Browsing by Author "Bertinetto, Carlo G."

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Automatic Baseline Recognition for the Correction of Large Sets of Spectra Using Continuous Wavelet Transform and Iterative Fitting
(2014) Bertinetto, Carlo G.; Vuorinen, Tapani
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Crystallite orientation maps in starch granules from polarized Raman spectroscopy (PRS) data
(2016) Galvis, Leonardo; Bertinetto, Carlo G.; Putaux, Jean Luc; Montesanti, Nicole; Vuorinen, Tapani
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
In this work, polarized Raman spectroscopy (PRS) was used to determine orientation maps of crystallites present in Phajus grandifolius starch granules based on the anisotropic response of the glycosidic Raman band at 865 cm−1. The response of this band was preliminarily evaluated using model A-amylose crystals as standard. The A‐amylose crystals oriented “in plane” showed a maximal intensity ratio of ∼3.0 for bands 865/1343 cm−1 when the polarization of the laser was along the chain axis of the crystal, i.e., parallel to the axis of the amylose double helices, and a minimal intensity ratio of ∼0.25 when perpendicular. The orientation maps of Phajus grandifolius starch granules showed two distinct regions: one isotropic and the other with a highly anisotropic response. The origin of the difference might be changes in both organization/concentration and orientation of the crystallites across the starch granules.
Influence of Pre-Processing and Distance on Spectral Classification: A Simulation Study
(2014) Bertinetto, Carlo G.; Vuorinen, Tapani
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Structural and chemical analysis of native and malted barley kernels by polarized Raman spectroscopy (PRS)
(2015) Galvis, Leonardo; Bertinetto, Carlo G.; Holopainen, Ulla; Tamminen, Tarja; Vuorinen, Tapani
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä