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
45
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] 【B9】
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
individual
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2817662.html
相关试题推荐
[originaltext]Recentlysomeresearchersconductedaninterestingcasestudy
[originaltext]Recentlysomeresearchersconductedaninterestingcasestudy
[originaltext]Recentlysomeresearchersconductedaninterestingcasestudy
Whydoescreamgobadfasterthanbutter?Someresearchersthinkthatitcom
Whydoescreamgobadfasterthanbutter?Someresearchersthinkthatitcom
Whydoescreamgobadfasterthanbutter?Someresearchersthinkthatitcom
Whydoescreamgobadfasterthanbutter?Someresearchersthinkthatitcom
ResearchersattheLondonSchoolofHygieneandTropicalMedicinepublished
ResearchersattheLondonSchoolofHygieneandTropicalMedicinepublished
ResearcherssayextravitaminEfedtoturkeysappearstohelpcontrolinfec
随机试题
AFewyearsago,Iwasaskedtoanswerthisquestiononaradioprogram,"Wh
Youwillbelate______youleaveimmediately.A、unlessB、untilC、ifD、orA本题考查连词辨析
【S1】[br]【S3】A、independentlyB、synchronicallyC、individuallyD、dependablyA词义辨析
在地震区,下列哪一种砌体结构的承重方案不应选用?( )A.横墙承重 B.纵横
钢结构单层房屋和露天结构横向(沿屋架或构架跨度方向)的温度区段长度值,是根据下列
建筑平面图上凡被剖切到的墙、柱断面轮廓线用()画出。A.细实线 B.中实线
既抗RNA病毒,又抗DNA病毒的广谱抗病毒药物是:A.金刚烷胺 B.阿昔洛韦
前不久在大蒜涨价风潮中,大蒜市场价格已涨到每斤9元左右,面对居高不下的大蒜价格,
在现货金融工具价格一定时,金融期货的理论价格不受()的影响。A:持有时间B:即
一般而言,房地产投资的特点包括()。A.政策风险相对较大 B.价值升值效应
最新回复
(
0
)