Chemical and antioxidant investigations: Norfolk pine needles (Araucaria excelsa)

Pharmaceutical Biology
Helana N MichaelPaul W Paré

Abstract

Chemical investigations from a foliar extract of Araucaria excelsa (Lamb.) (Araucariaceae) resulted in the identification of seven phenolic metabolites including one flavananol, one flavananol 3-O-glycoside, four C-glycoside flavonoids, and one phenolic acid. Structures were elucidated by spectral determination including: UV, NMR and MS analysis. Moderate antioxidant activity was observed with a 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay in comparison with the reference antioxidant ascorbic acid.

References

Jun 4, 1998·Journal of Natural Products·E J GamezA D Kinghorn

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Citations

May 1, 2020·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Poonam Kumari Patial, Damanjit Singh Cannoo
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Kanchan BhardwajKamil Kuča

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