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36晴天金蟲 (小有名氣)
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[求助]
膠原蛋白提取疑惑,求高手指點。。
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一、 The mixture was filtered through two layers of cheese cloth and the residue was re-extracted under the same conditions. Both filtrates were combined. The collagen was precipitated by adding NaCl (powder) to a final concentration of 2.6 M in the presence of 0.05 M tris(hydroxymethyl) aminomethane, pH 7.0.(前文是經(jīng)過濾得到濾液) 1. 求第二句翻譯,主要是添加順序不清楚 2. tris添加量是多少,其作用是什么 3.這里的pH 7.0是指 tris 的嗎 二、在使用胃蛋白酶酶提取膠原蛋白后,不滅酶可以嗎?如果一定要滅,什么時候最好(鹽析?透析?)。。。 謝謝各位的解答! [ Last edited by 紅舟流星 on 2013-9-26 at 13:01 ] |

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