共查询到20条相似文献,搜索用时 169 毫秒
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比萨干酪工艺及其功能特性分子基础 总被引:1,自引:0,他引:1
阐述了乳中的酪蛋白胶束如何经过生产和成熟逐步形成比萨干酪的微观结构,以及该结构如何影响干酪的功能性如融化性、拉伸性、出油性和起泡性.并应用上述分子理论分析省略热烫拉伸、混合酸化、添加钙等生产实例,说明生产工艺是通过作用于干酪的微观结构而影响其功能特性.本文在力图澄清国内比萨干酪生产中一些疑惑的同时,说明只有从认识干酪的分子基础入手,才可能通过控制工艺条件改善干酪的功能特性或提高生产的经济性. 相似文献
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乳清的发酵特性及澄清发酵乳清饮料的研制 总被引:10,自引:0,他引:10
工业发达的国家十分重视乳清的再利用。我国乳品工业起步较晚,特别是干酪工业更是如此。近年来,随着改革开放的需要,我国的干酪生产也逐渐多了起来,如北京东直门乳品厂生产的Edam干酪,黑龙江长吉岗生产的cheddar干酪和再制干酪,以及1994年投产的包头骑士乳品集团公司,全部设备和技术从APV丹麦D.-W公司引进,设计能力为日处理鲜乳50吨,年产cheddar和Ifollda干酪共1500吨,重制干酪700吨。因此,随着我国干酪产量的不断增加,乳清的开发利用也日显迫切。利用乳清生产饮料,较其它利用方式具有工艺简单、设备投资少、产品消费量大… 相似文献
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本文针对精密机床的传动要求,提出变结构非线性控制方案。仿真结果表明,该方案既具有较强的抗干扰能力和快速跟踪给定速度的性能,又有效地抑制了调速过程中的超调量,对改进数控机床的控制系统具有一定的应用价值。 相似文献
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隆丁区分值又叫蛋白质区分值,是对 .芽蛋白质分解情况进行检查的一个量值.在一定程度上反映了麦芽蛋白溶解度,隆丁区分值对于麦芽干燥过程中凋萎休止阶段的控制和在制麦汁过程中蛋白质体止温度和时间的控制都有一定的指导意义,对啤酒质量也有很大的影响. 相似文献
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涂布机张力控制系统的研制 总被引:2,自引:0,他引:2
从涂布过程要求张力和速度复合稳定可调等实际出发,设计并研制了一套采用多台MCS-8098十六位单片微机控制的涂布机张力控制系统。文中着重介绍了该系统的结构布局,各被控参数的控制回路及工作原理,通用的MCS-8098单片机系统的硬件结构,以及相应的控制软件和抗干扰措施等。 相似文献
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本文介绍了ⅠA—S开放式工业系统的结构特点.控制功能的实现等,结合系统在聚酯生产装置上的应用情况.介绍了Ⅰ/A—S系统典型控制方案如PID控制.梯形逻辑控制.顺序控制等的基本特性及实施.同时还就系统的开发和控制方案优化等做了概括介 相似文献
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D Stamm 《Zeitschrift für Lebensmittel-Untersuchung und -Forschung》1986,182(5):372-384
The introduction of statistical quality control of clinical chemical analyses has not only provided documentation of the reliability of analytical results and led to improvements in reliability, it has also led to marked improvements in the methods, reagents, calibration materials, control specimens and equipment used. Beyond this, the availability of reliable analytical results has enabled further development of the theoretical concepts underlying thought and action in clinical chemistry. The present paper provides an overview of developments in quality control in the Federal Republic of Germany since 1964. The uniform basic program for quality control with control specimens, as set forth in the Guidelines of the Medical Society of West Germany and required in all states of the country since 1971, is described and our experience with it discussed. Internal quality control consists of separate precision control and accuracy control procedures. External quality control in the form of short-term interlaboratory surveys with control specimens provides an objective check on accuracy. The assigned values for the required accuracy control specimens are determined under routine conditions in particularly well-equipped and well-staffed laboratories headed by particularly highly qualified individuals. The laboratories are independent of the manufacturers of control specimens, calibration materials, reagents and equipment. Over the years, the assigned value determinations have also provided valuable information about the structure of the data and about the reliability criteria for the analytical results. Based on the experience gained with this system, a new concept for quality control was developed in which the method-dependent assigned values are replaced by method-independent reference method values. The requirements for quality control, i.e., the maximum acceptable imprecision and the maximum acceptable deviation of the analytical results from the reference method value or the assigned value, are specified after consideration of the clinical requirements, that is, their effects on medical decision-making. 相似文献
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如何及时有效地进行质量分析和控制是企业的一项举足轻重的工作。本文根据数理统计原理、质量控制学和计算机技术等开发了卷烟生产过程的计算机辅助质量管理系统。使用效果表明,本系统具有先进性、适用性和拓展功能。 相似文献