getpdf NLM PubMed Logo https://doi.org/10.17113/ftb.60.03.22.7505   

Primary Metabolite Chromatographic Profiling as a Tool for Chemotaxonomic Classification of Seeds from Berry Fruits

Đurđa Krstić1orcid tiny, Tomislav Tosti1orcid tiny, Saša Đurović2orcid tiny, Milica Fotirić Akšić3orcid tiny, Boban Đorđević3orcid tiny,Dušanka Milojković-Opsenica1orcid tiny, Filip Andrić1orcid tiny and Jelena Trifković1*orcid tiny

1University of Belgrade, Faculty of Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia

2Institute of General and Physical Chemistry, Studentski trg 12/V, 11158 Belgrade, Serbia

3University of Belgrade, Faculty of Agriculture, Nemanjina 6, 11080 Belgrade, Serbia

Article history:

Received: 14 September 2021

Accepted: 19 April 2022

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Key words:

sugars; lipids; fatty acids; fingerprint; berry seeds; chromatography techniques

Summary:

Research background. Considering the importance of consumption of berry fruits with proven health-beneficial properties, and difficulties in quality control of products of specific botanical and geographic origin, a fingerprint method was developed, based on advanced data analysis (pattern recognition, classification), in order to relate the variability of nutrients among selected cultivars according to primary metabolites profile.

Experimental approach. Forty-five samples of genuine berry fruit cultivars (strawberry, raspberry, blackberry, black currant, blueberry, gooseberry, chokeberry, cape gooseberry, and goji berry) were characterized according to chromatographic profiles of primary metabolites (sugars, lipids and fatty acids) obtained by three chromatographic techniques (high-performance thin-layer chromatography, gas chromatography coupled to mass spectrometry, high-performance anion-exchange chromatography with pulsed amperometric detection).

Results and conclusions. Comprehensive analysis allowed monitoring and identification of metabolites belonging to polar lipids, mono-, di- and triacylglycerols, free fatty acids, sterols, and sterol esters, mono- to heptasaccharides, and sugar alcohols. Chemical fingerprint of berry seeds showed the uniformity of primary metabolites within each fruit species, but revealed differences depending on the botanical origin. All three chromatographic methods provided a discriminative, informative, and predictive metabolomics methodology, which proved to be useful for chemotaxonomic classification.

Novelty and scientific contribution. A novel methodology for the identification of bioactive compounds corresponding to natural products primary metabolites was described. The proposed untargeted metabolite profiling approach could be used in the future as a routine method for tracing of novel bioactive compounds. The knowledge of metabolite composition obtained in this study, can provide a better assessment of genotypic and phenotypic differences between berry fruit species and varieties, and could contribute to development of new breading programs.

*Corresponding author: +381113336766
  +381112184330
  jvelicko@chem.bg.ac.rs

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