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
2023-07-08
33
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] 【B5】
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)compart-ments 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
solution
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2817658.html
相关试题推荐
ArecentstudybyresearchersattheUniversityofMarylandpredictedapers
Justwhenyouhadfiguredouthowtomanagefatinyourdiet,researchersar
Justwhenyouhadfiguredouthowtomanagefatinyourdiet,researchersar
Justwhenyouhadfiguredouthowtomanagefatinyourdiet,researchersar
Justwhenyouhadfiguredouthowtomanagefatinyourdiet,researchersar
Justwhenyouhadfiguredouthowtomanagefatinyourdiet,researchersar
Justwhenyouhadfiguredouthowtomanagefatinyourdiet,researchersar
[originaltext]Intheearly1950s,researchersfoundthatpeoplescoredlowe
[originaltext]Intheearly1950s,researchersfoundthatpeoplescoredlowe
Sometimesthebiggestfindsarethesmallestfinds.Researchersexamininga(
随机试题
Marsisnot,itseems,thedryoldplanetweoncebelievedittobe.Astronau
Twotypesoftestsarecommonlyusedinmodernschools.Thefirst【C1】______isso
2009年4月4日,河南南阳某综合楼工地发生了一起因违章作业物体打击而造成的重伤
A.AB.BC.CD.D
A.刷去毛B.烫去毛C.挖去毛D.撞去毛E.燎去毛香附应()。
泡沫喷雾灭火系统泡沫液液位不正常或无法观测,属于()缺陷,泡沫液过期或无
()提出了“生活教育论”,其核心是()。
在一起聚众斗殴案件发生时,证人甲乙丙丁四人在现场目睹事实经过,侦查人员对上述四名
某项目投资内部收益率高于采用的基准收益率,关于该项目敏感性分析指标的说法,正确的
下列关于施工总承包管理方的说法中,不正确的是()。A.施工总承包管理方主要进行施
最新回复
(
0
)