首页
登录
职称英语
Why does cream go bad faster than butter? Some researchers think that it com
Why does cream go bad faster than butter? Some researchers think that it com
游客
2024-02-05
70
管理
问题
Why does cream go bad faster than butter? Some researchers think that it comes down to the structure of the food, not its chemical composition — a finding that could help rid some processed foods of chemical preservatives.
Cream and butter contain much【B1】______. so why cream should sour much faster has been a【B2】______.
Both are emulsions — tiny globules of one liquid evenly【B3】______throughout another. The difference lies in what’s in the globules and what’s in the surrounding. In cream, fatty globules【B4】______in a sea of water. In butter, globules of a watery【B5】______are locked away in a sea of fat. The bacteria which make the food go bad prefer to live in the watery regions of the【B6】______. This means that in cream, the bacteria are free to grow throughout the mixture. When the situation is【B7】______. the bacteria are locked away in【B8】______buried deep in the sea of fat. Trapped in this way,【B9】______colonies cannot spread and rapidly run out of nutrients. They also slowly poison themselves with their waste products.
In butter, there is a self-limiting system which stops the bacteria growing. The researchers are
already working with food companies keen to see if their products can be made【B10】______bacterial attack through alterations to the food’s structure. They believe that it will be possible to make the emulsions used in salad cream, for instance, more like that in butter. The key will be to do this while keeping the salad cream liquid and not turning it into a solid lump. [br] 【B3】
Why does cream go bad faster than butter? Some researchers think that it comes down to the structure of the food, not its chemical composition — a finding that could help rid some processed foods of chemical preservatives.
Cream and butter contain much(26)the same substances, so why cream should sour much faster has been a(27)mystery. Both are emulsions — tiny globules of one liquid evenly(28)distributed throughout another. The difference lies in what’s in the globules and what’s in the surrounding. In cream, fatty globules(29)drift about in a sea of water. In butter, globules of a watery(30)solution are locked away in a sea of fat. The bacteria which make the food go bad prefer to live in the watery regions of the(31)mixture. This means that in cream, the bacteria are free to grow throughout the mixture. When the situation is(32)reversed, the bacteria are locked away in(33)compartments buried deep in the sea of fat. Trapped in this way,(34)individual colonies cannot spread and rapidly run out of nutrients. They also slowly poison themselves with their waste products.
In butter, there is a self-limiting system which stops the bacteria growing. The researchers are already working with food companies keen to see if their products can be made(35)resistant to bacterial attack through alterations to the food’s structure. They believe that it will be possible to make the emulsions used in salad cream, for instance, more like that in butter. The key will be to do this while keeping the salad cream liquid and not turning it into a solid lump.
选项
答案
distributed
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3423180.html
相关试题推荐
ResearchersattheLondonSchoolofHygieneandTropicalMedicinepublished
ResearchersattheLondonSchoolofHygieneandTropicalMedicinepublished
ResearcherssayextravitaminEfedtoturkeysappearstohelpcontrolinfec
ResearcherssayextravitaminEfedtoturkeysappearstohelpcontrolinfec
ResearcherssayextravitaminEfedtoturkeysappearstohelpcontrolinfec
ResearcherssayextravitaminEfedtoturkeysappearstohelpcontrolinfec
ResearcherssayextravitaminEfedtoturkeysappearstohelpcontrolinfec
ResearcherssayextravitaminEfedtoturkeysappearstohelpcontrolinfec
Whydoescreamgobadfasterthanbutter?Someresearchersthinkthatitcom
Whydoescreamgobadfasterthanbutter?Someresearchersthinkthatitcom
随机试题
EarlierthisyearImetwithagroupofwomeninMatela,asmallfarmingvil
WhichofthefollowingdoesNOTdescribepeople’sunderstandingofuniverseand
Oneofthemostcommonhumanfearsisscarcity.Manypeopleareafraidofno
Inhisrecentlywrittenautobiography,he______(把自己的成功归功于父母的鼓励).owes/attributes
Forthispart,youareallowed30minutestowriteashortessayentitledTheIm
已知图为刚架在荷载作用下的弯矩图,各柱顶的水平线位移ΔH之值为( )。
舌痿软而淡白无华可见于A、气血虚衰 B、风痰阻络 C、肝肾阴亏 D、热极伤
肉桂药材的断面特征是A:红棕色,纤维性强B:外侧呈棕色而粗糙,内侧红棕色而油润
近年来,互联网飞速发展,极大地改变了人们的思维方式和生活习惯。而一些新的通讯传媒
某双代号网络图如下图所示,存在的错误是()。 A.出现无箭头连线 B.出现
最新回复
(
0
)