Identification of Flavonoids Using UV-Vis and MS Spectra

Area of Science:

• Plant biochemistry
• Analytical chemistry

Background:

• Flavonoids are vital plant metabolites with diverse human applications in medicine, food, and agriculture.
• Accurate analysis of flavonoid composition in plant extracts is crucial for various scientific and industrial fields.

Purpose of the Study:

• To outline a general, combined approach for the extraction and identification of flavonoids in complex plant matrices.
• To demonstrate the utility of spectrophotometry, thin-layer chromatography (TLC), and liquid chromatography-mass spectrometry (LC-MS) for flavonoid analysis.

Main Methods:

• Extraction of flavonoids from plant material (using blueberry as an example).
• Spectrophotometric measurements and Thin Layer Chromatography (TLC) for initial assessment of flavonoid content and profile.
• Liquid Chromatography-Mass Spectrometry (LC-MS) for specific flavonoid identification.

Main Results:

• The described methods provide initial insights into flavonoid content and composition.
• LC-MS enables the precise identification of individual flavonoid compounds within complex mixtures.
• The combined techniques offer a comprehensive strategy for flavonoid analysis.

Conclusions:

• A versatile analytical strategy combining spectrophotometry, TLC, and LC-MS is effective for analyzing flavonoids in complex plant extracts.
• This approach facilitates the elucidation of flavonoid profiles and the identification of specific compounds.
• The methodology is applicable to various plant-derived materials for scientific and applied purposes.