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asd123xukun銅蟲 (小有名氣)
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[交流]
請幫我把一段中文摘要翻譯成英文,謝謝
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分別使用5種不同的商業(yè)蛋白酶對鯊魚皮明膠進(jìn)行水解,并測定其水解產(chǎn)物的DPPH•自由基清除能力、ABTS自由基清除活性以及對Fe2+誘導(dǎo)卵黃脂蛋白多不飽和脂肪酸過氧化反應(yīng)的抑制作用等抗氧化活性指標(biāo)。結(jié)果表明,酸性蛋白酶水解產(chǎn)物具有最佳的抗氧化活性。再利用SP-Sephadex C-25陽離子交換色譜和Sephadex G-50凝膠過濾色譜對酸性蛋白酶水解產(chǎn)物進(jìn)行分離,得到具有較強的清除DPPH•自由基活性的洗脫峰M5。Tricine-SDS-PAGE試驗表明其分子量分布小于3.3KD。 [ Last edited by asd123xukun on 2010-7-28 at 21:19 ] |
| We use five different kinds of commercial protease to hydrolyze shark skin gelatin, and measure the antioxidant activity index of hydrolysis products such as their abilities to eliminate DPPH•radicals and ABTS radicals, as well as their inhibition to Fe(II)-induced yolk lipoprotein polyunsaturated fatty acid peroxidation. The result shows that acidic protease hydrolysis products have the best antioxidant activity. Furthermore, we use SP-Sephadex C-25 cation exchange chromatography and Sephadex G-50 gel filtration chromatography to separate the acidic protease hydrolysis products and get an strong elution peak MS to eliminate the activities of DPPH•radicals. And Tricine-SDS-PAGE experiment indicates that their molecular weight distribution is smaller than 3.3kD. |

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