纸型酸芥菜的加工工艺

以酸芥菜为原料研究纸型蔬菜的加工工艺、操作要点以及各项理化指标的检测.结果表明,原料经过脱盐,采用高速打浆机粉碎并添加0.4%羧甲基纤维素钠、0.5%海藻酸钠、1.0%可溶性淀粉、0.25%大豆分离蛋白,选择布料作为涂布浆料的介质,在75℃条件下烘烤1.5 h;在其表面刷调味料,其组成为味精1%、白糖2%、麦芽糊精5%、水90%、植物油2%.制品的水分含量为2.3%,水分活度0.41,含盐量3.4%、酸度0.7%、亚硝酸盐1.51 mg/kg.     

浸渍装饰纸用的表面活性剂

前 言历史上人类对表面活性剂的认识首先是通过肥皂,据说大约在公元前100年,罗马人已经开始使用与之类似的东西了。而现代,通常将动物或植物油用氢氧化钠处理,就可得到一种游离丙三醇和脂肪酸钠盐。阴离子表面活性剂常是这种磺酸盐混合物或磷酸盐等。磺酸盐的一个主要性能是产生极多的泡沫,因此他们常被当作起泡剂,比如用来生产泡泡浴液。非离子表面活性剂可用氧化乙烯制得,对含有厌水基的物质来说,氧化乙烯含量越大,水溶性越好。这些表面活性剂既可用做消泡剂又可用做起泡剂,这取决于它的化学成分及亲水基与厌水剂的含量。例如:亲水基的含…     

拥抱跨界时代

生活中大多数的“框框”都是人们的思维定势作祟,当Crossover横空出世,所及之处火花进发时,人们的眼界大开了。Crossover在标榜独立精神的今天,似乎裸露着一种时代体征。     

热空气在管道中的传热计算

对工程中常见的热流体(空气)在管道传输中的换热作了简要的定性和定量分析，提供了适用于工程用途的传热计算的简易数学方法。     

澳洲青苹加工品质的测定

测定了高酸品种澳洲青苹的固形物、有机酸和引起果汁褐变的主要成份——多酚类物质(以绿原酸计)，固形物含量比其他品种苹果的平均含量高1．51个百分点，有机酸含量高于其它苹果0．122个百分点，而绿原酸仅为61．82mg／L，远远低于普通苹果(秦冠)的绿原酸含量258．57mg／L。实验表明，澳洲青苹是目前最适合加工浓缩果汁的品种之一。     

为CGPSS－F仿真运行选择汉字系统

叙述了为ＣＧＰＳＳ－Ｆ选择汉字系统的方法，以便能使ＣＧＰＳＳ－Ｆ仿真系统在内存容量为６４０ＫＢ的微型机上顺利运行。对于内存小的微机使用汉字有一定的参考意义。     

NOTE ON A METHOD FOR THE CALCULATION OF TRUE EXTRACT WITH ALLOWANCE FOR GRAINS VOLUME

The extract of a malt determined by the Standard Method is seriously in error because of the incorrect allowance of 15 ml. as the volume of the grains. However, the results can be accurately corrected by a simple calculation, or by reference to a table.     

三元物系液—液萃取过程的计算机辅助计算

本文从液-液两相级式接触萃取出发,在IBM-PC微机上调试出了用于三元物系液-液萃取过程的设计计算和操作计算的程序。该程序收敛速度快,精度高,可替代工业上传统的绘图求解法和繁琐的逐级计算法,而且对工业萃取的优化设计具有现实意义。     

PEELING OF YAMS FOR PROCESSING

White yam (Dioscorea rotundata) lye or flame peeled were evaluated for quality characteristics and peeling loss in comparison to hand peeling. Lye concentration (15–20% at 98°C with a dipping time 3–5 min) effectively removed the histological peel as the flame method, (flame temperature was 857°C and exposure time was 9 min) with a peeling loss of 4% which was significantly lower than for hand peeling. Fresh yams were more readily peeled by these methods than stored yams. The yams peeled by lye or flame when cooked were quite acceptable as hand peeled yams. The adaptability of these methods for industrial scale up are examined.     

带传动计算的一种新方法

考虑到带传动中传动带所产生的弹性变形,根据传动带中拉力的变化规律和传动带与带轮之间出现的相对滑动,给出了带传动计算的一种新方法.与传统的带传动计算方法相比,该方法能更好地表达带传动中的拉力变化规律     

CONSIDERATIONS OF A GENERAL RHEOLOGICAL MODEL FOR THE MECHANICAL BEHAVIOR OF VISCOELASTIC SOLID FOOD MATERIALS*

A model describing the rheological behavior patterns of solid foods is suggested and discussed. It consists of a parallel array of a generalized Maxwell body in which the Maxwell elements have been modified by incorporation of two fracture elements. The model enables the anticipation of response patterns of real food materials under various force—deformation histories without becoming inconsistent. It also predicts the viscoelastic phenomena of materials after their failure and does not exclude the elastic deformation stage. The effects of experimental conditions, differences between various types of foods, as well as variations and changes in the same food can be expressed or explained in terms of model components and their relative distribution. The application of the model is demonstrated with a small number of representative elements.     

山杏仁蕨菜罐头的工艺技术研究

山杏仁和蕨菜具有较高的营养价值和保健功能，由于二者均为野生植物，无污染，是天然绿色食品，利用野生资源生产罐装山杏仁和蕨菜，食用安全、方便、卫生，市场前景广阔。本文对山杏仁蕨菜罐头加工工艺和技术要点进行了研究和探讨。     

光学透镜模具组衬圈剥离系统

用不研磨精密浇注法加工生产超薄光学透镜是具有世界先进水平的新工艺．介绍了使用该工艺生产光学透镜过程中模具组橡塑衬圈的剥离加工系统———气动式双向自动剥离机的组成、工作原理及其电气控制系统