首页
登录
职称英语
Food which is kept too long decays because it is attacked by yeasts (酵母菌), m
Food which is kept too long decays because it is attacked by yeasts (酵母菌), m
游客
2023-07-27
77
管理
问题
Food which is kept too long decays because it is attacked by yeasts (酵母菌), moulds (霉) and bacteria (细菌). The canning process, however, seals the product in a container so that no infection can reach it, and then it is sterilized (消毒) by heat. Heat sterilization destroys all infectious present in food inside the can. No chemical preservatives are necessary, and properly canned food does not deteriorate during storage.
Today vegetables, fish, fruit, meat and beer are canned in enormous quantifies. Foods that were previously seasonal may now be eaten at any time, and strange foods are available far from the countries where they are grown. The profitable crops many farmers now produce often depend on the proximity (邻近) of a canning factory.
The first stage in the canning process is the preparation of the raw food. Diseased and waste portions are thrown away; meat and fish are cleaned and trimmed; fruit and vegetables washed and graded for size. The jobs are principally done by machine
The next stage, for vegetables only, is blanching. This is immersion (浸洗) in very hot or boiling water for a short time to remove air and soften the vegetable. This makes it easier to pack into cans for sterilization. Some packing machines fill up to 400 cans a minute. Fruit, fish and meat are packed mw and cold into cans, and then all the air is removed. When the cans are sealed, the pressure inside each can is only about half the pressure of the outside air. This is "vacuum" packing.
During the sterilization process which follows, the cans are subjected to steam or boiling water, with the temperature and duration varying according to the type of food. Cans of fruit, for example, take only 5-10 minutes in boiling water, while meat and fish are cooked at higher temperature for longer periods. After sterilization, the cans are cooled quickly to 32℃, to prevent the contents from becoming too soft.
The final stage before dispatch to the wholesale or retail grocer is labeling, and packing the tins into boxes. Nowadays, however, labeling is often printed on in advance by the can maker and no paper labels are then required. [br] Food canning technology makes it possible to______.
选项
A、increase the amount of food products.
B、make food more delicious
C、eat previously seasonal food at any time
D、grow strange plants
答案
C
解析
本题需查读第二段。罐装食品技术使本来是季节性的食物在任何时候都能吃到,并非能增加食物的产量,使食物更好吃,或种植奇特的植物。
转载请注明原文地址:http://tihaiku.com/zcyy/2873825.html
相关试题推荐
[originaltext]W:Maybeyoushouldstudycommercialartbecausethat’salittle
[originaltext]W:Maybeyoushouldstudycommercialartbecausethat’salittle
[originaltext]W:Maybeyoushouldstudycommercialartbecausethat’salittle
Someoldpeople____________(愿意住进养老院)becausetheycanenjoybetterlivingenvir
Cultureshockissonamedbecauseoftheeffectithasonpeoplewhentheye
Cultureshockissonamedbecauseoftheeffectithasonpeoplewhentheye
Cultureshockissonamedbecauseoftheeffectithasonpeoplewhentheye
Theresultswere____________(无可争议的)becausetheyhadbeenrepeatedinlaborato
Cathyturneddownthewell-paidjobbecause______(要求经常出差).itinvolvedtoomany
Foodwhichiskepttoolongdecaysbecauseitisattackedbyyeasts(酵母菌),m
随机试题
TeachingMethodsforEffectiveCommunicationI.Writeimportantpointson【T1】_
(catch)________cheatingbytheteacherinamathexam,Davidscoredzerointh
患儿男,9岁。以“要求修复牙床裂开”入院。曾行“左侧完全性唇裂修复术”、“左侧完
芳芳在考试的时候,一般都是把难题放一边,先把容易的做完,这种学习策略属于()
按照流通与否,国债可分为( ) Ⅰ.长期国债 Ⅱ.流通国债 Ⅲ.非流通国
产业结构的基本内容包括( )。A:产业的分类 B:产业构成 C:产业发展水
根据合同法,下列合同中,属于有效合同的是()。A.损害社会公共利益的合同 B
请根据故事《小树叶找快乐》设计一个中班健康活动,要求写出活动目标、活动准备以及活
金融期权与金融期货的基础资产相同。()
根据《水利水电工程标准施工招标文件》,发包人的一般义务和责任包括()等。A
最新回复
(
0
)