Phytochemical Characterization of Betula Species

Species of the genus Betula, commonly known as birch, have long been valued in traditional medicine for their diverse bioactive constituents. Modern phytochemical characterisation has revealed a rich array of natural products, including polyphenols, flavonoids, diarylheptanoids and triterpenes, distributed across bark, leaves and buds. Analytical techniques such as gas chromatography–mass spectrometry, high-performance liquid chromatography, nuclear magnetic resonance spectroscopy and advanced mass spectrometric methods have enabled the identification and quantification of key compounds. Major triterpenes such as betulin, betulinic and ursolic acids exhibit cytotoxic, anti-inflammatory and antimicrobial activities, whereas diarylheptanoids like platyphylloside display potent antiproliferative effects. Phenolic glycosides and flavonoid derivatives contribute to antioxidant and enzyme-modulating properties, often through activation of cellular defence pathways such as Nrf2 signalling. The combined evidence underscores the global significance of Betula phytochemistry for applications spanning oncology, dermatology, nutraceuticals and food preservation, highlighting the need for continued exploration of species diversity, extraction methods and bioactivity assays.

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Phytochemical Characterization of Betula Species publication trend

The graph below shows the total number of articles in phytochemical characterization of betula species across all publications each year (not limited to Nature Index journals).

Technical terms

Polyphenols: Plant metabolites with multiple phenolic rings known for antioxidant activity and free-radical scavenging.

Flavonoids: A subclass of polyphenols characterised by a 15-carbon skeleton; implicated in anti-inflammatory and cardioprotective effects.

Triterpenes: Thirty-carbon isoprenoid compounds found in plant resins and bark with diverse bioactivities, including cytotoxicity and antimicrobial action.

Diarylheptanoids: Phenolic secondary metabolites comprised of two aromatic rings linked by a seven-carbon chain, often exhibiting antiproliferative properties.

FT-ICR-MS: Fourier transform ion cyclotron resonance mass spectrometry, an ultrahigh-resolution technique for molecular identification.

HSCCC: High-speed counter-current chromatography, a preparative technique for separating bioactive compounds without a solid support phase.

References

1. Phytochemical Screening and Antioxidant Potential of Selected Extracts from Betula alba var. pendula Roth., Glycyrrhiza glabra L., and Avena sativa L.. Plants (2023).
2. Platyphylloside Isolated from Betula platyphylla is Antiproliferative and Induces Apoptosis in Colon Cancer and Leukemic Cells. Molecules (2019).
3. Cytotoxicity of Triterpene Seco-Acids from Betula pubescens Buds. Molecules (2019).