转基因食品安全性论文范文英文版
转基因食品安全性论文范文英文版
转基因生物和转基因食品都不安全性,远离转基因食品。
2Food security under threat: global response needed Climate change and commodity speculation are among the main factors threatening food security inside and outside the EU, according to a European Parliament resolution adopted on T MEPs call for urgent measures to combat food price manipulation and ensure that food production is maintained in the EU Droughts, floods, fires and storms, on a greater scale than in the past, are reducing agricultural capacity all over the world, says the Soil and water management must be improved to prevent loss of farmland, and the Commission should monitor national climate change mitigation measures, believe MEP Tackling speculationMEPs criticise speculation in food commodities, agricultural raw materials and energy markets, all of which puts food security at The G20 is urged to work for the convergence of market regulations by involving countries that are not part of the G20 in the fight against food price Parliament asks the Commission to consider giving the new European Security and Markets Authority more power to prevent abuses in commodity Dealing in food commodities should be limited to investors who have a genuine link with agricultural markets, MEPs In addition, MEPs call on national governments not to impose curbs on exports, as these "provoke greater uncertainty in the markets and disrupt world markets, and therefore have the potential to drive prices up further at global level" Helping EU farmersTo guarantee food security in the EU, a strong Common Agricultural Policy is needed, says the Declining farm incomes, caused by higher production costs to meet health, environmental and animal welfare standards, need to be urgently addressed to ensure there are farmers in the EU in the Market intervention tools, such as intervention and strategic stocks, must be part of the policy, says PSupport for farmers in developing countriesSince agriculture is a key economic sector in the developing world, MEPs call for a larger proportion of the financial aid for this sector to be used to support more effective and sustainable farming They add that land ownership should be promoted to reduce poverty and increase food The resolution was approved by show of 3New threat to global food security as phosphate supplies become increasingly scarceA new report from the Soil Association reveals that supplies of phosphate rock are running out faster than previously thought and that declining supplies and higher prices of phosphate are a new threat to global food ‘A rock and a hard place: Peak phosphorus and the threat to our food security’ highlights the urgent need for farming to become less reliant on phosphate rock-based [1]Intensive agriculture is totally dependent on phosphate for the fertility needed to grow crops and Worldwide 158 million tonnes of phosphate rock is mined every year, but the supply is Recent analysis suggests that we may hit ‘peak’ phosphate as early as 2033, after which supplies will become increasingly scarce and more [2]This critical issue is missing from the global policy agenda - we are completely unprepared to deal with the shortages in phosphorus inputs, the drop in production and the hike in food prices that will Without fertilisation from phosphorus it has been estimated that wheat yields could more then halve in coming decades, falling from nine tonnes a hectare to four tonnes a The current price of phosphate rock is approximately twice that of When demand for phosphate fertiliser outstripped supply in 2007/08, the price of rock phosphate rose 800%In Europe we are dependent on imports of rock phosphate, having no deposits of our own, but the geographical concentration of reserves adds further uncertainty to the future security of our In 2009, 158 million metric tonnes of phosphaterock was mined 67% of this resource was mined in just three countries - China (35%), the USA (17%) and Morocco and Western Sahara (15%) China has now restricted, and the USA has stopped, exports of [3]Author of the report, D Isobel Tomlinson, said: "A radical rethink of how we farm, what we eat and how we deal with human excreta, so that adequate phosphorus levels can be maintained without reliance on mined phosphate, is crucial for ensuring our future food "‘A rock and a hard place’ sets out the actions needed to close the loop on the phosphorus These include:Changing how we farmDifferent farming systems vary enormously in their reliance on mined Organic farms are more resilient to the coming phosphorus rock ‘shock’, as it can only be used as a supplement to nutrient recycling (including crop rotations, green manures, and composting), and not as a Organic crops generally have a lower fertiliser requirement than non-organic crops, with a greater capacity to scavenge for nutrients through denser and deeper root Changing what we eatEating less meat can reduce the demand for mined This is because vegetable-based production is more efficient in its use of phosphorus then livestock Although different types of meat have different levels of mined phosphate demand depending on the farming system used to produce Meat from livestock grazed on grassland that has not been fertilised with artificial fertilisers, will perform much better than meat from livestock grazed on fields that have been, or livestock fed on grain grown using artificial Changing how we deal with human exretaThe report recommends a radical change in the way we treat human exreta and the need to abandon our current ‘flush-and-forget’ toilet systems in favour of Ecological S The report also calls for a change to EU organic regulations to allow the use of human sewage – rich in ‘natural’ phosphate - on agricultural land to ensure phosphate levels are Globally only 10% of human waste is returned to agricultural Urine alone contains more than 50% of the phosphorus excreted by
这就是关于转基因食品优缺点的作文:Genetically modified food is science brings us the product, now of cultivated land area of less, genetically modified food will play more and more important role, if the use of transgenic technology can solve the world food shortage problem, it is not quite good? Genetically modified food in the world now is a kind of new things, new things, people need time to promote its accept also need some time, we cannot put new things in the cradle, a stick to it from the beginning, that cannot be eaten of genetically modified You think we don't of hybrid rice is a genetically modified food? But we can open it from? And if they can pass the soybeans genetically modified technique using atmospheric nitrogen inside his produces fertilizers to other crops gene transfer in the mankind, it Everything is both sides, especially technology, science and technology is a double-edged sword? Genetically modified food has its disadvantages, like some worry, because it will not change, will destroy genetic evolution, Genetically modified food and nutrition inside it isn't like that, the propaganda of people worry is understandable, after accepting a new things take But we also should see the benefits of them, I think as time slowly past, genetically modified foods will be accepted by 希望会对你有帮助吧,谢谢!
Hello,every This critical issue is missing from the global policy agenda - we are completely unprepared to deal with the shortages in phosphorus inputs, the drop in production and the hike in food prices that will Without fertilisation from phosphorus it has been estimated that wheat yields could more then halve in coming decades, falling from nine tonnes a hectare to four tonnes a The current price of phosphate rock is approximately twice that of When demand for phosphate fertiliser outstripped supply in 2007/08, the price of rock phosphate rose 800%In Europe we are dependent on imports of rock phosphate, having no deposits of our own, but the geographical concentration of reserves adds further uncertainty to the future security of our In 2009, 158 million metric tonnes of phosphaterock was mined 67% of this resource was mined in just three countries - China (35%), the USA (17%) and Morocco and Western Sahara (15%) China has now restricted, and the USA has stopped, exports of [3]Author of the report, D Isobel Tomlinson, said: "A radical rethink of how we farm, what we eat and how we deal with human excreta, so that adequate phosphorus levels can be maintained without reliance on mined phosphate, is crucial for ensuring our future food "‘A rock and a hard place’ sets out the actions needed to close the loop on the phosphorus These include:Changing how we farmDifferent farming systems vary enormously in their reliance on mined Organic farms are more resilient to the coming phosphorus rock ‘shock’, as it can only be used as a supplement to nutrient recycling (including crop rotations, green manures, and composting), and not as a Organic crops generally have a lower fertiliser requirement than non-organic crops, with a greater capacity to scavenge for nutrients through denser and deeper root Changing what we eatEating less meat can reduce the demand for mined This is because vegetable-based production is more efficient in its use of phosphorus then livestock Although different types of meat have different levels of mined phosphate demand depending on the farming system used to produce Meat from livestock grazed on grassland that has not been fertilised with artificial fertilisers, will perform much better than meat from livestock grazed on fields that have been, or livestock fed on grain grown using artificial Changing how we deal with human exretaThe report recommends a radical change in the way we treat human exreta and the need to abandon our current ‘flush-and-forget’ toilet systems in favour of Ecological S The report also calls for a change to EU organic regulations to allow the use of human sewage – rich in ‘natural’ phosphate - on agricultural land to ensure phosphate levels are Globally only 10% of human waste is returned to agricultural Urine alone contains more than 50% of the phosphorus excreted by
转基因与转基因食品安全性论文
转基因黑点很多:基因转移本就在自然界广泛存在,而人类加速了这个过程,人类妄图充当上帝,应该烧死这些科学家。导致杀虫剂用量增加(抗性的选择和转运到可相容的其它植物中)。产生新的农田杂草(基因流和杂交)。转基因植物自身变为杂草(插入性状的竞争)伦理问题。万一有人操纵人类胚胎和转入病毒。产生新的病毒(不同病毒基因组和转基因作物的病毒外壳蛋白的重组)产生新的作物害虫。破坏生态链。对非目标生物的伤害(食草动物的误食)。不可控因素太多。毕竟“life finds its way“
转基因食品(Genetically Modified Food)是指利用转基因生物技术直接获得的转基因生物或者以转基因生物为原料加工生产的食品。 其根据来源不同可分为植物性转基因食品、动物性转基因食品和微生物性转基因食品。转基因食品具有产量高、成本低、抗病虫害等优势,但也存在潜在的安全性问题。优点转基因食品有较多的优点:可增加作物产量;可以降低生产成本;可增强作物抗虫害、抗病毒等的能力;提高农产品耐贮性。例如:转基因食品——土豆;缩短作物开发的时间;摆脱四季供应;打破物种界限,不断培植新物种,生产出有利于人类健康的食品。缺点转基因食品也有缺点:所谓的增产是不受环境影响的情况下得出的,如果遇到雨雪的自然灾害,也有可能减产更厉害。同时在栽培过程中,转基因作物可能演变为农田杂草;可能通过基因漂流影响其他物种;转基因食品可能会引起过敏等
转基因的食品的利与弊就是转基因的食品吧,你可能本身他可能就是更好一些,看着更好,更方便,然后还有一些优势比如你像玉米这些转基因的玉米,可能就是缩水,早等等各种问题,但是b呢就是。转基因的食品可能会对人体造成伤害
转基因食品的六大安全隐患:潜在的致敏性;天然毒素的变化;营养成分的改变;对抗生素的抵抗;对肠道微环境的影响;对环境的威胁。
转基因食品安全性论文范文
转基因食品的安全性 随着转基因食品的商品化生产,转基因食品的安全性越来越受到关注。传统的毒理学的食品安全评价方法已不能完全适用 于转基因技术食品。对于转基因食品的安全性,目前国际上没有统一说法,争论的重点应在转基因食物是否会产生毒素、是否可通过DNA蛋白质过敏反应、是否影响抗生素耐性等方面。 1 转基因食品安全性下的优越点 事物都具两面性,转基因食品同样具备着优点:可增加作物单位面积产量;可以降低生产成本;通过转基因技术可增强作物抗虫害、抗病毒等的能力;提高农产品的耐贮性,延长保鲜期,满足人民生活水平日益提高的需求;可使农作物开发的时间大为缩短;可以摆脱季节、气候的影响,四季低成本供应;打破物种界限,不断培植新物种,生产出有利于人类健康的食品。解决粮食短缺问题,减少农药使用,避免环境污染,增加食物营养,提高附加价值,增加食物种类,提升食物品质,促进生产效率,带动相关产业 2 转基因食品的隐患 虽然转基因食品研究历史只有短短几十年,但其提高产量、增强自身抗病抗虫等优点较为明显,另一方面,其潜在的风险,如过敏性、毒性及对环境影响也令世人关注。 1 毒性问题。 一些研究学者认为,对于基因的人工提炼和添加,可能在达到某些人们想达到的效果的同时,也增加和积聚了食物中原有的微量毒素。 2 过敏反应问题。 对于一种食物过敏的人有时还会对一种以前他们不过敏的食物产生过敏,比如:科学家将玉米的某一段基因加入到核桃、小麦和贝类动物的基因中,蛋白质也随基因加了进去,那么,以前吃玉米过敏的人就可能对这些核桃、小麦和贝类食品过敏。 2 营养问题。 科学家们认为外来基因会以一种人们目前还不甚了解的方式破坏食物营养成分。 3 对抗生素的抵抗作用。 当科学家把一个外来基因加入到植物或细菌中去,这个基因会与别的基因连接在一起。人们在服用了这种改良食物后,食物会在人体内将抗药性基因传给致病的细菌,使人体产生抗药性。 25 对环境的威胁。 在许多基因改良品种中包含有从杆菌中提取出来的细菌基因,这种基因会产生一种对昆虫和害虫有毒的蛋白质。在一次实验室研究中,一种蝴蝶的幼虫在吃了含杆菌基因的马利筋属植物的花粉之后,产生了死亡或不正常发育现象,这引起了生态学家们的另一种担心,那些不在改良范围之内的其它物种有可能成为改良物种的受害者。 针对转基因食品安全性的监督与管理 1 加强对转基因食品的安全性评估 对常用转基因食品重点监测与评估 2 对市场转基因食品标识 对转基因产品实施标识管理是世界多数国家和国际组织的普遍做法,主要维护消费者的知情权和选择权。 3 对转基因食品进行监督 对市场监督,防止不法商人利用潜在隐患转基因食品危害人民,并提供专门法律监控。 中国对转基因食品安全性问题的看法 中国我国政府高度关注现代生物技术,支持和鼓励转基因生物和转基因食品的研究。迄今为止,中国是唯一开发出自己的转基因作物并投入生产的发展中国家。早在1992年,我国卫生部就规定了新资源食品的试生产、正式生产的审批制度。2001年6月,国务院颁布了《农业转基因生物安全管理条例》。2002年,农业部颁布了有关农业转基因生物的安全评价、进口、标识等一系列管理办法和管理程序。卫生部也颁布了《转基因食品卫生管理条例》。经政府批准进口或商业化种植的每一个转基因植物品种或产品都是通过严格的农业转基因生物的食品安全性与环境安全性评价的。目前筛选出来的转基因作物对人类健康不具有危害,也尚无发生因转基因引起叫较明显的食物过敏事故。转基因食品与传统食品可能具有一样安全性,在长达10多年的应用中没有发生因转基因引起食品引发的病症。这进一步说明了转基因产品并没有较大危险;不受威胁;一般不出事故的,转基因产品还是有较好安全性的的。 这个是我最近刚写论文在网上找了很多拼凑起来的,希望对你有用,你就看看吧,好的话就参考下,不好就当看看也好
至少现在还没有什么问题的,不用怕,该吃就吃啊。
转基因安全? 抱歉,目前没有人能够拍胸脯说:"放心把,转基因食品100%安全,吃了绝对不会有事,"即使有,那也是跟转基因有关联的人,比如搞转基因食品的,卖转基因食品的,啊,比如张启发,曾经他说过,不比喝水危险~~~抵制转基因食物,从自己做起!
我觉得没啥毛病,把好的基因转入进去,袁隆平也是用杂交水稻养活很多人,也是将好的基因通过杂交导入,虽然前者是强制把好的基因转进去,但是也不影响他是好基因这个大前提,就像以前那样,人总觉得地球是平的,但是结果呢?新事物的诞生少不了无知的人们的质疑,别人云亦云
转基因食品安全性论文1000
转基因产品有何风险?人类将基因片段重组,将成千上万个重组后的“基因构建”利用细菌或者基因枪植入目标细胞核中,两种方法都能且都将破坏DNA,而且无法确定“基因构建”在基因长链的具体位置,因而基因改造带来的结果是无法完全控制的风险1:转基因技术在基因重组过程中能够被人植入破坏人体系统的有害基因,例如:破坏人体免疫系统、生殖系统(严重的堪比HIV,因不同转基因食品或转基因食品的摄入量的不同而不同)风险2:由于人类掌握的植入技术太过粗糙,基因改造的结果无法完全控制,所以目前世界上所有的转基因产品都有着未知的特性,在经济政治等方面出于各自的利益,只发现新研制出的某些转基因产品有高产等有利特性,不研究新作物又何有害的特性或者明知有毒而故意将之迅速推广,甚至因国际政治经济等利益就不惜故意推广至他国,不惜毒死他国人民!食用不同的转基因食物,会不同的使体内白细胞异常、破坏人的心脏、肝胆、脾胃,诱发肿瘤致癌等多种不可逆性后果!笔者观点:客观的来讲转基因技术本身的发展值得鼓励,但如今这些转基因产品比毒药还要可怕!!!因为你不知道吃转基因产品不久将发生什么!!!在技术极度不完善的现阶段就将转基因品大规模商业化推广供人食用就如同谋财害命!!!人们只有了解转基因的风险时在自主决定是否食用转基因食品,并自行承担后果!!!
转基因广受关注,未来转基因食品可能会越来越多,你敢吃吗?
转基因生物和转基因食品都不安全性,远离转基因食品。
转基因食品(Genetically Modified Food)是指利用转基因生物技术直接获得的转基因生物或者以转基因生物为原料加工生产的食品。 其根据来源不同可分为植物性转基因食品、动物性转基因食品和微生物性转基因食品。转基因食品具有产量高、成本低、抗病虫害等优势,但也存在潜在的安全性问题。优点转基因食品有较多的优点:可增加作物产量;可以降低生产成本;可增强作物抗虫害、抗病毒等的能力;提高农产品耐贮性。例如:转基因食品——土豆;缩短作物开发的时间;摆脱四季供应;打破物种界限,不断培植新物种,生产出有利于人类健康的食品。缺点转基因食品也有缺点:所谓的增产是不受环境影响的情况下得出的,如果遇到雨雪的自然灾害,也有可能减产更厉害。同时在栽培过程中,转基因作物可能演变为农田杂草;可能通过基因漂流影响其他物种;转基因食品可能会引起过敏等
转基因食品的安全性论文
为了预防在基因操作过程中,把一些可能对人体健康或环境安全有害的基因转入受体生物,或者由于基因操作引起受体生物产生不可预期的变化,影响人体健康和环境安全,所以转基因生物的安全性一定要进行科学的评价。
我觉得没啥毛病,把好的基因转入进去,袁隆平也是用杂交水稻养活很多人,也是将好的基因通过杂交导入,虽然前者是强制把好的基因转进去,但是也不影响他是好基因这个大前提,就像以前那样,人总觉得地球是平的,但是结果呢?新事物的诞生少不了无知的人们的质疑,别人云亦云
转基因食品,如果通过安全检验,你会买吗?
转基因食品的安全性 随着转基因食品的商品化生产,转基因食品的安全性越来越受到关注。传统的毒理学的食品安全评价方法已不能完全适用 于转基因技术食品。对于转基因食品的安全性,目前国际上没有统一说法,争论的重点应在转基因食物是否会产生毒素、是否可通过DNA蛋白质过敏反应、是否影响抗生素耐性等方面。 1 转基因食品安全性下的优越点 事物都具两面性,转基因食品同样具备着优点:可增加作物单位面积产量;可以降低生产成本;通过转基因技术可增强作物抗虫害、抗病毒等的能力;提高农产品的耐贮性,延长保鲜期,满足人民生活水平日益提高的需求;可使农作物开发的时间大为缩短;可以摆脱季节、气候的影响,四季低成本供应;打破物种界限,不断培植新物种,生产出有利于人类健康的食品。解决粮食短缺问题,减少农药使用,避免环境污染,增加食物营养,提高附加价值,增加食物种类,提升食物品质,促进生产效率,带动相关产业 2 转基因食品的隐患 虽然转基因食品研究历史只有短短几十年,但其提高产量、增强自身抗病抗虫等优点较为明显,另一方面,其潜在的风险,如过敏性、毒性及对环境影响也令世人关注。 1 毒性问题。 一些研究学者认为,对于基因的人工提炼和添加,可能在达到某些人们想达到的效果的同时,也增加和积聚了食物中原有的微量毒素。 2 过敏反应问题。 对于一种食物过敏的人有时还会对一种以前他们不过敏的食物产生过敏,比如:科学家将玉米的某一段基因加入到核桃、小麦和贝类动物的基因中,蛋白质也随基因加了进去,那么,以前吃玉米过敏的人就可能对这些核桃、小麦和贝类食品过敏。 2 营养问题。 科学家们认为外来基因会以一种人们目前还不甚了解的方式破坏食物营养成分。 3 对抗生素的抵抗作用。 当科学家把一个外来基因加入到植物或细菌中去,这个基因会与别的基因连接在一起。人们在服用了这种改良食物后,食物会在人体内将抗药性基因传给致病的细菌,使人体产生抗药性。 25 对环境的威胁。 在许多基因改良品种中包含有从杆菌中提取出来的细菌基因,这种基因会产生一种对昆虫和害虫有毒的蛋白质。在一次实验室研究中,一种蝴蝶的幼虫在吃了含杆菌基因的马利筋属植物的花粉之后,产生了死亡或不正常发育现象,这引起了生态学家们的另一种担心,那些不在改良范围之内的其它物种有可能成为改良物种的受害者。 针对转基因食品安全性的监督与管理 1 加强对转基因食品的安全性评估 对常用转基因食品重点监测与评估 2 对市场转基因食品标识 对转基因产品实施标识管理是世界多数国家和国际组织的普遍做法,主要维护消费者的知情权和选择权。 3 对转基因食品进行监督 对市场监督,防止不法商人利用潜在隐患转基因食品危害人民,并提供专门法律监控。 中国对转基因食品安全性问题的看法 中国我国政府高度关注现代生物技术,支持和鼓励转基因生物和转基因食品的研究。迄今为止,中国是唯一开发出自己的转基因作物并投入生产的发展中国家。早在1992年,我国卫生部就规定了新资源食品的试生产、正式生产的审批制度。2001年6月,国务院颁布了《农业转基因生物安全管理条例》。2002年,农业部颁布了有关农业转基因生物的安全评价、进口、标识等一系列管理办法和管理程序。卫生部也颁布了《转基因食品卫生管理条例》。经政府批准进口或商业化种植的每一个转基因植物品种或产品都是通过严格的农业转基因生物的食品安全性与环境安全性评价的。目前筛选出来的转基因作物对人类健康不具有危害,也尚无发生因转基因引起叫较明显的食物过敏事故。转基因食品与传统食品可能具有一样安全性,在长达10多年的应用中没有发生因转基因引起食品引发的病症。这进一步说明了转基因产品并没有较大危险;不受威胁;一般不出事故的,转基因产品还是有较好安全性的的。 这个是我最近刚写论文在网上找了很多拼凑起来的,希望对你有用,你就看看吧,好的话就参考下,不好就当看看也好