作者ffeh (. . . )
看板politics
標題Re: [討論] 我支持美牛及瘦肉精進口的理由---經濟
時間Thu Mar 8 08:03:46 2012
:
: 我隨手剪貼一篇摘要給你
:
: Determination of residual ractopamine concentrations by enzyme
: immunoassay in treated pig's tissues on days after withdrawal
: Author(s): Pleadin, J (Pleadin, Jelka)1; Persi, N (Persi, Nina)1;
: Vulic, A (Vulic, Ana)1; Milic, D (Milic, Dinka)2; Vahcic, N
: (Vahcic, Nada)3
: Source: MEAT SCIENCE Volume: 90 Issue: 3 Pages: 755-758
: DOI: 10.1016/j.meatsci.2011.11.007 Published: MAR 2012
: Times Cited: 0 (from Web of Science)
: Cited References: 27 [ view related records ] Citation Map
:
: Abstract: The objective of this study was to measure residual
: ractopamine concentrations in tissues of pigs as experimental
: animals after treatment with dietary ractopamine for 28
: consecutive days. Ractopamine was administered orally to the
: experimental group (n = 9) in a dose of 0.1 mg/kg body mass per
: day, whereas control animals (n = 3) were left untreated. Treated
: pigs (60 kg) were sacrificed on days 1,3 and 8 of treatment
: discontinuation and residues were determined in kidney, liver,
: muscle, brain and heart tissues using previously validated
: enzyme-linked immunosorbent assay (ELISA) as a quantitative
: screening method. Validation showed good mean recoveries (approx.
: 70-90%) with acceptable inter- and intra-day relative standard
: deviations (RSD<13%), demonstrating the method efficiency in
: determination of ractopamine tissue concentrations. The highest
: ractopamine concentration on day 1 (24 h) after the last exposure
: was recorded in the kidney (12.49 +/- 7.96 ng/g), followed by the
: liver (7.21 +/- 2.73 ng/g), heart (1.26 +/- 0.12 ng/g) and brain
: (0.63 +/- 0.05 ng/g); at this time of withdrawal, residues were
: not detected in the muscle. Ractopamine was depleted rapidly from
: all study tissues, with mostly no detectable residues on day 8 of
: withdrawal. (C) 2011 Elsevier Ltd. All rights reserved.
:
: 這篇是研究長期（二十八天）在食物中添加培林給豬吃，屠宰後組織內培林殘留量有多少
:
: 操弄：每天餵食 0.1 mg/kg，連續餵28天。中斷餵食之後1,3, 8天殺豬取肉。
:
: 結果：
: 中斷1天 => 腎=12.49ng/g 肝=7.21ng/g 肌肉=無法測出 腦=0.63ng/g 心=1.26ng/g
: 中斷8天 => 都測不到
:
如果這篇研究是正確的...那台灣進口的美牛應該都無法測出...
目前衛生署抽查美牛的部分是肌肉...
然後結果如何新聞媒體寫的很清楚...
依照這樣去推論...這篇報告的數據問題很大...
--
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◆ From: 59.125.90.98
1F：→ XSZX:中斷1天應該是牛「還活著」的時候中斷餵食1天 58.115.36.93 03/08 08:10
2F：→ XSZX:不是牛「死了以後」中斷一天..... 58.115.36.93 03/08 08:11
3F：→ XSZX:然後中斷1天無法測出是每天餵食 0.1 mg/kg 58.115.36.93 03/08 08:11
4F：→ XSZX:實際餵食？？？ 58.115.36.93 03/08 08:11
5F：→ XSZX:還有更重要的是這研究不是告訴我們你吃不到肉 58.115.36.93 03/08 08:13
6F：→ XSZX:中殘留的培林，而是告訴我們就算你吃到肉中殘 58.115.36.93 03/08 08:14
7F：→ XSZX:留的培林，只要你不要天天吃很大，加上偶而吃 58.115.36.93 03/08 08:16
8F：→ XSZX:素個幾天，基本上你的身體就會自己把培林代謝 58.115.36.93 03/08 08:16
9F：→ XSZX:掉..... 58.115.36.93 03/08 08:17
10F：→ XSZX:至於那種每天會吃到「12公斤」的，我只能說祝 58.115.36.93 03/08 08:18
11F：→ XSZX:他們一路走好，這種吃法就算沒有吃到培林，光 58.115.36.93 03/08 08:18
12F：→ XSZX:脂肪跟膽固醇就夠他們上路了...... 58.115.36.93 03/08 08:19
13F：推 bounds:每天12公斤.......................... 114.34.52.195 03/08 08:33
14F：→ valepiy:腸胃會先炸掉111.248.105.164 03/08 09:16
15F：推 guare:這篇報告刊登在MEAT SCIENCE這本期刊上。 140.123.185.72 03/08 11:01
16F：→ guare:MEAT SCIENCE這期刊IF=2.619, 在128本食品科 140.123.185.72 03/08 11:02
17F：→ guare:技類別期刊中，排名第15。其它我就不多說了 140.123.185.72 03/08 11:02
我的意思是現在台灣被驗出含瘦肉精的美牛的都是牛排...
也就是牛的肌肉...
以該篇期刊來講...中斷一天以上...肌肉應該
無法測出...
依照美國農場的說法...在宰殺前一個禮拜就會停止餵食瘦肉精...
可是台灣食品股血淋淋的例子就是在肌肉中測出瘦肉精殘存...
所以推斷它的代謝速度並不如這篇期刊講的這麼快...
換句話說就是它殘留在人體內的時間會更長...
※ 編輯: ffeh 來自: 59.125.90.98 (03/08 11:54)
18F：推 guare:的確，還在期刊階段的研究，有時候會有更新 140.123.185.72 03/08 12:31
19F：→ guare:的實驗結果推翻它。就等著看吧。 140.123.185.72 03/08 12:32
20F：→ XSZX:更合理的推斷是美國農場晃點你.... 58.115.36.93 03/08 13:17