全球最贵汉堡：花费25万英镑用人造牛肉
<p>荷兰马斯特里赫特大学教授马克•波斯特研发出了世界上最贵的汉堡，该汉堡造价高达25万英镑(约合人民币236万元)，汉堡中使用的牛肉并非来自牧场的牛群，而是从牛的干细胞中培育出来的。研发人员想借此证明，全球日益增长的蛋白质需求将无需依赖饲养牛群便能得到满足。该研究得到荷兰政府和一位匿名商人的资助，这名商人可能成为试管汉堡的首位品尝者。</p><p>科学家表示，这种试管培育的肉有望在十年内上市销售，并且有可能被素食主义者列为可食用材料。牛津大学的科学家在2011年就指出，人造牛肉耗费的能源比自然生长的牛肉少45%；另外，人造牛肉需要的土地空间比饲养牛群少99%，释放的温室气体也比后者少78%到95%。</p><p>据联合国粮农组织统计，到2050年全球消费的肉类总量将是现在的两倍，如果不寻求替代品，肉类将会变成奢侈食材。然而在试管肉品正式进入市场之前，英国食品标准局需要证明其食用安全性，并保证它与普通肉的营养价值相同。</p><p><span word="The">The</span> <span word="world">world</span>’<span word="s">s</span> <span word="first">first</span> <span word="test">test</span>-<span word="tube">tube</span> <span word="burger">burger</span> <span word="will">will</span> <span word="be">be</span> <span word="served">served</span> <span word="in">in</span> <span word="London">London</span> <span word="next">next</span> <span word="week">week</span>. <span word="It">It</span> <span word="is">is</span> <span word="made">made</span> <span word="from">from</span> <span word="meat">meat</span> <span word="grown">grown</span> <span word="in">in</span> <span word="a">a</span> <span word="laboratory">laboratory</span>, <span word="rather">rather</span> <span word="than">than</span> <span word="cattle">cattle</span> <span word="raised">raised</span> <span word="in">in</span> <span word="pastures">pastures</span>.</p><p><span word="And">And</span> <span word="its">its</span> <span word="developers">developers</span> <span word="hope">hope</span> <span word="it">it</span> <span word="will">will</span> <span word="show">show</span> <span word="how">how</span> <span word="the">the</span> <span word="soaring">soaring</span> <span word="global">global</span> <span word="demand">demand</span> <span word="for">for</span> <span word="protein">protein</span> <span word="can">can</span> <span word="be">be</span> <span word="met">met</span> <span word="without">without</span> <span word="the">the</span> <span word="need">need</span> <span word="for">for</span> <span word="vast">vast</span> <span word="herds">herds</span> <span word="of">of</span> <span word="cattle">cattle</span>.</p><p><span word="The">The</span> 5<span word="oz">oz</span> ‘<span word="Frankenburger">Frankenburger</span>’, <span word="which">which</span> <span word="cost">cost</span> £250,000 <span word="to">to</span> <span word="produce">produce</span>, <span word="is">is</span> <span word="made">made</span> <span word="from">from</span> 3,000 <span word="tiny">tiny</span> <span word="strips">strips</span> <span word="of">of</span> <span word="meat">meat</span> <span word="grown">grown</span> <span word="from">from</span> <span word="the">the</span> <span word="stem">stem</span> <span word="cells">cells</span> <span word="of">of</span> <span word="a">a</span> <span word="cow">cow</span>.</p>
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