## Abstract HTHRGC was found essential for optimizing representative preparation of high molecular weight samples and enabling fingerprinting of heavy fractions of crude oils and associated paraffinic deposits in production pipelines. Laboratory experiments aimed at simulating the process of paraff
Application of High Temperature High Resolution Gas Chromatography to Crude Extracts of Propolis
✍ Scribed by dos Santos Pereira, Alberto ;Pinto, Angelo C. ;Nobrega Cardoso, Jari ;Radler de Aquino Neto, Francisco ;Freiman de Souza Ramos, Mônica ;Dellamora-Ortiz, Gisela M. ;Pereira dos Santos, Elisabete
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 64 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0935-6304
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✦ Synopsis
The underivatized acetone and hexane fractions from propolis samples (predominant flora Citrus spp. and Vernonia polyanthes) were analyzed by HT-HRGC (high temperature high resolution gas chromatography) and HT-HRGC coupled to mass spectrometry (HT-HRGC-MS). Several compounds, including flavonoid aglycones, phenolic acids, and high molecular weight compounds were characterized in crude extracts by HT-HRGC-MS. HT-HRGC and HT-HRGC-MS were shown to be quick and informative tools for rapid analysis of crude extracts without need for prior derivatization and purification.
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