首页
登录
职称英语
Centuries ago, man discovered that removing moisture from food helps to pres
Centuries ago, man discovered that removing moisture from food helps to pres
游客
2023-07-27
61
管理
问题
Centuries ago, man discovered that removing moisture from food helps to preserve it, and that the easiest way to do this is to expose the food to sun and wind. In this way the North American Indians produce pemmican (dried meat ground into powder and made into cakes), the Scandinavians make stock fish and the Arabs dried dates (枣) and "apricot leather" (杏干).
Fruit is sun-dried in Asia Minor, Greece, Spain and other Mediterranean countries, and also in California, South Africa and Australia. The methods used vary, but in general, the fruit is spread out on trays in drying yards in the hot sun. In order to prevent darkening, pears, peaches and apricots are exposed to the fumes of burning sulphur (硫磺) before drying. Plums (李子), for making prunes (梅干), and certain varieties of grapes for making raisins (葡萄干) and small dried grape cakes, are dipped in a salt solution in order to crack the skins of the fruit slightly and remove their wax coating, thus increasing the rate of drying.
Nowadays most foods are dried mechanically. The conventional method of such dehydration (脱水) is to put food in chambers through which hot air is blown at temperatures of about 110℃ at entry to about 43℃ at exit. This is the usual method for drying such things as vegetables, cut meat, and fish.
Liquids such as milk, coffee, tea, soups and eggs may be dried by pouring them over a heated horizontal steel roller or by spraying them into a chamber through which a current of hot air passes. In the first case, the dried material is removed off the roller as a thin film which is then broken up into small, though still relatively coarse thin pieces. In the second process it falls to the bottom of the chamber as fine powder. Where recognizable pieces of meat and vegetables are added, as in soup, the ingredients are dried separately and then mixed. [br] What is the common way to dry cabbages today?____________
选项
答案
To put them in hot-air chambers.
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2874290.html
相关试题推荐
Forcenturiesmendreamedofachievingverticalflight.In400A.D.Chinese
Forcenturiesmendreamedofachievingverticalflight.In400A.D.Chinese
Inthelatenineteenthandearlytwentiethcenturies,oneofthemostclearl
Inthelatenineteenthandearlytwentiethcenturies,oneofthemostclearl
Inthelatenineteenthandearlytwentiethcenturies,oneofthemostclearl
Inthelatenineteenthandearlytwentiethcenturies,oneofthemostclearl
Inthelatenineteenthandearlytwentiethcenturies,oneofthemostclearl
Inthelatenineteenthandearlytwentiethcenturies,oneofthemostclearl
Inthelatenineteenthandearlytwentiethcenturies,oneofthemostclearl
Inthelatenineteenthandearlytwentiethcenturies,oneofthemostclearl
随机试题
_____initialrecognitionwhilestillquiteyoung.A、Mostfamousscientistsachiev
Whatdoesthemansaywillbelostwiththedisappearanceofalanguage?[br][
关于出版后记的说法,错误的是( )。A.出版后记是书刊辅文的一种 B.出版后
在进行柱下独立基础的抗冲切承载力验算时,地基的反力值应取( )。A.净反力标准
下列所列公路工程,可以由二级注册建造师(公路工程)担任其项目负责人的是()。A
在我国,封闭式基金的交割与资金交收实行( )制度。A.T+2 B.T+0
图中的文字与哪个历史人物所处时期最为接近? A.武则天 B.王昭君 C.西
某书店向未成年人出售、出租含有诱发未成年人违法犯罪以及渲染暴力、色情、赌博、恐怖
下列各项中,不属于与函证程序相关的舞弊风险迹象的是()。A.从私人电子信箱
根据《中华人民共和国水污染防治法》,关于水污染防治监督管理的说法,正确的是(
最新回复
(
0
)