COURSES IN SEPARATION & CHARACTERIZATION OF COMPLEX CARBOHYDRATES

分离课程

• 批准号: 6653606
• 负责人: ROBERTA K MERKLE
• 金额: $ 28.8万
• 依托单位: UNIVERSITY OF GEORGIA
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-01 至 2003-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6653606
• 关键词: bacteria; biomedical resource; carbohydrates; spectrometry

Glycosyl composition analysis was performed on Ehrlichia risticii lipopolysaccharides. The samples were analyzed for monosaccharide composition by preparing the trimethylsilyl derivatives of the methylglycosides followed by gas chromatography (GC) and combined gas chromatography/mass spectrometry (GC-MS) analysis. TMS methylglycosides were prepared from the sample by methanolysis in 3 M HCl followed by N-acetylation with pyridine and acetic anhydride. The samples were then treated with Tri-Sil. GC analysis of the TMS methylglycosides was done on an HP5890 GC using a DB1 fused silica capillary column. GC-MS analysis was performed using an HP5890 GC coupled to a 5970 MSD. Monosaccharides were identified by their retention times in comparison to standards, and the carbohydrate character of these was authenticated by their mass spectra.

对埃里希氏菌进行糖基组成分析 脂多糖。 分析样品的单糖 通过制备三甲基甲硅烷基衍生物的组合物 甲基糖苷，然后进行气相色谱 (GC) 和合并气体分析 色谱/质谱 (GC-MS) 分析。 经颅磁刺激系统 通过在 3 M 中甲醇解从样品中制备甲基糖苷 HCl 然后用吡啶和乙酸酐进行 N-乙酰化。 这 然后用 Tri-Sil 处理样品。 TMS 的 GC 分析 甲基糖苷的分析是在 HP5890 GC 上使用 DB1 熔融石英进行的 毛细管柱。 使用 HP5890 GC 进行 GC-MS 分析 与 5970 MSD 耦合。 单糖的鉴定是通过它们的 与标准品相比的保留时间以及碳水化合物 这些的特征通过它们的质谱得到验证。