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Tautomerism and Fragmentation of Biologically Active Hetero Atom (O, N)-Containing Acyclic and Cyclic Compounds Under Electron Ionization
(Turun yliopistoAnnales Universitatis Turkuensis A I 392, 2009-04-17)
In this thesis a total of 86 compounds containing the hetero atoms oxygen and nitrogen were studied under electron ionization mass spectrometry (EIMS). These compounds are biologically active and were synthesized by various ...
Ellagitannins in Finnish plant species – Characterization, distribution and oxidative activity
(Turun yliopistoAnnales Universitatis Turkuensis A I 518, 2015-06-17)
Ellagitannins are secondary metabolites that are produced by plants. Among other features, they are assumed to function as plants’ defensive compounds against plant-eating herbivores. This thesis focuses on a theory, which ...
Frequency-Domain and Wide-Pulse Time-Domain Measurements of Lanthanide Luminescence and Lanthanide-Based Resonance Energy Transfer
(Turun yliopistoAnnales Universitatis Turkuensis A I 436, 2012-02-10)
Resonance energy transfer (RET) is a non-radiative transfer of the excitation energy from the initially excited luminescent donor to an acceptor. The requirements for the resonance energy transfer are: i) the spectral ...
Phenolics of the Inner Bark of Silver Birch: Characterization and Intraspecific Variation
(Turun yliopistoAnnales Universitatis Turkuensis A I 477, 2013-12-13)
This thesis describes work related to the in-depth characterization of the phenolic compounds of silver birch (Betula pendula) inner bark. Phenolic compounds are the most ubiquitous class of plant secondary compounds. The ...
NIR-Vis Up-Conversion Luminescence in the Yb3+,Er3+ Doped Y2O2S, ZrO2, and NaYF4 Nanomaterials
(Turun yliopistoAnnales Universitatis Turkuensis A I 502, 2014-12-16)
Since the discovery of the up-conversion phenomenon, there has been an ever increasing interest in up-converting phosphors in which the absorption of two or more low energy photons is followed by emission of a higher energy ...
Halogen hectorites : smectites designed to luminesce
(Turun yliopisto, 2017-12-15)
The smectites represent a versatile class of clay minerals, offering possibilities of applications in several industrial and scientific fields. The hectorite belongs to this class, but it has the advantage of production ...
Oligomeric Ellagitannins of Epilobium Angustifolium : Quantification and Bioactivity Assessment
(Turun yliopistoAnnales Universitatis Turkuensis A I 564, 2017-08-18)
Over the past few years there has been a growing body of evidence highlighting the fact that tannin-rich fodders could be beneficial to animal welfare as well as to the environment, by decreasing methane emissions from ...
Prodrug strategies of antiviral nucleotides: Studies on enzymatically and thermally removable phosphate protecting groups
(Turun yliopistoTurun yliopiston julkaisuja - Annales Universitatis Turkuensis. Sarja - ser. AI osa - tom. 522, 2015-09-18)
Antiviral nucleosides are compounds that are used against viruses, such as human immunodeficiency virus (HIV) and hepatitis C virus (HCV). To act as therapeutic agent, the antiviral nucleoside needs to be phosphorylated ...
Lanthanide doped NaYF4 up-conversion luminescence materials
(Turun yliopistoAnnales Universitatis Turkuensis A I 550, 2016-12-14)
The thesis includes literature and experimental parts. The first part introduces the reader to the topic while the later part contains synthesis and characterization details, results and publications. Up-conversion (UPC) ...
Understanding the bioactivity of plant tannins: developments in analysis methods and structure-activity studies
(Turun yliopistoAnnales Universitatis Turkuensis A I 540, 2016-06-17)
Tannins, typically segregated into two major groups, the hydrolyzable tannins (HTs) and the proanthocyanidins (PAs), are plant polyphenolic secondary metabolites found throughout the plant kingdom. On one hand, tannins may ...