Wydział Chemii

Sylwester Mazurek

Maciej Włodarczyk

Sonia Pielorz

Piotr Okińczyc

Piotr M. Kuś

Gabriela Długosz

Diana Vidal-Yañez

Roman Szostak

2022

Molecules

27

3954/1-3954/16

10.3390/molecules27123954

Naukowa

Angielski

Artykuł

Poplar bark and leaves can be an attractive source of salicylates and other biologically
active compounds used in medicine. However, the biochemical variability of poplar material requires
a standardization prior to processing. The official analytical protocols used in the pharmaceutical
industry rely on the extraction of active compounds, which makes their determination long and costly.
An analysis of plant materials in their native state can be performed using vibrational spectroscopy.
This paper presents for the first time a comparison of diffuse reflectance in the near- and mid-infrared
regions, attenuated total reflection, and Raman spectroscopy used for the simultaneous determination
of salicylates and flavonoids in poplar bark and leaves. Based on 185 spectra of various poplar species
and hybrid powdered samples, partial least squares regression models, characterized by the relative
standard errors of prediction in the 4.5–9.9% range for both calibration and validation sets, were
developed. These models allow for fast and precise quantification of the studied active compounds
in poplar bark and leaves without any chemical sample treatment

poplar, salicylates, flavonoids, multivariate analysis, vibrational spectroscopy

CC-BY

http://dx.doi.org/10.3390/molecules27123954

http://www.mdpi.com/journal/metals