用差分扫描热量计进行乳清蛋白的热特性和分离
Charity C Jennings1, McCall Freidenberger1, Shawn A Christensen1
1Department of Nutrition, Dietetics, and Food Science, Brigham Young University, UT 84606, United States.
Food chemistry
|January 6, 2024
概括
量化单个乳清蛋白对于它们独特的生物应用至关重要. 研究人员使用纳米差异扫描热量计 (DSC) 发现了最佳条件,以在一次扫描中检测所有六种乳清蛋白.
科学领域:
- 生物化学 生物化学
- 食品科学 食品科学 食品科学
- 蛋白质化学 蛋白质化学
背景情况:
- 商用乳清产品含有6-7种乳清蛋白的混合物.
- 越来越多的人对利用单个乳清蛋白来实现其特定的生物活动感兴趣.
- 在提取之前,需要对单个乳清蛋白质进行准确的量化和结构完整性的评估.
研究的目的:
- 描述六种纯化乳清蛋白的变性温度和度.
- 为了确定在一次扫描中同时检测所有六种乳清蛋白的最佳条件.
- 在不同的pH值和离子条件下评估乳清蛋白的结构完整性.
主要方法:
- 使用纳米差异扫描热量计 (DSC) 来分析蛋白质变性.
- 研究了6种纯化的乳清蛋白,其pH值范围为3-9.
- 在离子化条件下评估蛋白质的行为.
主要成果:
- 对于不同pH值的单个乳清蛋白的特征性变温度和值.
- 确定了在单个DSC扫描中检测所有六种乳清蛋白的最佳条件.
- 确定在pH值6.7的EDTA MOPs缓冲器中的乳清是同时检测的理想条件.
结论:
- 该研究提供了一种在混合物中量化单个乳清蛋白的方法.
- 使用DSC建立了分析乳清蛋白结构完整性的最佳条件.
- 这项研究有助于分离和应用特定的乳清蛋白来满足它们的生物功能.
更多相关视频
05:45Capillary Electrophoresis-based Hydrogen/Deuterium Exchange for Conformational Characterization of Proteins with Top-down Mass Spectrometry
Published on: June 8, 2021
3.3K
10:35Composition and Properties of Aquafaba: Water Recovered from Commercially Canned Chickpeas
Published on: February 10, 2018
33.6K
相关概念视频
Two-dimensional Gel Electrophoresis
6.0K
Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such...
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such...
6.0K
Capillary Electrophoresis: Applications
400
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
400
SDS-PAGE
28.0K
Gel electrophoresis is a method that separates biological macromolecules like nucleic acids or proteins by forcing them to pass through a gel matrix under an electric field.
A variation of gel electrophoresis, termed polyacrylamide gel electrophoresis (PAGE), is commonly used for separating proteins according to their molecular size by passing them through a polyacrylamide gel. Because of the varying charges associated with amino acid side chains, PAGE can be used to separate intact...
A variation of gel electrophoresis, termed polyacrylamide gel electrophoresis (PAGE), is commonly used for separating proteins according to their molecular size by passing them through a polyacrylamide gel. Because of the varying charges associated with amino acid side chains, PAGE can be used to separate intact...
28.0K
