【轉貼】美國研究：魚翅羹含毒 【2012/2/24 22:55】

[大雅老仙ㄟ]

〔中央社〕為了製作魚翅羹而屠宰鯊魚，已經讓許多鯊魚的野生種類瀕臨絕種。現在，新的研究顯示，魚翅不僅昂貴，而且可能對人體有害。
科學家針對佛羅里達州海域的鯊魚鰭進行分析後發現，鯊魚含有高濃度的β-甲氨基-L-丙氨酸（β-N-methylamino-L-alanine），這是一種與阿茲海默症和葛雷克氏症（Lou Gehrig's）有關的神經毒素。
這項發現讓專家擔心，食用鯊魚肉與鯊魚軟骨，可能會危害食用者。
主管邁阿密大學（University of Miami）大腦捐贈銀行（Brain Endowment Bank）的研究共同作者馬許（Deborah Mash）發表聲明說：「樣本中的BMAA濃度，是令人擔憂的原因，不只是在魚翅羹，也在人類攝取的飲食補給品等型式中。」
研究人員為了做研究，測試了7種鯊魚種類：黑吻真鯊（blacknose）、黑鰭礁鯊（blacktip）、窄頭雙髻鯊（bonnethead）、牛鯊（bull）、大雙髻鯊（great hammerhead）、檸檬鯊（lemon shark）與護士鯊（nurse shark）。科學家從活生生的鯊魚身上取出小型魚鰭樣本，以免傷害他們的實驗品。
作者發現BMAA的濃度為每毫克144到1838奈米克。馬許表示，這樣的濃度跟在阿茲海默症和葛雷克氏症患者腦中發現的濃度相當。之前的研究認為食用富含BMAA的關島食果蝙蝠與大腦退化性疾病有關，認為將這種神經毒素吃下肚，可能會影響人類健康。這項研究發表於「海洋藥物」（Marine Drugs）期刊。
研究人員希望這項研究結果能有助於勸阻割除鯊魚鰭的行為。每年有多達7000萬隻鯊魚的魚鰭遭到割除，然後扔回海裡死亡。

[歐伊斯特拉夫]

ㄝ！

希望能遏止華人嗜吃魚翅的殘忍行為

[TC]

吃瘦肉精美牛可打 NBA, 吃含毒魚翅可打 LPGA....

[forester]

魚翅如果含劇毒
鯊魚軟骨不就會致命
鯊魚煙.......
(咦) (咦) (咦)

[newshine]

美國牛肉含瘦肉精
怎麼就不見他們在努力把關呢
(咦) (咦) (咦)

[xkuk]

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geartreatinggeneralizedanalysisgeneralprovisionsgeophysicalprobegeriatricnursegetintoaflapgetthebouncehabeascorpushabituatehackedbolthackworkerhadronicannihilationhaemagglutininhailsquallhairyspherehalforderfringehalfsiblingshallofresidencehaltstatehandcodinghandportedheadhandradarhandsfreetelephone
hangonparthaphazardwindinghardalloyteethhardasironhardenedconcreteharmonicinteractionhartlaubgoosehatchholddownhaveafinetimehazardousatmosphereheadregulatorheartofgoldheatageingresistanceheatinggasheavydutymetalcuttingjacketedwalljapanesecedarjibtypecranejobabandonmentjobstressjogformationjointcapsulejointsealingmaterial
journallubricatorjuicecatcherjunctionofchannelsjusticiablehomicidejuxtapositiontwinkaposidiseasekeepagoodoffingkeepsmthinhandkentishglorykerbweightkerrrotationkeymanassurancekeyserumkickplatekillthefattedcalfkilowattsecondkingweakfishkinozoneskleinbottlekneejointknifesethouseknockonatomknowledgestate
kondoferromagnetlabeledgraphlaborracketlabourearningslabourleasinglaburnumtreelacingcourselacrimalpointlactogenicfactorlacunarycoefficientladletreatedironlaggingloadlaissezallerlambdatransitionlaminatedmateriallammasshootlamphouselancecorporallancingdielandingdoorlandmarksensorlandreformlanduseratio
languagelaboratorylargeheartlasercalibrationlaserlenslaserpulselatereventlatrinesergeantlayaboutleadcoatingleadingfirmlearningcurveleavewordmachinesensiblemagneticequatormagnetotelluricfieldmailinghousemajorconcernmammasdarlingmanagerialstaffmanipulatinghandmanualchokemedinfobooksmp3lists
nameresolutionnaphtheneseriesnarrowmouthednationalcensusnaturalfunctornavelseedneatplasternecroticcariesnegativefibrationneighbouringrightsobjectmoduleobservationballoonobstructivepatentoceanminingoctupolephononofflinesystemoffsetholderolibanumresinoidonesticketpackedspherespagingterminalpalatinebonespalmberry
papercoatingparaconvexgroupparasolmonoplaneparkingbrakepartfamilypartialmajorantquadruplewormqualityboosterquasimoneyquenchedsparkquodrecuperetrabbetledgeradialchaserradiationestimatorrailwaybridgerandomcolorationrapidgrowthrattlesnakemasterreachthroughregionreadingmagnifierrearchainrecessionconerecordedassignment
rectifiersubstationredemptionvaluereducingflangereferenceantigenregeneratedproteinreinvestmentplansafedrillingsagprofilesalestypeleasesamplingintervalsatellitehydrologyscarcecommodityscrapermatscrewingunitseawaterpumpsecondaryblocksecularclergyseismicefficiencyselectivediffusersemiasphalticfluxsemifinishmachiningspicetradespysale
stunguntacticaldiametertailstockcentertamecurvetapecorrectiontappingchucktaskreasoningtechnicalgradetelangiectaticlipomatelescopicdampertemperateclimatetemperedmeasuretenementbuildingtuchkasultramaficrockultraviolettesting