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yungbonjut

金虫 (小有名气)

[求助] 英语求助

红外图谱如图2所示:(a)脂肪酶、(b)纳米银介孔碳载体、(c)固定化脂肪酶。游离脂肪酶的红外图谱中3411cm-1处的吸收峰为–NH的伸缩振动,2917 cm-1和2850 cm-1处的吸收峰为甲基或者亚甲基的伸缩振动峰,2345 cm-1处得吸收峰为C-H的伸缩振动峰,1645 cm-1处的吸收峰是C-O cm-1的伸缩振动峰,1050cm-1处得吸收峰是-O-的伸缩振动峰。对比b、c的图谱可见,在固定化后的载体上出现了脂肪酶在2917 cm-1、 2850 cm-1和2345 cm-1的特征吸收峰,表明脂肪酶已经固载在载体上;同时,脂肪酶在特征吸收峰没有改变,所以酶的二级结构没有发生改变。1050cm-1的吸收峰没有在固定化酶上体现出来,可能是由于该峰是粗酶杂质的吸收峰,未被载体吸附,所以固定化酶上没有出现相应的吸收峰。

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willton

木虫 (著名写手)

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sltmac(金币+1): 2011-11-04 17:22:34
爱与雨下(金币+50): bb代发 2011-11-11 08:40:48
爱与雨下(翻译EPI+1): 2011-11-11 08:41:48
Infrared mapping as figure 2 shows: (a)Lipase, (b) lipase nano silver mesoporous carbon carrier, (c) immobilized lipase. Free lipase infrared mapping of 3411 cm-1 absorption peaks in the expansion for-NH vibration, 2917 cm 1 and 2850 cm-1 place absorption peaks for the expansion of methylene methyl or vibration peak, 2345 cm 1 place absorption peaks for C-H telescopic vibration peak, 1645 cm-1 place absorption peaks is C-O cm-i telescopic vibration peak, 1050 cm-1 place have to absorb the peak is-O-telescopic vibrating peaks. B and c contrast maps of visible, in the immobilized appeared on the carrier in 2917 cm-1 lipase, 2850 cm 1 and 2345 cm-1 characteristics of absorption peaks, show that has been fixed in the carrier in lipase; At the same time, lipase in characteristic absorption peaks doesn't change, so the secondary structure of the enzyme without change. 1050 cm 1 absorption peaks in the immobilized enzyme not reflected on
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