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The matrix of SDS integrated with linear hydrophilic polymer for resolution of high- and low-molecular weight hyaluronic acids in MEKC
Journal of Food and Drug Analysis ( IF 2.6 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.jfda.2019.10.005
Kung-Hung Lin , Hwang-Shang Kou , Yi-Hui Lin , Chun-Chi Wang

Hyaluronic acid (HA), a multi-functional material, has a high dispersion in molecular weight, and the functions of HA are determined through the size. Nevertheless, hyaluronic acid mixtures are not easily separated due to their polydispersity. In this study, a capillary electrophoresis strategy was developed for resolution of different molecular-weight HA without enzymatic digestion. Here, hyaluronic acid mixtures with low molecular weight (380 kD; LHA) and high molecular weight (2180 kD; HHA) were successfully resolved by the SDS integrated with low molecular-weight polymer in capillary electrophoresis. By optimizing experimental conditions, the separation of LHA and HHA was completed within 14 min. The optimal conditions were as follows: the running buffer was 25 mM borate buffer (pH 9.75) containing 30 mM SDS and 10% polyethylene glycol (MW: 8000); applied voltage was 20 kV (detector at cathode side) and separation temperature was set at 25 °C. The data of method validation showed that calibration plots were linear (r ≥ 0.9977) over a range of 10-50 μg/mL for LHA, and 40-200 μg/mL for HHA. In the evaluation of precision and accuracy for this method, the RSD and RE values were all less than 4.2%. This fascinating technique was successfully applied to the quality control of cosmetic and pharmaceutical containing different ratios of LHA and HHA, and it was feasible for serving as a tool to quantitatively analyze different sizes of HA for clinical survey.

中文翻译:

与线性亲水聚合物集成的 SDS 基质用于分离 MEKC 中的高分子量和低分子量透明质酸

透明质酸(HA)是一种多功能材料,其分子量分散度高,HA的功能是由大小决定的。然而,透明质酸混合物由于其多分散性而不易分离。在这项研究中,开发了一种毛细管电泳策略,用于在不进行酶消化的情况下分离不同分子量的 HA。在这里,低分子量 (380 kD; LHA) 和高分子量 (2180 kD; HHA) 的透明质酸混合物在毛细管电泳中通过与低分子量聚合物集成的 SDS 成功分离。通过优化实验条件,LHA和HHA的分离在14分钟内完成。最佳条件如下:运行缓冲液为 25 mM 硼酸盐缓冲液(pH 9.75),含有 30 mM SDS 和 10% 聚乙二醇(MW:8000); 施加电压为 20 kV(阴极侧检测器),分离温度设置为 25 °C。方法验证的数据表明,LHA 在 10-50 μg/mL 和 HHA 的 40-200 μg/mL 范围内,校准图呈线性(r ≥ 0.9977)。在对该方法精密度和准确度的评价中,RSD 和 RE 值均小于 4.2%。这种引人入胜的技术已成功应用于含有不同比例 LHA 和 HHA 的化妆品和药品的质量控制,并且可以作为定量分析不同大小的 HA 用于临床调查的工具。HHA 为 40-200 μg/mL。在对该方法精密度和准确度的评价中,RSD 和 RE 值均小于 4.2%。这种引人入胜的技术已成功应用于含有不同比例 LHA 和 HHA 的化妆品和药品的质量控制,并且可以作为定量分析不同大小的 HA 用于临床调查的工具。HHA 为 40-200 μg/mL。在对该方法精密度和准确度的评价中,RSD 和 RE 值均小于 4.2%。这种引人入胜的技术已成功应用于含有不同比例 LHA 和 HHA 的化妆品和药品的质量控制,并且可以作为定量分析不同大小的 HA 用于临床调查的工具。
更新日期:2020-01-01
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