版塊導(dǎo)航: 正在加載中...

登錄注冊

應(yīng)《網(wǎng)絡(luò)安全法》要求，自2017年10月1日起，未進行實名認證將不得使用互聯(lián)網(wǎng)跟帖服務(wù)。為保障您的帳號能夠正常使用，請盡快對帳號進行手機號驗證，感謝您的理解與支持！

24小時熱門版塊排行榜

返回列表

本帖產(chǎn)生 1 個翻譯EPI ，點擊這里進行查看

an777

木蟲 (初入文壇)

應(yīng)助: 0 (幼兒園)
金幣: 3785.5
帖子: 22
在線: 13.8小時
蟲號: 503336
注冊: 2008-02-15
性別: GG
專業(yè): 天然有機化學(xué)

[求助] 高懸賞求翻譯(天然產(chǎn)物方面），畢業(yè)論文漢譯英，急

摘要：【目的】利用實驗室所分離出的小葉女貞枝葉部粗提產(chǎn)物進行黃嘌呤氧化酶活性抑制作用實驗，提取分離其中的黃酮類化合物作初步的定性測定。為進一步探究小葉女貞在抗衰老等作用方面奠定基礎(chǔ)【方法】通過煎煮法和柱層析的方法提取分離出小葉女貞中的粗提產(chǎn)物，對其進行黃嘌呤氧化酶活性抑制實驗，之后通過干柱層析法分離粗提產(chǎn)物中的各個組分，最后利用黃酮類化合物的顯色反應(yīng)對產(chǎn)物中的黃酮類化合物進行定性分析�！窘Y(jié)果】小葉女貞枝葉部初提產(chǎn)物對黃嘌呤氧化酶活性的抑制效果不夠明顯，對其進一步提取分離得到六種產(chǎn)物，通過顯色反映鑒定出其中兩種產(chǎn)物屬于黃酮類化合物�！窘Y(jié)論】小葉女貞枝葉部粗提產(chǎn)物作為黃嘌呤氧化酶活性抑制劑的開發(fā)前景不大，但可在DPPH自由基清除率、羥基自由基清除率以及超氧陰離子清除率進行進一步的研究,以期在小葉女貞枝抗氧化作用方面取得新的收獲。

[ Last edited by an777 on 2011-4-28 at 13:44 ]

回復(fù)此樓

» 猜你喜歡

281求調(diào)劑（0805）已經(jīng)有9人回復(fù)
293求調(diào)劑已經(jīng)有14人回復(fù)
0703化學(xué)336分求調(diào)劑已經(jīng)有6人回復(fù)
304求調(diào)劑已經(jīng)有9人回復(fù)
環(huán)境領(lǐng)域全國重點實驗室招收博士1-2名已經(jīng)有3人回復(fù)
材料專碩306英一數(shù)二已經(jīng)有10人回復(fù)
301求調(diào)劑已經(jīng)有6人回復(fù)
一志愿天津大學(xué)化學(xué)工藝專業(yè)（081702）315分求調(diào)劑已經(jīng)有7人回復(fù)
302求調(diào)劑已經(jīng)有6人回復(fù)
26博士申請已經(jīng)有3人回復(fù)

1樓 2011-04-28 13:14:30

已閱回復(fù)此樓關(guān)注TA 給TA發(fā)消息送TA紅花 TA的回帖

zuodg

鐵桿木蟲 (正式寫手)

有為青年

翻譯EPI: 180
應(yīng)助: 5 (幼兒園)
貴賓: 0.015
金幣: 6765.2
散金: 48
紅花: 18
帖子: 500
在線: 285.5小時
蟲號: 1055187
注冊: 2010-07-10
性別: GG
專業(yè): 外國語言

【答案】應(yīng)助回帖

an777(金幣+200, 翻譯EPI+1): 萬分感謝 2011-04-28 14:15:11

引用回帖:

Originally posted by an777 at 2011-04-28 13:14:30:
摘要：【目的】利用實驗室所分離出的小葉女貞枝葉部粗提產(chǎn)物進行黃嘌呤氧化酶活性抑制作用實驗，提取分離其中的黃酮類化合物作初步的定性測定。為進一步探究小葉女貞在抗衰老等作用方面奠定基礎(chǔ)【方法】通過煎煮法 ...

Abstract
Purpose: Crude extracts from leaves and stems of Ligustrum quihoui Carr. were subjected to analyze their inhibition effect on xanthine oxidase, and flavones were used to conduct primary qualitative research. Our work lays foundation for anti-aging research of Ligustrum quihoui Carr.
Method: Crude extracts of Ligustrum quihoui Carr. were obtained by boil and chromatography. Flavones components from crude extracts were tested for their inhibitory effect on xanthine oxidase. Dry-column chromatography was performed to separate each fraction of crude extracts. In the end flavones chromogenic reaction was carried out to characterize flavones qualitatively.
Result: Inhibitory effect of crude extracts from leaves and stems of Ligustrum quihoui Carr. on Xanthine oxidase was not obvious enough. Total six compounds were obtained from further isolation, of which two are characterized to be flavone through chromogenic reaction.
Conclusion: It doesn’t seem optimistic to develop crude extracts from leaves and stems of Ligustrum quihoui Carr. into inhibition ingredient on xanthine oxidase. Further research work might be elimination of free radicals DPPH, hydroxyl radicals and superoxide anion with our progress. It is expected crude extracts from leaves and stems of Ligustrum quihoui Carr. might play a rule in anti-oxidation.

贊一下

回復(fù)此樓

要活的出彩

2樓2011-04-28 14:08:26

已閱回復(fù)此樓關(guān)注TA 給TA發(fā)消息送TA紅花 TA的回帖

相關(guān)版塊跳轉(zhuǎn) 我要訂閱樓主 an777 的主題更新