猪肉为什么一定要熟透才可以食用?牛排为什么就可以按几成熟不等食用?
推荐回答(3个)
带着血丝的不熟猪肉和牛肉,易引发猪带绦虫、牛带绦虫病。
牛排不熟只能说是一种饮食的误区,就象有许多人热中吃一些高危险的食物一样(比如容易生肝炎的那东西)。老外现在也开始正视这个问题了:
中新网香港3月18日消息:伦敦讯,英国的一些餐馆正迫使喜欢吃半生熟牛肉的顾客在用餐之前,先签一份放弃起诉权的表格,因为餐馆担心顾客吃了半生熟牛肉之后有中毒的危险。
据《泰晤士报星期刊》的报道,一些餐馆已决定,只有在顾客签下放弃起诉权表格之后,它们才会为顾客提供半生熟的汉堡包牛肉、香肠或牛肉丝。
报道指出,喜欢吃半生熟牛肉丝的人,中毒的可能性更大。
由于当局规定,给顾客吃的牛肉丝必须煮熟,才迫使餐馆采取这项新措施。
本报讯法国专家对最近几次沙门氏菌引起急性传染病进行的研究发现,半生不熟的牛肉糜是这几次疫情的罪魁祸首,并建议人们改变爱吃不熟牛肉的习惯。
这项研究结果刊登在法国卫生部最新一期流行病学研究通报上。研究人员在文章中指出,多项研究表明:未煮熟的牛肉糜可以传播沙门氏菌,而食用这类食品很有可能导致人体食物中毒等由沙门氏菌引起的疾病。他们希望政府有关部门能够通过各种途径向消费者普及食品卫生方面的知识,特别是提醒人们要认真加工烹调肉类食品,以防病从口入。
沙门氏菌属革兰氏阴性肠道杆菌,目前发现的有近2000种,其中大多数菌种能引起家畜、鼠类和禽类等动物发病,少数菌种能导致人类罹患伤寒、败血症等疾病。此外,人吃了带这种病菌的食品还可出现严重的食物中毒。
牛带绦虫是世界性分布,在多吃牛肉,尤其是有吃生的或不熟牛肉习惯的地区和民族中形成流行,一般地区仅有散在的感染。我国20多个省都有散在分布的牛带绦虫病人,但在若干少数民族农牧区如新疆、内蒙古、西藏、云南、宁夏、四川的藏族地区、广西的苗族地区、贵州的苗族、侗族地区,以及台湾的雅美族和泰雅族地区有地方性的流行。感染率高的可达到70%以上,患者多为青壮年人,一般男性稍多于女性。
造成牛带绦虫病地方性流行的主要因素是病人和带虫者粪便污染牧草和水源以及居民食用牛肉的方法不当。
在上述流行区里牛的放牧很普遍。而当地农牧民常在牧场及野外排便,致使人粪便污染牧场、水源和地面。牛带绦虫卵在外界可存活8周或更久,因此牛很容易吃到虫卵或孕节而受感染。广西贵州的侗族人畜共居一楼,人住楼上,楼下即是牛圈,人粪便直接从楼上排入牛圈内,使牛受染机会更多。这些地方牛的囊尾蚴感染率可高达40%。当地少数民族又有吃生的或不熟牛肉的习惯。如苗族、侗族人喜欢吃“红肉”、“腌肉”,傣族人喜欢吃“剁生”等,都是将生牛肉切碎后稍加佐料即食;藏族人豆将牛肉稍风干即生食,或在篝火上烤食未烤熟的大块牛肉。这些食肉习惯都容易造成人群的感染。非流行地区无吃生肉的习惯,但偶尔因牛肉未煮熟或使用过生牛肉的刀、砧板切生食菜时污染了牛囊尾蚴而引起感染。
猪肉一是生吃味不好,不容易消化.再就是猪肉容易生猪肉绦虫
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