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SDS-PAGE电泳

SDS-PAGE电泳的相关文献在1991年到2022年内共计127篇,主要集中在轻工业、手工业、基础医学、农作物 等领域,其中期刊论文124篇、会议论文3篇、专利文献10285篇;相关期刊86种,包括农业环境科学学报、现代农业科技、安徽农业科学等; 相关会议3种,包括第四届全国枇杷学术研讨会、中国蚕学会第六届家蚕和柞蚕遗传育种暨蚕桑产业技术体系遗传育种学术研讨会、中国环境科学学会2010年学术年会等;SDS-PAGE电泳的相关文献由477位作者贡献,包括林艳、梅承芳、董建军等。

SDS-PAGE电泳—发文量

期刊论文>

论文:124 占比:1.19%

会议论文>

论文:3 占比:0.03%

专利文献>

论文:10285 占比:98.78%

总计:10412篇

SDS-PAGE电泳—发文趋势图

SDS-PAGE电泳

-研究学者

  • 林艳
  • 梅承芳
  • 董建军
  • 赵长新
  • 周志娟
  • 付敏
  • 伊莉
  • 刘爱民
  • 向先长
  • 周丽娜
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 梁星; 邓龙雪; 张宇; 刘建忠; 吴晓彤
    • 摘要: 本文选用驴乳清蛋白为原材料,以DPPH自由基清除率为指标,利用计算机模拟酶解驴乳清蛋白,筛选出能够产生抗氧化活性肽的最适蛋白水解酶,以pH、酶解温度、酶底比(质量比)为自变量,采用Design-Expert V8.0.6设计响应面试验,确定以α-胰凝乳蛋白酶酶解驴乳清蛋白制备抗氧化肽的最佳工艺条件。结果表明在底物浓度4%,酶解时间4 h的条件下,当温度达到39°C,pH 8,酶底比4%时得到的酶解肽抗氧化活性最强,10 mg/mL驴乳清蛋白酶解肽的DPPH自由基清除率最高可达46.23%。
    • 施燕平; 孙飞; 蒋政阳
    • 摘要: 本研究以3种楸树的花粉为试材,采用不同的蛋白质提取方法,利用考马斯亮蓝染色法测定了3个树种花粉蛋白质的含量,并通过SDS-PAGE电泳对花粉蛋白质组分进行了分析.结果表明:采用TCA/丙酮沉淀法提取蛋白质,南京老山楸树花粉蛋白质提取率最高;采用不同pH值(6.8、8.8、9.5)的Tris-HCl提取液提取蛋白质,随着pH值不断增大,其蛋白质提取率显著提高,当pH值达9.5时,蛋白质含量最大,SDS-PAGE电泳结果也显示此时蛋白质带明显增加;采用不同pH值(6.8、8.8、9.5)的Tris-HCl提取液提取花粉蛋白质,发现花粉蛋白质分离纯化效果存在明显差异,究其原因可能是pH值不同的影响或浸提样品浓度的差异性造成的.
    • 宁诗文; 崔珊珊; 尚宏丽
    • 摘要: 以大黄花鱼为实验材料,利用酶法水解大黄花鱼肉蛋白制备抗氧化肽.以还原力为响应值,通过单因素结合响应面法对中性蛋白酶酶解大黄花鱼肉蛋白的酶用量、酶解温度、底物浓度以及酶解时间进行了优化,结果表明:四种酶中,中性蛋白酶酶解的酶解液水解度(DH)和还原能力最高.最优酶解工艺条件为酶用量为0.4%、酶解温度45°C、底物浓度25.0%、酶解时间7h、体系pH7.0时,还原力为0.951.酶解液DH为37.51%,超氧阴离子自由基清除力(O2-·)为82.42%.SDS-PAGE(聚丙烯酰氨凝胶电泳)结果显示,酶解7h大黄花鱼肉蛋白肌动蛋白完全消失,水解形成肌球蛋白轻链分子量为27、15和6 kDa.
    • 何晓梅; 徐海军; 邓辉; 张珍林; 孙传伯; 谷仿丽; 余茂耘
    • 摘要: 以霍山铁皮石斛枫斗为试验材料,经脱脂脱色、0.3 mol/L盐溶液浸提、Sevage法脱蛋白、硫酸铵分级沉淀、透析、聚乙二醇10000浓缩、冷冻干燥得到粗品;经SDS PAGE电泳、DEAE 52离子柱和Sephadex G 100凝胶柱分离纯化得到糖蛋白并测定其抗氧化活性.SDS PAGE电泳显示硫酸铵饱和度越大,盐析作用越强,糖蛋白条带越明显,糖蛋白分子量在6.62×104附近;DEAE 52离子柱和Sephadex G 100凝胶柱逐步分离纯化得到2个组分的糖蛋白GP1和GP2;分光光度法测定GP1和GP2中糖蛋白含量分别约为95%和87%;抗氧化结果表明,霍山铁皮石斛糖蛋白具有较强的还原能力且可有效地清除自由基·DPPH、·OH和·O-2.
    • 魏华; 佟金凤; 赵莹莹; 李晓东
    • 摘要: 为系统研究重金属离子(镉和锌)诱导的金属硫蛋白在中华小长臂虾(Palaemonetes sinensis)不同组织(肝胰脏、肌肉)中的表达,采用水相暴露法对中华小长臂虾进行镉(0,0.05,0.08,0.10和0.15mg?L-1)与锌(0,5,8,15和18mg?L-1)的急性染毒试验.通过十二烷基硫酸钠聚丙烯酰胺凝胶电泳(SDS-PAGE)方法分析不同浓度的镉、锌离子在不同染毒时间下(0,24,48和96h),诱导金属硫蛋白(metallothionein,MT)在中华小长臂虾不同组织中的表达差异.结果表明:镉和锌诱导中华小长臂虾MT的表达存在组织差异性和时间效应关系.在肌肉中镉离子和锌离子不能诱导MT的表达.在肝胰脏中,0.05mg?L-1的镉离子可诱导MT的表达,而5mg?L-1的锌离子才能达到相同的效果.两种离子相比较,镉对中华小长臂虾的MT诱导能力更强.时间效应表现为染毒48h肝胰脏中MT表达量最高,诱导表达量随暴露时间的增加而加大,但达到一定程度后即呈下降至稳定趋势.两种重金属对中华小长臂虾肝胰脏MT的诱导能力:Cd2+>Zn2+;MT在中华小长臂虾不同组织中的分布顺序为:肝胰脏>肌肉.染毒后中华小长臂虾肝胰脏中MT的表达有一定的时间效应关系,48h的表达量最高.%In order to systematically study the expression of metallothionein induced by heavy metal ions (cadmium, zinc) in different tissues (hepatopancreas, muscles) of Palaemonetes sinensis, the water phase exposure method was used to treat the Chinese grass shrimps. The shrimps were exposed to cadmium (0, 0.05, 0.08, 0.10 and 0.15 mg?L-1) and zinc (0, 5, 8, 15 and 18 mg?L -1) at different times (0, 24, 48 and 96h). By SDS -polyacrylamide gel electrophoresis (SDS -PAGE) method, the expression of metallothionein (MT) in different tissues of Palaemonetes sinensis was investigated under different concentrations of cadmium and zinc. The results showed that there were tissue differencea and time effects on the expression of MT in Palaemonetes sinensis induced by cadmium and zinc. Cadmium and zinc could not induce MT expression in muscle. In the hepatopancreas, 0.05 mg?L -1 cadmium ion induced MT expression, and 5 mg?L -1 zinc achieved the same effect. Compared between the two kinds of ions, cadmium had stronger ability of inducing MT on Palaemonetes sinensis. The time effect showed that the expression of MT in hepatopancreas was the highest at 48 h after exposure, the expression level increased with the increase of exposure time, and decreased to a stable trend after reaching a certain level. This study showed that the ability of MT inducing hepatopancreas of Palaemonetes sinensis was determined by two heavy metals: Cd2+>Zn2+; the distribution of MT in Palaemonetes sinensis was hepatopancreas > muscle. The expression of MT in the hepatopancreas of Palaemonetes sinensis had a certain time-effect relationship after exposure, and the expression was highest at 48 h.
    • 任雨贺; 刘淑莹; 万茜淋
    • 摘要: [目的]优选人参蛋白质提取的最佳方法,并比较不同生长年份对人参蛋白质含量的影响.[方法]比较丙酮沉淀法、聚乙二醇6000沉淀法、聚乙二醇20000沉淀法、酚提取法、Trizol提取法5种人参蛋白质的提取方法,及不同生长年份的人参蛋白质,采用Bradford方法测定蛋白质含量,SDS-PAGE电泳鉴定蛋白.[结果]丙酮提取法得到的蛋白质纯度最高,电泳条带最清晰完整,且人参蛋白质的含量随生长年份增加而升高.[结论]丙酮沉淀法是一种较好的适用于人参蛋白质提取的方法,5年生人参蛋白质含量最高.%[Objective]The best method of extraction of ginseng protein was optimized,and the effect of different growth years on protein con-tent was compared.[Method]The extraction method of five kinds of ginseng protein was studied by acetone precipitation method,polyethylene glycol 6000 precipitation method,polyethylene glycol 20000 precipitation method,phenol extraction method and Trizol extraction method,and different growth years of ginseng protein.The protein content was determined by Bradford method,SDS-PAGE identification of proteins.[Re-sult]The purity of the protein was the highest in the acetone extraction method, and the electrophoretic bands were the most clear and com-plete, and the content of ginseng protein increased with the growth year.[Conclusion]Acetone precipitation method was a better method for the extraction of ginseng proteins.The protein content of ginseng was the highest in 5 years.
    • 陶雨施; 张佰清
    • 摘要: In order to explore the feasibility of intense pulse light(IPL) technology used in microbial mutant breeding and obtain mutant strains with high yield of polysaccharides,the wild strain of L.bulgaricus IMAU40160 was mutated by IPL.Fourier transform infrared and scanning electron microscopy were used to analyze the primary structure of polysaccharides.Based on superoxide polysaccharide(O2-)and hydroxyl radical(· OH)scavenging ability,the antioxidant capacity of polysaccharides was studied.The mutagenic mechanism of IPL was explored using SDS-PAGE.Results showed that mutant strain L27 could be obtained by IPL mutant breeding and the yield of polysaccharide was (490.98 ± 12.26) mg/L,which increased by 98% compared with that of the wild strain.IPL treatment would not influence the chemical bonds of polysaccharides.After the mutagenesis,polysaccharides showed irregular porous surface morphology and exhibited stronger antioxidant activities.IPL could cause the change of strain protein expression.This result would provide a theoretical basis for further research on the application of IPL in breeding superior strains.In conclusion,IPL could be applied in mutant breeding of mutants with high yield polysaccharide of L.bulgaricus IMAU40160.%为了研究脉冲光技术应用于微生物诱变育种的可行性以及获得多糖高产突变株,以产糖菌保加利亚乳杆菌L.bulgaricus IMAU40160为出发菌株,进行脉冲强光诱变处理.通过红外光谱、扫描电镜以及超氧阴离子(O2-)和羟基自由基(·OH)清除能力的测定,对比分析诱变前后菌株多糖的简单结构和抗氧化能力.SDS-PAGE电泳对脉冲强光的诱变机理进行初探.结果表明,利用脉冲强光诱变技术可选育得到多糖高产突变株L27,其多糖产量高达(490.98±12.26) mg/L,较原始菌株提高了98%.结果表明,脉冲强光诱变不会对菌株多糖官能团产生影响;诱变处理后菌株多糖表面呈现不规则多孔状;脉冲光处理提高了菌株多糖的抗氧化活性,引发了突变株差异蛋白的表达,为脉冲强光应用于优良菌株选育的进一步研究提供了理论依据.综上,脉冲强光技术可应用于L.bulgaricus IMAU40160多糖高产突变株的诱变选育.
    • 管非凡1; 刘孝晨1; 修志静1; 诸葛祥林1; 杨海灵1
    • 摘要: 在本研究中,我们构建了PAL基因家族在9种陆地植物中的系统发育树,发现小麦PAL基因家族发生了明显的基因扩张:在这9种陆地植物中,小麦PAL基因家族成员数量最多,达到26个。基因表达模式热图显示,相对于成熟组织,小麦PAL基因在幼嫩组织中的表达量较高。高纯度的小麦PAL蛋白从小麦嫩叶中提取和纯化,并对其进行了活性测定。本研究为小麦PAL基因家族的进一步研究提供了技术支持。
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