Thomas Rosenau
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High Glass Transition Epoxy Resins from Biobased Phloroglucinol and Unmodified Kraft Lignin Open
This study investigates the development of high-performance epoxy resins derived from potentially biobased phloroglucinol triglycidyl ether (TGPh) and unmodified Kraft lignin (KL), aiming to create thermoset materials from renewable resour…
X‐Ray Crystal Structures and Complete <sup>1</sup> H/ <sup>13</sup> C NMR Resonance Assignment of the 5‐HT4 Receptor Agonist BIMU8 and its Hydrochloride Open
BIMU8 ( N ‐[(1 R ,5 S )‐8‐methyl‐8‐azabicyclo[3.2.1]octan‐3‐yl]‐2‐oxo‐3‐propan‐2‐ylbenzimidazole‐1‐carboxamide) is an agonist of the 5‐HT4 receptor. This receptor is of clinical relevance since it affects several neurological processes, am…
Seedy bananas contain stilbenes that inhibit α-glucosidase and acetylcholinesterase Open
Seedy bananas are used as a traditional medicine in many Asian countries. Even though evidence for the presence of compounds with declared bioactivity in seedy bananas exists, direct assays to ascertain and identify bioactive compounds hav…
Diving into commercial cellulase formulations for circular polyester/cotton separation through targeted depolymerization of cotton Open
The rapid growth of the textile industry, driven by fast fashion trends, has significantly increased textile waste, particularly blends of polyester (PET) and cotton fibers, and efficient recycling of blended textiles requires effective fi…
Synthesis and Trapping of the Elusive Ortho-Iminoquinone Methide Derived from α-Tocopheramine and Comparison to the Case of α-Tocopherol Open
Tocopheramines are a class of antioxidants which are distinguished from tocopherols (vitamin E) by the presence of an amino group instead of the phenolic hydroxyl group. α-Tocopheramine is intensively studied for biomedical applications bu…
Elution revolution: Reversing chiral recognition by swapping d- for l-cellulose Open
Chirality is a fundamental feature involved in most biological processes. While it can be rather readily observed on the molecular or microscopic level, enantioselective interactions on the macroscopic level are not as well understood. We …
Seedy Banana – A Source of Stilbenes and Flavan-3-ols Open
This study aimed at identifying the bioactive compounds in the seeds of three seedy banana varietiesMusa acuminata, Musa itinerans, and Ensete glaucum. GC-MS of extracts and NMR of isolated compounds were used for the identification of the…
Similarity of solvent properties in self-organizing maps Open
Solvents are an essential part of liquid chromatography. For categorization, the diversity of solvent properties was captured in several different models. A meaningful description of solvent properties required models with more than two pa…
Cellulose acylation in aged 1-ethyl-3-methyl-imidazolium carboxylate ionic liquids upon fiber spinning Open
1,3-Dialkylimidazolium carboxylate ionic liquids (ILs) have recently undergone a surge of interest as media for spinning of cellulosic fibers. For 1-alkyl-3-methylimidazolium acetates, the acetylation of cellulose in the process of dope pr…
View article: Strong Association between Proanthocyanidins and Polysaccharides in the Cell Walls of Western Redcedar Bark
Strong Association between Proanthocyanidins and Polysaccharides in the Cell Walls of Western Redcedar Bark Open
The co-occurrence of polysaccharides and proanthocyanidins in the aqueous extracts of western redcedar (Thuja plicata Donn; WRC) bark limits their commercial utilization. To better understand their association, proanthocyanidins and polysa…
Chemical, microscopic, and mechanical properties of Mongolian <i>Haloxylon ammodendron</i> wood Open
Haloxylon ammodendron is a small psammophyte tree that grows under challenging environmental conditions in the Mongolian Gobi Desert. It plays a key role in sustaining the structure and function of the Gobi ecosystem, and it is a commodity…
Transformations of the cellulosic key chromophore 2,5-dihydroxy-[1,4]-benzoquinone in aqueous media Open
2,5-Dihydroxy-[1,4]-benzoquinone (DHBQ, 1 ) is an almost ubiquitous key chromophore in cellulosic materials that underwent aging processes (yellowing/brightness reversion). While cellulosic fibers containing DHBQ kept under dry conditions …
Covalent anchoring of a cellulose per(phenyl carbamate) chiral selector onto silica gel through alkyne-azide click chemistry and its utilization in HPLC Open
High-performance liquid chromatography is a powerful tool for enantioseparation, based on chiral stationary phases as separation media. Cellulose-based chiral selectors are among the most successful ones used for the preparation of chiral …
Blue beyond time: preservation properties of natural and synthetic indigo in cellulose aging Open
Historical cotton-based objects containing traces of the natural blue dye indigo are known to remain well preserved over prolonged periods of time. Owing to the great photostability of the dye itself, the stability of indigo-treated cotton…
View article: Key insights into TEMPO-mediated oxidation of cellulose: influence of starting material
Key insights into TEMPO-mediated oxidation of cellulose: influence of starting material Open
The present study investigates the intricate relationships between the properties of cellulose nanomaterials (CNMs) and the lignocellulosic feedstocks from which they are derived. The starting pulps, consisting of eucalyptus, pine, hemp, a…
Influence of dialcohol cellulose moieties on the properties of cellulosic fibers prepared by the Ioncell® process Open
Recent research shows increased interest in periodate oxidation of cellulose combined with subsequent derivatization to broaden the applications of cellulosic materials. This study attempts to apply this modification strategy to alter the …
Electron-beaming of cellulose solutions in 3-alkyl-1-methylimidazolium acetate ionic liquids: side reactions of the acetate anions Open
A combination of swelling in imidazolium-type ionic liquids (ILs) and beta-irradiation, used in biomass pretreatments, is not an inert procedure but involves some unexpected side reactions. Beta-irradiation of cellulose dissolved in the io…
A Facile, Sustainable One-Pot Synthesis of the Spiro-Dimers of α-Tocopheramine and Its N-Methyl Derivative Open
α-Tocopheramine and N-methyl-α-tocopheramine are used as stabilizers in the spinning of cellulosic fibers from solutions in 1,3-dialkylimidazolium ionic liquids. Upon aging, they form chromophoric degradation products, among which the spir…
Flexible Biobased Thermosets from Epoxidized Plant Oils: A Study of Aliphatic Cross-Linking Agents Open
This study investigates the preparation of flexible biobased thermosets by cross-linking epoxidized linseed oil (ELO) with three different hardeners: hexamethylene diamine (HMDA), bis(hexamethylene)triamine (BHMT), and sebacic acid. In a c…
Advanced Characterization of Lignin Nanoparticles by Asymmetric Flow‐Field Flow Fractionation Open
The unique properties of lignin nanoparticles (LNPs) – uniform shape, surface charge and nanoscale – carry great potential for the desired material utilization of technical lignins. Especially, the particle size distribution and dispersity…
Visualising Analytes in Gas Chromatography by Staining and Substance Maps Open
Chromatographic separations in combination with spectroscopic detectors are a main pillar of today's analytical chemistry. The recorded spectroscopic data is usually not shown in a typical chromatogram, therefore the contained additional i…
Enhanced Characterization of Lignin Nanoparticles by Asymmetric Flow-Field Flow Fractionation Open
The unique properties of lignin nanoparticles (LNPs)—uniform shape, surface properties and nanoscale—carry great potential for the desired material utilization of technical lignins. Especially, the particle size distribution and dispersity…
View article: Genetic Diversity, Chemical Constituents, and Bioactivities of Maerua siamensis from Thailand
Genetic Diversity, Chemical Constituents, and Bioactivities of Maerua siamensis from Thailand Open
The genus Maerua (Capparaceae) comprises 85 woody species distributed across the paleotropics, with some species used in traditional medicine. This study investigated the phylogenetic placement, genetic diversity, and phytochemical composi…
Negative effect and removal of trace amounts of 1,3-dialkylimidazolium ionic liquids in samples from biorefineries Open
Ionic liquids (ILs), based on 1,3-dialkylimidazolium cations, are frequently used solvent components or auxiliaries for various types of biomass in biorefinery approaches. Unless washing and sample preparation have been carried out very ca…