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
2024-02-28
32
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:https://tihaiku.com/zcyy/3490085.html
相关试题推荐
Becausehedidn’tpayfortherent,_______________________(房东把他从公寓里赶了出去).thela
[originaltext]W:Maybeyoushouldstudycommercialartbecausethat’salittle
[originaltext]W:Maybeyoushouldstudycommercialartbecausethat’salittle
[originaltext]W:Maybeyoushouldstudycommercialartbecausethat’salittle
[originaltext]W:Maybeyoushouldstudycommercialartbecausethat’salittle
Sendingachildtoanurseryatanearlyageisemotionallyharmful,becausethe
Someoldpeople____________(愿意住进养老院)becausetheycanenjoybetterlivingenvir
TVandtheinternetdistanceapersonfromhis/herfriends,becausepeoplenowad
Cultureshockissonamedbecauseoftheeffectithasonpeoplewhentheye
Cultureshockissonamedbecauseoftheeffectithasonpeoplewhentheye
随机试题
PASSAGEFOUR[br]Whatdoesthepassagemainlyfocuson?Theexplanationofeffic
中国国旗(FlagofChina)又被称为“五星红旗”。旗面为红色,象征革命。旗面左上方有五颗黄色五角星,黄色较白色明亮美丽,表示中华民族为黄色人种
中国发展离不开世界,世界繁荣稳定也离不开中国。在处理国际关系和外交关系方面,我国
下列不属于碾压混凝土的是()。A.超贫碾压混凝土 B.高掺和料碾压混凝土
闭路电视传输通道指标中的视频信杂比要求大于()。A.36dB(加权) B.56
使用孕产妇系统保健手册不包括A、从确诊早孕时开始建册 B、系统管理直至产后1
下面()数字是画黄金分割线中最为重要的。 Ⅰ.0.382 Ⅱ.0.618
患者,女性,31岁。行剖腹探查术后,为其配制肠外营养液需注意的问题,以下不正确的
“十四五”规划建议中提出,要提高高等教育质量,分类建设一流大学和一流学科,加快培
水利工程建设监理专业资质等级目前分为三个等级的专业有()。A.水利工程施工监理
最新回复
(
0
)