A New UHPLC-UV-MS Method for Detection and Identification of Bioactive Compounds

Area of Science:

• Food Science
• Analytical Chemistry
• Biochemistry

Background:

• Growing consumer interest in food composition drives the need for advanced analytical methods.
• Understanding phytochemicals in foods and feeds is crucial.
• Analyzing diverse compounds with varying properties presents a significant challenge.

Purpose of the Study:

• To develop a sensitive liquid chromatography-mass spectrometry (LC-MS) method for detecting, identifying, and quantifying a wide range of compounds.
• To cover both hydrophilic and hydrophobic nutrients in a single analytical run.
• To establish a comprehensive screening tool for food and feed analysis.

Main Methods:

• Utilized a 45-minute chromatographic separation on a C18-PFP stationary phase for enhanced resolution of isomers.
• Employed two columns in series with ultra-high-pressure instrumentation (1,000 bar) for improved separation.
• Integrated an in-line ultraviolet (UV) diode-array detector for spectral confirmation of compound identities.

Main Results:

• Successfully measured a broad spectrum of bioactive compounds including flavonoids, phenolic acids, vitamins, tocochromanols, phytosterols, sugars, organic acids, lipids, amines, and nucleic acids.
• Demonstrated the method's capability by analyzing four distinct chocolate products.
• Identified and quantified a wide array of small molecules and complex bioactives.

Conclusions:

• The developed LC-UV-MS method offers a more comprehensive analysis of diverse bioactive constituents in food and feed products.
• This methodology enables the discovery of new commercial value in the food processing industry.
• The data generated can be leveraged to enhance consumer health and well-being through improved food understanding.