Profiling Volatile Compounds in Blackcurrant Fruit using Headspace Solid-Phase Microextraction Coupled to Gas...

Area of Science:

• Plant metabolomics
• Food chemistry
• Analytical chemistry

Background:

• Consumer demand for enhanced fruit flavor drives interest in volatile organic compounds (VOCs).
• High-throughput metabolomic platforms are crucial for quantifying aroma compounds in plant tissues.
• Volatilomics, the study of VOCs, is key to understanding fruit quality.

Purpose of the Study:

• To describe a method for identifying and quantifying VOCs in ripe blackcurrant fruits (Ribes nigrum).
• To establish biomarkers for blackcurrant fruit quality based on identified VOCs.
• To evaluate the advantages and disadvantages of the described analytical method.

Main Methods:

• Headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS).
• Sample preparation involved tissue homogenization, thawing, and mixing with sodium chloride solution.
• VOCs were extracted using an SPME fiber and quantified via GC-MS analysis of ion chromatograms.

Main Results:

• Over 60 VOCs were identified in ripe blackcurrant fruits from different European locations.
• Key aroma compounds, including terpenoids and C6 volatiles, were identified as potential biomarkers for fruit quality.
• The method's accuracy was confirmed by comparing retention times and mass spectra with commercial standards.

Conclusions:

• The HS-SPME-GC-MS method is effective for identifying and quantifying VOCs in blackcurrant fruits.
• Identified VOCs can serve as biomarkers for assessing and improving blackcurrant fruit quality.
• The study highlights the importance of controls for batch correction and drift minimization in volatilomics.