Anthocyanin Profiling Using UV-Vis Spectroscopy and Liquid Chromatography Mass Spectrometry

Area of Science:

• Analytical Chemistry
• Food Science
• Natural Product Chemistry

Background:

• Anthocyanins are potent antioxidants and natural colorants widely used in food supplements and nutraceuticals.
• Accurate characterization of anthocyanins is essential for understanding their health benefits and applications.
• UV-Vis and mass spectrometry (MS) are key techniques for anthocyanin analysis, but comprehensive reviews are limited.

Purpose of the Study:

• To review the application of UV-Vis and MS spectral data for anthocyanin characterization and identification.
• To explore various quantification approaches for anthocyanins using these spectroscopic methods.
• To provide a comparative evaluation of existing literature on UV-Vis and MS techniques for anthocyanin analysis.

Main Methods:

• Comprehensive literature review of UV-Vis spectroscopy and MS techniques applied to anthocyanins.
• Comparative evaluation of the strengths and limitations of each technique.
• Discussion of complementary strategies combining UV-Vis and MS for enhanced analysis.

Main Results:

• UV-Vis spectroscopy provides insights into anthocyanin composition, including glycosylation and acylation.
• Mass spectrometry, particularly with high-resolution analysis, aids in structural confirmation and identification.
• The selectivity of mass detectors is effective for structural confirmation of anthocyanins.

Conclusions:

• Combining UV-Vis spectroscopy with liquid chromatography-mass spectrometry (LC-MS) offers complementary data for detailed anthocyanin structural analysis.
• Triple quadrupole mass spectrometers provide high sensitivity and selectivity for quantification when analytical standards are available.
• High-resolution MS is valuable for tentative identification of anthocyanins in non-target screening when reference standards are absent.