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为获得高效的酒类酒球菌制剂,本文研究了真空冷冻干燥,喷雾干燥和常温真空干燥3种不同干燥方法对酒类酒球菌制剂活菌数的影响。本实验通过均匀试验设计,对蔗糖、异维C钠、甘油、脱脂奶粉4种保护剂的冷冻干燥复合保护效果进行评价,确定适合酒类酒球菌的最佳冷冻干燥保护剂配方。分别采用真空冷冻干燥,喷雾干燥和常温真空干燥的方式对酒类酒球菌制剂进行干操处理,采用ATB固体培养基倾倒平板计数法测定菌粉制剂的活菌数。 相似文献
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膜法提取大豆分离蛋白的研究 总被引:9,自引:0,他引:9
选用中空纤维聚砜膜提取大豆蛋白质。对膜分离过程的最优工艺条件进行了探讨,重点对膜污染规律进行了摸索。并通过对膜污染规律的动力分析,获得了克服生产过程中的膜污染的方法,通过工业化生产试验,取得较好的工艺效果和产品。 相似文献
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《Membrane Technology》1991,1991(9):7-8
A novel separation technology - electrostatic pseudo liquid membrane (ESPLIM) separation - has been developed at the Institute of Atomic Energy, Beijing. It has evolved from a combination of solvent extraction, liquid membrane and electrostatic techniques, and can be used to separate, purify and concentrate specific solutes from aqueous solutions. One application is the recovery of cobalt from solution, which is the subject of current research. 相似文献
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ZHONG Zhen-mao CHEN Jin ZHONG Ping State Key Laboratory of Vibration Shock & Noise Shanghai Jiaotong University Shanghai P. R. China 《国际设备工程与管理》2001,6(1)
1 Introduction:While a machine is running, it will create vibration, and also strong noise. Commonly, when the vibration is more intense, the noise is greater. Just like the vibration signals, the sound signals of the machinery contain affluent facility status information, so the sound signals can also be used in the machinery fault diagnosis. We call the technology the sound fault diagnosis which uses the sound signals in fault diagnosis. Even more, using the sound signal in fault diagnosis… 相似文献
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膜分离技术在染料行业中的应用 总被引:14,自引:2,他引:12
介绍了近年来膜分离技术在染料行业中的应用现状 ,在生产方面 ,膜分离技术作为清洁生产工艺取代传统的生产工艺已实际可行 ,在废水治理方面 ,用膜法处理染料废水尚处在研究应用阶段 相似文献
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A novel chromatographic separation method is introduced which employs water (saturated with CO(2)) as a stationary phase and CO(2) (saturated with water) as a mobile phase. Since water and CO(2) have little miscibility, conditions can be attained that create a stationary phase of water lining the inside of an uncoated stainless steel capillary. Because altering temperature and pressure can change both the density of the mobile phase and the polarity of the stationary phase, these experimental parameters offer good flexibility for optimizing separations and allow for different gradient programmed separation options. Further, since this method is free of organic stationary and mobile phase components, it is environmentally compatible and allows the use of universal flame ionization detection. This system offers very good sample capacity, peak symmetry, and retention time reproducibility (~1% RSD run-to-run, ~4% RSD day-to-day). Analytes such as alcohols, carboxylic acids, phenols, and tocopherols are employed to investigate this relatively inexpensive and robust method. As an application, the system is used to quantify ethanol in alcoholic beverages and biofuel and to analyze caffeine levels in drinks. In all cases, quantitative results are obtained with quick throughput times and often little need for sample preparation. 相似文献