Results 1 to 10 of about 150,716 (298)

Sources and transformations of dissolved lignin phenols and chromophoric dissolved organic matter in Otsuchi Bay, Japan [PDF]

Frontiers in Marine Science, 2016
Dissolved lignin phenols and optical properties of dissolved organic matter (DOM) were measured to investigate the sources and transformations of terrigenous DOM (tDOM) in Otsuchi Bay, Japan.
Chia-Jung eLu, Ronald eBenner, Ronald eBenner, Cedric G. Fichot, Hideki eFukuda, Youhei eYamashita, Hiroshi eOgawa   +6 more
doaj   +2 more sources

Pyrolysis of lignin for phenols with alkaline additive

Fuel Processing Technology, 2014
This study is devoted to investigating the effect of alkaline additives on lignin pyrolysis for producing phenols. The effects of different types and amounts of alkaline additives, i.e., 0-20 wt.% NaOH, KOH, Na2CO3 or K2CO3, on lignin pyrolysis were tested in a fixed bed reactor.
Cuina Peng, Guangwen Xu, Guangyi Zhang   +2 more
exaly   +2 more sources

Formation of p-Unsubstituted Phenols in Base-catalyzed Lignin Depolymerization [PDF]

MATEC Web of Conferences, 2021
Lignin valorization is one of the biggest challenges for developing biomass-based chemical industry. Recent innovative works has enabled depolymerization of lignin to the monomers with the yield close to theoretical maximum. The main product is a mixture
Kudo Shinji, Honda Eriko, Nishioka Shingo, Hayashi Jun-ichiro   +3 more
doaj   +1 more source

Enzyme Activities in the Lignin Metabolism of Chinese Olive (Canarium album) with Different Flesh Characteristics

Horticulturae, 2022
Lignin is crucial to the formation of fruit texture quality. Here, we aimed to explore the relationship between lignin metabolism and fruit texture by investigating the lignin content, total phenols and their related enzyme activities among three Chinese
Jie Wang, Jingrong Cai, Junyue Zhao, Zhixiong Guo, Tengfei Pan, Yuan Yu, Wenqin She   +6 more
doaj   +1 more source

Effects of Alcell Lignin Methylolation and Lignin Adding Stage on Lignin-Based Phenolic Adhesives [PDF]

Molecules, 2021
To investigate the effects of lignin methylolation and lignin adding stage on the resulted lignin-based phenolic adhesives, Alcell lignin activated with NaOH (AL) or methylolation (ML) was integrated into the phenolic adhesives system by replacing phenol at various adhesive synthesis stages or directly co-polymerizing with phenolic adhesives.
Xianbin Ai, Shanghuan Feng, Tao Shui, Himant Kakkar, Chunbao Charles Xu   +4 more
openaire   +3 more sources

Phenolic Hydroxyl Groups in the Lignin Polymer Affect the Formation of Lignin Nanoparticles [PDF]

Nanomaterials, 2021
Alkaline soda lignin (AL) was sequentially fractionated into six fractions of different molecular size by means of solvent extraction and their phenolic hydroxyl groups were chemoselectively methylated to determine their effect on nanoparticle formation of lignin polymers.
Jae Hoon Lee, Tae Min Kim, In-Gyu Choi, Joon Weon Choi   +3 more
openaire   +3 more sources

Lignin Hydrogenolysis: Phenolic Monomers from Lignin and Associated Phenolates across Plant Clades

ACS Sustainable Chemistry & Engineering, 2023
The chemical complexity of lignin remains a major challenge for lignin valorization into commodity and fine chemicals. A knowledge of the lignin features that favor its valorization and which plants produce such lignins can be used in plant selection or to engineer them to produce lignins that are more ideally suited for conversion.
Mingjie Chen, Yanding Li, Fachuang Lu, Jeremy S. Luterbacher, John Ralph   +4 more
openaire   +2 more sources

Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic: comparison of hydrolyzable components with plant wax lipids and lignin phenols [PDF]

Biogeosciences, 2015
Hydrolyzable organic carbon (OC) comprises a significant component of sedimentary particulate matter transferred from land into oceans via rivers. Its abundance and nature are however not well studied in Arctic river systems, and yet may represent an ...
X. Feng, Ö. Gustafsson, R. M. Holmes, J. E. Vonk, B. E. van Dongen, I. P. Semiletov, O. V. Dudarev, M. B. Yunker, R. W. Macdonald, D. B. Montluçon, T. I. Eglinton   +10 more
doaj   +1 more source

Limitation of lignin derivatives as biomarkers of land derived organic matter in the coastal marine sediments

Oceanologia, 2020
Summary: Lignin oxidation products (vanillyl, syringil and cummaryl phenols), and δ13C were measured in a variety of land and marine samples collected in Inner Puck Bay – dominated by marine vascular plants, small river run-off, and shallow bottom, and ...
Janusz Pempkowiak
doaj   +1 more source

Lignin phenols as a basis for biopreparations

Journal of the Belarusian State University. Biology, 2021
The content and composition of lignin phenols in plants and soils of latitudinal zones and vertical natural zones of the North Caucasus and Northwest Tien Shan have been studied. The special role of lignin phenols of underground plant organs in the process of humification was revealed.
Ivan V. Kovalev, Natalia O. Kovaleva
openaire   +2 more sources