SDBS及NaOH誘導(dǎo)蛋白質(zhì)在云母表面解吸附的原子力顯微鏡研究
[Abstract]:Protein is one of the most important components in organism, which is involved in almost all life activities and processes. Proteins can spontaneously adsorb on almost any material surface, a phenomenon that has long been known. The adsorption of proteins on the interface is a common phenomenon and the key to solve many problems in the field of interface science, biomaterials and bioengineering. It is of great theoretical and practical significance to study the problem of protein adsorption on the interface. At present, the study on the adsorption behavior of protein on the material is more mature, and the study on the desorption behavior of protein on the material is still in the primary stage. At present, the study of protein desorption on mica surface has not been reported. The purpose of this paper is to explore the method of protein desorption on mica surface. The adsorption and desorption of bovine serum albumin (BSA) (BSA) and lysozyme on mica surface were observed intuitively by atomic force microscope (AFM). The desorption was achieved by using sodium dodecylbenzene sulfonate (SDBS) and sodium hydroxide (NaOH) as desorption agents. The main work of this thesis is as follows: AFM study of 1.SDBS induced protein desorption from mica surface. Using SDBS as desorption agent, the desorption of protein from mica surface was realized by the interaction between SDBS and protein. The results of AFM characterization showed that, The adsorption of bovine serum albumin and lysozyme on mica surface increased with the increase of protein concentration. The desorption degree of protein increased with the increase of SDBS concentration, and increased with the increase of desorption time. Lysozyme was more easily adsorbed on the surface of mica than that of BSA in neutral environment. Lysozyme is less easily desorbed than BSA. AFM study of 2.NaOH induced protein desorption from mica surface. Protein is a amphoteric electrolyte composed of amino acids, which can be dissociated into negative or positively charged groups under certain solution pH conditions. By changing the pH of the solution, the protein with negative charge or negative charge is enhanced, so that the electrostatic repulsive force between mica and protein is greater than the gravity between them, and then the desorption of protein from mica is realized. The results of AFM characterization show that the electrostatic repulsive force between mica and protein is greater than that between mica and protein. BSA and lysozyme can be desorbed from mica by soaking the adsorbed sample into sodium hydroxide solution. The pH value of BSA desorbed was significantly different from its isoelectric point, but the pH value of lysozyme desorbed was basically consistent with its isoelectric point.
【學(xué)位授予單位】:河北大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:O647.3
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 趙志杰;張萍;楊家香;郝長春;周星飛;李賓;;液體環(huán)境單分子免疫球蛋白G的原子力顯微鏡高分辨成像[J];分析化學(xué);2016年08期
2 孫鵬;梁彥秋;張立華;鄧斌;臧樹良;;陰陽離子型表面活性劑與牛血清白蛋白結(jié)合反應(yīng)的比較研究[J];濕法冶金;2013年02期
3 康鍇;盧滇楠;劉錚;;蛋白質(zhì)在溫度響應(yīng)性PNIPAAm接枝硅膠表面吸附和解吸過程:分子模擬和實(shí)驗(yàn)研究(英文)[J];Chinese Journal of Chemical Engineering;2012年02期
4 王歡;王曉玲;;光譜法研究十二烷基苯磺酸鈉與牛血清白蛋白的相互作用[J];日用化學(xué)工業(yè);2012年01期
5 李國平;呂英海;周仕學(xué);曹智琨;;蒙脫石對蛋白質(zhì)吸附行為的研究[J];硅酸鹽通報;2010年04期
6 梁彥秋;孫鵬;鄧斌;趙雪;臧樹良;;十二烷基苯磺酸鈉與牛血清白蛋白的相互作用[J];環(huán)境科學(xué)與技術(shù);2009年01期
7 李藝;程摂時;;蛋白質(zhì)在固體表面吸附的研究進(jìn)展[J];高分子通報;2007年03期
8 文九巴;樊麗梅;趙勝利;高春芳;宋國英;;硅片載體表面形貌對蛋白質(zhì)吸附的影響[J];功能材料;2007年02期
9 譚幗馨,崔英德,肖楚民;牛血清白蛋白在NVP/HEMA無規(guī)共聚物水凝膠上的吸附研究[J];離子交換與吸附;2004年03期
10 王升富,杜丹,鄒其超;磷鉬鎢雜多酸-L-半胱氨酸自組裝膜電極的電化學(xué)性質(zhì)[J];物理化學(xué)學(xué)報;2001年12期
相關(guān)博士學(xué)位論文 前4條
1 王艷偉;DNA凝聚過程中溶劑效應(yīng)的單分子研究[D];山東師范大學(xué);2011年
2 朱向東;磷酸鈣生物陶瓷表面結(jié)構(gòu)和性質(zhì)與蛋白質(zhì)特異性吸附[D];四川大學(xué);2006年
3 周笑鵬;蛋白質(zhì)吸附平衡和動力學(xué)理論研究[D];天津大學(xué);2006年
4 王君;表面活性劑輔助蛋白質(zhì)復(fù)性過程機(jī)理研究[D];清華大學(xué);2004年
相關(guān)碩士學(xué)位論文 前6條
1 孫婧;自組裝蛋白質(zhì)單分子層間的力學(xué)行為研究[D];重慶大學(xué);2016年
2 蘇曉航;pH響應(yīng)型高分子層介導(dǎo)的蛋白質(zhì)吸附/脫附[D];南京大學(xué);2015年
3 李鵬程;膠原蛋白自組裝結(jié)構(gòu)及其離子效應(yīng)的研究[D];江西師范大學(xué);2013年
4 李莎莎;蛋白質(zhì)吸附的拉曼光譜研究[D];天津大學(xué);2008年
5 詹東妮;蛋白質(zhì)在PEU/LCP復(fù)合生物材料上的吸附行為研究[D];重慶大學(xué);2006年
6 任國發(fā);牛血清白蛋白的電化學(xué)研究及信息分析[D];河北師范大學(xué);2005年
,本文編號:2374093
本文鏈接:http://sikaile.net/kejilunwen/huaxue/2374093.html