and whey protein concentrates (WPC), maltodextrin (MD) and gum Arabic (AG) for secondary emulsion. The yield of microencapsulation of peanut sprout extract was investigated with respect to four variables (ratio of core and coating materials, concentration of primary emulsifier, ratio of W/O emulsion and secondary coating materials and concentration of secondary emulsifier) in RSM. The optimal conditions for microencapsulation of peanut sprout extract were 1:2 as the ratio of core material to coating material, 1.25% (w/v) of primary emulsifier concentration, 1:1.23 as W/O emulsion to secondary coating material, 1.21% (w/v) as secondary emulsifier concentration and 30% (w/w) as WPC concentration for spray drying. In conclusion, the microencapsulation of peanut sprout extract under the optimized conditions by RSM ensures the smaller size (3–7 μm) of microcapsules with the highest yield reaching to 98.74%. 相似文献
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茉莉精油微胶囊香气成分的释放研究 总被引:2,自引:0,他引:2
研究了茉莉精油的挥发性、茉莉精油微胶囊的总精油含量及表面含油量,分析了茉莉精油微胶囊总精油及表面含油量在贮存过程中的变化。研究结果表明:微胶囊在贮存过程中,茉莉精油的损失主要是微胶囊表面油的损失,并得出微胶囊对茉莉精油香气成分的保存是十分有效的结论。对各释放结果逐一进行了数学方程拟合,取得了较高的置信度。 相似文献
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微胶囊技术在功能性油脂生产中的应用 总被引:6,自引:0,他引:6
在介绍微胶囊技术基本原理的基础上,分析其在功能性油脂生产中的意义,着重探讨了几种常用的微胶囊壁材和生产技术,总结了功能性油脂微胶囊的研究现状及在食品工业中的应用.功能性油脂微胶囊化不仅可保护其中的功能成分,防止氧化,而且产品有较优的稳定性、流动性,以及较高的生物消化率,因而微胶囊技术在功能性油脂生产中具有广阔的开发和应用前景. 相似文献