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
62
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:http://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
Accordingtothepassage,thetaskofeducationisfairlycomplicatedbecause__
[originaltext]M:Look,it’sfulloftraffichere.(6)Isthistheshoppingdistr
[originaltext]M:Congratulations.YoucertainlydidquitewellandImustsayy
[originaltext]M:Ms.Bertini,youweretheexecutivedirectoroftheWorldFood
论述高校思想政治教育的内容。
下列关于宫缩乏力导致产后流血的特征描述正确的为A.胎儿娩出后阴道较多流血 B.
现代教育制度的核心部分是学校教育制度。()
根据下列材料,按要求完成任务。材料一《普通高中化学课程标准(实验)》关于氧化还原
常见的战术性投资策略包括()。 Ⅰ.交易型策略Ⅱ.多一空组合策略Ⅲ.事件驱
最新回复
(
0
)