首页
登录
职称英语
Imagine eating everything delicious you want—with none of the fat. That woul
Imagine eating everything delicious you want—with none of the fat. That woul
游客
2024-06-10
44
管理
问题
Imagine eating everything delicious you want—with none of the fat. That would be great, wouldn’t it?
New "fake fat" products appeared on store shelves in the United States recently, but not everyone is happy about it. Makers of the products, which contain a compound called olestra, say food manufacturers can now eliminate. Critics, however, say the new compound can rob the body of essential vitamins and nutrients (营养物) and can also cause unpleasant side effects in some people. So it’s up to consumers to decide whether the new fat-free products taste good enough to keep eating.
Chemists discovered olestra in the late 1960s, when they were searching for a fat that could be digested by infants more easily. Instead of finding the desired fat, the researchers created a fat that can’t be digested at all.
Normally, special chemicals in the intestines(肠)"grab" molecules of regular fat and break them down so they can be used by the body. A molecule of regular fat is made up of three molecules of substances called fatting acids.
The fatty acids are absorbed by the intestines and bring with them the essential vitamins A, D, E and K. When fat molecules are present in the intestines with any of those vitamins, the vitamins attach to the molecules and are carried into the bloodstream.
Olestra, which is made from six to eight molecules of fatty acids, is too large for the intestines to absorb. It just slides through the intestines without being broke down. Manufacturers say it’s the ability to slide unchanged through the intestines that makes olestra so valuable as a fat substitute. It provides consumers with the taste of regular at without any bad effects on the body. But critics say olestra can prevent vitamins A, D, E and K from being absorbed. It can also prevent the absorption of carotenoids(类胡萝卜素), compounds that may reduce the risk of cancer, heart disease, etc.
Manufacturers are adding vitamins A, D, E and K as well as carotenoids to their products now. even so, some nutritionists are still concerned that people might eat unlimited amounts of food made with the fat substitute without worrying about how many calories they are consuming. [br] Why are nutritionists concerned about adding vitamins to olestra?
选项
A、It may lead to the over-consumption of vitamins.
B、People may be induced to eat more than is necessary.
C、The function of the intestines may be weakened.
D、It may rigger a new wave of fake food production.
答案
B
解析
该物种的主要缺点在于阻碍各种维生素的吸收,增加维生素就可以诱使更多的食客购买。
转载请注明原文地址:https://tihaiku.com/zcyy/3628236.html
相关试题推荐
Imagineeatingeverythingdeliciousyouwant—withnoneofthefat.Thatwoul
Imagineeatingeverythingdeliciousyouwant—withnoneofthefat.Thatwoul
Inthenameof"zerotolerance,"ourschoolsaretreatinginnocentchildren
[originaltext]W:Why,Peter!Youaresweatingheavily.Wherehaveyoubeen?M:
[originaltext]W:Why,Peter!Youaresweatingheavily.Wherehaveyoubeen?M:
[originaltext]W:Why,Peter!Youaresweatingheavily.Wherehaveyoubeen?M:
Imaginethis:youaresittinginyourcarwhilewatchingamovie,youcanch
Imaginethis:youaresittinginyourcarwhilewatchingamovie,youcanch
Imaginethis:youaresittinginyourcarwhilewatchingamovie,youcanch
Imaginethis:youaresittinginyourcarwhilewatchingamovie,youcanch
随机试题
Theglasswill______ifyoupourboilingwaterintoit.A、splitB、crashC、crack
Thecostofstagingtheyear2000OlympicsinSydneyisestimatedtobeast
[originaltext]LastSunday,hugewavesmovedacrosstileIndianOceanandflo
Self-motivationisbasicallytheabilitytogetyourselftotakeactionwhet
执业药师的最高行为准则是A、维护病患者和公众的健康利益 B、维护自己的经济利益
根据《工程建设项目施工招标投标办法》,下列关于施工招标项目划分标段的说法中,错
胸痛彻背,感寒尤甚,胸闷气短,心悸不适,自汗,肢冷,舌苔薄白,脉沉紧,辨证应属A
新生儿的无条件反射的意义在于()。 (A)适应环境、保护自身生存(B
防爆电气设备的标志包含型式、等级、类别和组别,应设置在设备外部主体部分明显的地方
关于预应力后张法的施工工艺,下列说法正确的是()。A.灌浆孔的间距,对预埋金属
最新回复
(
0
)