Tomato powder is much in demand by dehydrated soup manufacturers, and is now produced in many countries where tomatoes are an indigenous outdoor crop. The heavy cropping Italian plum tomato is ideal for drying down to powder, and this is grown in most areas with a 'Mediterranean- type' climate. Tomatoes have a very low solids content-not more than 6 percent- and dehydration must be preceded by evaporating the pulped

The vegetablecultivars quoted in the following process data are, in the main, those bred in temperate climates, the USA and Western Europe and, in the case of pulses, the Antipodes. However, with the growth of dehydration in thedeveloping countries, with tropicalorsubtrop, theseregions, along with Eastern Europe, Egypt and China, who have had a dehydration industry for many years

Air drying of vegetables is still the most widely used method and there are several options open to the dehydrator as to the type of dryer that can be used for this purpose. In the early days of the industry, tunnel and stove dryers were in general use. Designs varied widely but all of them involved the use of shallow trays upon which the material for drying was spread to a depth of 25-40mm. The tray loading and unloading involved a fairly high labour content but

The location of the dehydration factory must be considered very carefully, because, whereas at one time proximity to the source of raw materials was of paramount importance, availability of an adequate labour force and the provision for effluent disposal will, perhaps, constitute a more pressing requirement. A rural environment is obviously better than a location in a highly industrialised area, because the operation involves the utilisation of a considerable amount

第1节污泥的分类、性质与产生量 第2节污泥处理处置基本方法 第3节污泥浓缩 第4节污泥的稳定 第5节污泥的调理 第6节污泥脱水 第7节污泥的干燥与焚烧 第8节污泥的处置与资源化 第9节工程实例

1、掌握取材的定义及注意事项; 2、掌握常用固定液的配制 3、掌握组织检材制片前的处理和准备; 4、掌握组织脱水、透明的过程及注意事项; 5、熟悉切片机的操作;

概述 第一节 食品干藏原理 第二节 食品干制的基本原理 第三节 干制对食品品质的影响 第四节 食品的干制方法 第五节 干制品的包装和贮藏

成岩作用一一自然界的各种松散沉积物变为坚固岩石的作用。 影响成岩作用的因素主要有: 1内因方面:沉积物的原始成分和结构。 2压力、温度、水和水溶液中的物质成分以及微生物和有机 物。 成岩作用主要有:压固脱水作用、胶结作用、重结晶作用、微生 物及有机质的作用

第1节污泥的分类、性质与产生量 第2节污泥处理处置基本方法 第3节污泥浓缩 第4节污泥的稳定 第5节污泥的调理 第6节污泥脱水 第7节污泥的干燥与焚烧 第8节污泥的处置与资源化 第9节工程实例

(一)概述 芦丁( Rutin)广泛存在于植物界中,现已发现含芦丁的植物至少在7种以 上,如烟叶、槐花、荞麦和蒲公英中均含有。尤以槐花米(为植物 Sophora japonica 的未开放的花蕾)和荞麦中含量最髙,可作为大量提取芦丁的原料。芦丁是由斛 皮素( Quercetin)3位上的羟基与芸香糖( Rutinose)〔为葡萄糖( Glucose)与鼠 李糖( Rhamnose)组成的双糖)脱水合成的苷