首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Barbecuing meat gives it great flavor. This taste, though, comes at a price, since the process creates molecules called polycycl
Barbecuing meat gives it great flavor. This taste, though, comes at a price, since the process creates molecules called polycycl
admin
2022-05-13
75
问题
Barbecuing meat gives it great flavor. This taste, though, comes at a price, since the process creates molecules called polycyclic aromatic hydrocarbons (PAHs) which damage DNA and thus increase the eater’s chances of developing cancer. For those who think barbecues one of summer’s great delights, that is a shame. But a group of researchers led by Isabel Ferreira of the University of Porto, in Portugal, think they have found a way around the problem. When barbecuing meat, they suggest, you should add beer.
This welcome advice was the result of some serious experiments, as Dr Ferreira explains in a paper in the Journal of Agricultural and Food Chemistry. The PAHs created by barbecuing form from molecules called free radicals which, in turn, form from fat and protein in the intense heat of this type of cooking. One way of stopping PAH-formation, then, might be to use chemicals called antioxidants that clear away free radicals. And beer is rich in these, in the shape of melanoidins, which form when barley is roasted. So Dr Ferreira and her colleagues prepared some beer marinades, bought some steaks and headed for the pan.
One of their marinades was based on Pilsner, a pale beer. A second was based on a black beer. Since black beers have more melanoidins than light beers—as the name suggests, they give it color—Dr Ferreira’s hypothesis was that steaks immersed in the black-beer marinade would form fewer PAHs than those immersed in the light-beer marinade, which would, in turn, form fewer than steaks left unmarinated.
And so it proved. When cooked, unmarinated steaks had an average of 21 nanograms of PAHs per gram of barbecued meat. Those marinated in Pilsner averaged 18 nanograms. Those marinated in black beer averaged only 10 nanograms. Tasty and healthy too, then. Just what the doctor ordered.
An appropriate title for this text may be ________.
选项
A、Taste and Health; Which One Do You Choose?
B、Barbecue and Beer; Tasty and Healthy
C、Beer; A Welcome and Healthy Drink
D、Barbecued Meat; Delicious but Fatal
答案
B
解析
主旨题。本文首段指出:烧烤有害,但是费雷拉博士建议,烧烤时应该加点啤酒;第二段描述该建议的原理;第三段描述费雷拉博士的实验;第四段通过实验结果和数据证明:烧烤加点啤酒可以美味和健康兼得。故本题答案为B项。
转载请注明原文地址:https://kaotiyun.com/show/yXi4777K
0
考研英语二
相关试题推荐
Thesentence"Aftereachrainshower,anotherInternetmillionairesprangup"(Paragraph1)means______.Whatisspecialabout
Thesentence"Aftereachrainshower,anotherInternetmillionairesprangup"(Paragraph1)means______.Whatcanbeinferred
ThewriterwarnsAmericansthat______.Thewritergivestheexampleofbreadtoshowthat______.
Excitement,fatigue,andanxietycanallbedetectedfromsomeone’sblinks,accordingtopsychologistJohnStern(21)Washington
Officejobsareamongthepositionshardesthitbycompumation.Wordprocessorsandtypistswillloseabout93,000jobsoverthe
Mosthumanbeingsactuallydecidebeforetheythink.Whenanyhumanbeing—executive,specializedexpert,orpersoninthestreet
Workingatnonstandardtimes—evenings,nights,orweekends—istakingitstollonAmericanfamilies.One-fifthofallemployedAm
Whowouldhavethoughtthat,globally,theITindustryproducesaboutthesamevolumesofgreenhousegasesastheworld’sairlin
TheInternetaffordsanonymitytoitsusers,ablessingtoprivacyandfreedomofspeech.Butthatveryanonymityisalsobehind
WilltheEuropeanUnionmakeit?Thequestionwouldhavesoundedstrangenotlongago.Noweventheproject’sgreatestcheerlead
随机试题
与麻醉药的强度有关,而不影响麻醉药吸收的因素为
关于乳牙牙龈瘘道的描述,以下正确的是
空调设备的自动监控系统中常用的温度传感器有()等类型。
甲、乙因买卖货物发生合同纠纷,甲向人民法院提起诉讼。开庭审理时,乙提出双方已经签订了仲裁协议,应通过仲裁方式解决。根据《仲裁法》的规定,对该案件的下列处理方式中,正确的是()。
应收票据在贴现时,其贴现息应该计入()。
如图7,该学生设计作业属于()。
________是指教师按照其特定的社会地位承担相应的社会角色,并表现出符合社会期望的行为模式。
不管是白天的煤炭还是晚上的煤炭,小明都感觉一样黑。这体现了知觉的()
我市提供了500套住房保障名额给外来务工者,符合资格都可以申请,结果只有100人报名,你认为原因是什么。如何解决?
Theword"open"isreallyusedalot.You’veprobablyheard"openup"inmanywaysovertheyears.Probablymostpeoplewouldli
最新回复
(
0
)