Journal ArticleDOI
pKa-Values of Guaiacyl and Syringyl Phenols Related to Lignin
TLDR
In this paper, the pKa -values of a number of guaiacyl, syringyl and other phenols related to lignin have been determined using a spectrophotometric method combined with multivariate evaluation.Citations
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Journal ArticleDOI
Inhibition of ethanol-producing yeast and bacteria by degradation products produced during pre-treatment of biomass.
TL;DR: The inhibitory effect on ethanol production by yeast and bacteria is presented and the inhibition of volumetric ethanol productivity was found to depend on the amount of methoxyl substituents and hence hydrophobicity (log P).
Journal ArticleDOI
A Review of the Antioxidant Mechanisms of Polyphenol Compounds Related to Iron Binding
TL;DR: In this review, primary attention is given to the antioxidant (and prooxidant) activity of polyphenols arising from their interactions with iron both in vitro and in vivo.
Book ChapterDOI
Chapter One – Mineral–Organic Associations: Formation, Properties, and Relevance in Soil Environments
Markus Kleber,Karin Eusterhues,Marco Keiluweit,Christian Mikutta,Robert Mikutta,Peter S. Nico +5 more
TL;DR: An overview of the current knowledge on mineral-organic associations can be found in this article, where the authors identify key questions and future research needs, as well as a survey of the existing research work.
Journal ArticleDOI
Lignin-derived compounds as efficient laccase mediators for decolorization of different types of recalcitrant dyes.
TL;DR: Phenolic aldehydes, ketones, acids, and esters related to the three lignin units were among the best mediators, including p-coumaric acid, vanillin, acetovanillone, methyl vanillate, and above all, syringaldehyde and acetosyringone, which are especially promising as ecofriendly (and potentially cheap) mediators for industrial applications.
Journal ArticleDOI
In Posidonia oceanica cadmium induces changes in DNA methylation and chromatin patterning
TL;DR: The data demonstrate that Cd perturbs the DNA methylation status through the involvement of a specific methyltransferase, linked to nuclear chromatin reconfiguration likely to establish a new balance of expressed/repressed chromatin.
References
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Journal ArticleDOI
Dissociation constants and lipophilicity of catecholamines and related compounds.
F. Mack,H. Bönisch +1 more
TL;DR: The lipophilicity of the metabolites of noradrenaline was correlated with the rate constants for efflux of these metabolites from peripheral organs, and the pKa1 values of phenolic amines were more influenced by the introduction of hydrophilic groups than by lipophilic groups.
Journal ArticleDOI
Voltammetric evaluation of the effective acidities (pKa') for Brønsted acids in aprotic solvents
Journal ArticleDOI
Determination of equilibrium constants by chemometric analysis of spectroscopic data
TL;DR: In this article, a method to determine equilibrium constants with high accuracy from spectroscopic titrations is described, which is based on a decomposition of the recorded spectra into a product of target and projection matrices using NIPALS.
Journal ArticleDOI
Substrate specificity of flavin-dependent vanillyl-alcohol oxidase from Penicillium simplicissimum. Evidence for the production of 4-hydroxycinnamyl alcohols from 4-allylphenols.
TL;DR: P pH-dependent binding studies suggest that vanillyl-alcohol oxidase preferentially binds the phenolate form of isoeugenol (pKa < 6, 25 degrees C).