Results 91 to 100 of about 11,846 (190)

Spirocyclic Drimanes from the Marine Fungus Stachybotrys sp. Strain MF347 [PDF]

open access: yes, 2014
A novel spirocyclic drimane coupled by two drimane fragment building blocks 2 and a new drimane 1 were identified in mycelia and culture broth of Stachybotrys sp. MF347. Their structures were established by spectroscopic means.
Abdullah   +14 more
core   +2 more sources

Spectroscopic Methods of Edible Flower Authentication and Quality Control for Food Applications

open access: yeseFood, Volume 7, Issue 1, February 2026.
The global demand for edible flowers has increased. Issues such as incorrect species identification, flower product adulteration, contamination, and quality degradation necessitate the application of proper methods for authenticating and controlling the product's quality.
Fidele Benimana   +3 more
wiley   +1 more source

Dynamic Gelatin Hydrogels Crosslinked by Dithiolane‐Norbornene Click Chemistry

open access: yesMacromolecular Bioscience, Volume 26, Issue 2, February 2026.
Gelatin‐norbornene (GelNB) and poly(ethylene glycol)‐tetra‐lipoic acid (PEG4LA) are modularly photo‐crosslinked into gelatin‐based hydrogels with dynamically tunable mechanics for expansion and differentiation of induced pluripotent stem cells (iPSC). ABSTRACT Hydrogels prepared from gelatin are ideal for mimicking the extracellular matrix (ECM) owing ...
Favour O. Afolabi   +2 more
wiley   +1 more source

Polymerization of lignosulfonates by the laccase-HBT (1-hydroxybenzotriazole) system improves dispersibility [PDF]

open access: yes, 2010
The ability of laccases from Trametes villosa (TvL), Myceliophthora thermophila (MtL), Trametes hirsuta (ThL) and Bacillus subtilis (BsL) to improve the dispersion properties of calcium lignosulfonates 398 in the presence of HBT as a mediator was ...
Gellerstedt, G.   +19 more
core   +1 more source

Cost-effective FTIR and 1H NMR spectrometry used to screen valuable molecules extracted from selected West African trees by a sustainable biochar process

open access: yesScientific African, 2020
This study focused on wood extractives by a slow pyrolysis thermal extraction technique and screening of potentially valuable compounds from three African trees: Lophira lanceolata Tiegh. ex Keay., Dialium guineense Willd. and Afzelia africana Sm.
Ayobami Salami   +6 more
doaj   +1 more source

Structural and dynamic similarities of nanofibrils and microparticles of engineered spider silk proteins probed by solid‐state NMR spectroscopy

open access: yesProtein Science, Volume 35, Issue 2, February 2026.
Abstract Spider silks are proteinaceous fiber materials inspiring material design in various technical and biomedical fields due to their exceptional toughness, which exceeds that of most natural and artificial fibers. Solid‐state nuclear magnetic resonance (NMR) spectroscopy has been used herein to obtain insights into the structure and dynamics of ...
Nina Wehr   +6 more
wiley   +1 more source

Twists and Turns of Liquid Crystals Unravelled by Small‐Angle Scattering

open access: yesSmall Methods, Volume 10, Issue 3, 9 February 2026.
X‐ray scattering provides valuable insights into material structure and self‐assembly. This review discusses the use of small‐ and wide‐angle X‐ray scattering (SWAXS) as well as grazing incident SWAXS for examining self‐assembled systems, especially liquid crystals.
Jessie Wong   +2 more
wiley   +1 more source

Versatile and Selective Biomolecule Pulldown with Combinatorial DNA‐Crosslinked Polymers

open access: yesAngewandte Chemie International Edition, Volume 65, Issue 5, 28 January 2026.
We present a programmable smart polymer system for universal, sequence‐selective bioseparation under native conditions. Polymer phase separation is achieved through combinatorial DNA crosslinking, enabling the capture of DNA, RNA, or proteins in a homogeneous solution with high pulldown efficiency and near‐zero background binding.
Sarah K. Speed   +3 more
wiley   +1 more source

Mechanistic Study of Gold(I)-Catalyzed Intermolecular Hydroamination of Allenes [PDF]

open access: yes, 2010
The intermolecular hydroamination of allenes occurs readily with hydrazide nucleophiles, in the presence of 3-12% Ph_3PAuNTf_2. Mechanistic studies have been conducted to establish the resting state of the gold catalyst, the kinetic order of the reaction,
Benitez, Diego   +4 more
core   +1 more source

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