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13 Results Found

  • Article
  • Open Access
55 Citations
8,157 Views
13 Pages

Depolymerization of Fucosylated Chondroitin Sulfate with a Modified Fenton-System and Anticoagulant Activity of the Resulting Fragments

  • Jun-hui Li,
  • Shan Li,
  • Zi-jian Zhi,
  • Lu-feng Yan,
  • Xing-qian Ye,
  • Tian Ding,
  • Lei Yan,
  • Robert John Linhardt and
  • Shi-guo Chen

21 September 2016

Fucosylated chondroitin sulfate (fCS) from sea cucumber Isostichopus badionotus (fCS-Ib) with a chondroitin sulfate type E (CSE) backbone and 2,4-O-sulfo fucose branches has shown excellent anticoagulant activity although has also show severe adverse...

  • Article
  • Open Access
19 Citations
3,364 Views
12 Pages

Lignin Structural Characterization and Its Antioxidant Potential: A Comparative Evaluation by EPR, UV-Vis Spectroscopy, and DPPH Assays

  • Tina Ročnik Kozmelj,
  • Maxim A. Voinov,
  • Miha Grilc,
  • Alex I. Smirnov,
  • Edita Jasiukaitytė-Grojzdek,
  • Lucian Lucia and
  • Blaž Likozar

21 August 2024

The natural aromatic polymer lignin and its lignin-like oligomeric fragments have attracted attention for their antioxidant capacity and free radical scavenging activities. In this study, a 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay was employed to a...

  • Feature Paper
  • Article
  • Open Access
15 Citations
3,771 Views
15 Pages

Characterization of New Oligosaccharides Obtained by An Enzymatic Cleavage of the Exopolysaccharide Produced by the Deep-Sea Bacterium Alteromonas infernus Using its Cell Extract

  • Katy Akoumany,
  • Agata Zykwinska,
  • Corinne Sinquin,
  • Laëtitia Marchand,
  • Mathieu Fanuel,
  • David Ropartz,
  • Hélène Rogniaux,
  • Muriel Pipelier,
  • Christine Delbarre-Ladrat and
  • Sylvia Colliec-Jouault

22 September 2019

Bacteria from deep-sea hydrothermal vents constitute an attractive source of bioactive molecules. In particular, exopolysaccharides (EPS) produced by these bacteria become a renewable source of both biocompatible and biodegradable molecules. The low...

  • Review
  • Open Access
179 Citations
25,754 Views
23 Pages

Engineering Plant Biomass Lignin Content and Composition for Biofuels and Bioproducts

  • Cassie Marie Welker,
  • Vimal Kumar Balasubramanian,
  • Carloalberto Petti,
  • Krishan Mohan Rai,
  • Seth DeBolt and
  • Venugopal Mendu

27 July 2015

Lignin is an aromatic biopolymer involved in providing structural support to plant cell walls. Compared to the other cell wall polymers, i.e., cellulose and hemicelluloses, lignin has been considered a hindrance in cellulosic bioethanol production du...

  • Article
  • Open Access
34 Citations
4,430 Views
16 Pages

Biophysico-Chemical Properties of Alginate Oligomers Obtained by Acid and Oxidation Depolymerization

  • Anna Zimoch-Korzycka,
  • Dominika Kulig,
  • Żaneta Król-Kilińska,
  • Barbara Żarowska,
  • Łukasz Bobak and
  • Andrzej Jarmoluk

9 July 2021

The aim of the study was to obtain alginate oligosaccharides by using two degradation methods of sodium alginate (SA): with hydrochloric acid (G—guluronate, M—mannuronate and G + M fractions) and hydrogen peroxide (HAS—hydrolyzed SA), in order to ass...

  • Article
  • Open Access
6 Citations
2,847 Views
19 Pages

8 December 2023

A sulfated polysaccharide (AG) was extracted and isolated from the sea cucumber H. fuscopunctata, consisting of GlcNAc, GalNAc, Gal, Fuc and lacking any uronic acid residues. Importantly, several chemical depolymerization methods were used to elucida...

  • Article
  • Open Access
5 Citations
1,946 Views
19 Pages

Gamma Irradiation for Agrifood: Non-Destructive Approaches to Study the Secondary Effects Produced in Italian Wheat Matrices

  • Rocco Carcione,
  • Leonardo Lanzetta,
  • Beatrice D’Orsi,
  • Ilaria Di Sarcina,
  • Emiliana Mansi,
  • Jessica Scifo and
  • Alessia Cemmi

This work investigates the effects of gamma irradiation (0.1–10 kGy) on four Italian wheat matrices, such as durum, conventional soft, integrated soft, and biological soft wheat, by coupling Raman, FTIR-ATR and EPR spectroscopies to provide com...

  • Article
  • Open Access
2 Citations
1,876 Views
31 Pages

Lignin, a complex aromatic biopolymer abundant as waste in biorefineries and the pulp and paper industry, holds significant potential for valorization. This study presents the oxidative depolymerization of Lignoboost lignin (LB) using H2O2 under mild...

  • Article
  • Open Access
24 Citations
6,465 Views
15 Pages

Understanding the Effect of Side Reactions on the Recyclability of Furan–Maleimide Resins Based on Thermoreversible Diels–Alder Network

  • Brandon T. McReynolds,
  • Kavon D. Mojtabai,
  • Nicole Penners,
  • Gaeun Kim,
  • Samantha Lindholm,
  • Youngmin Lee,
  • John D. McCoy and
  • Sanchari Chowdhury

23 February 2023

We studied the effect of side reactions on the reversibility of epoxy with thermoreversible Diels–Alder (DA) cycloadducts based on furan and maleimide chemistry. The most common side reaction is the maleimide homopolymerization which introduces...

  • Article
  • Open Access
13 Citations
3,973 Views
14 Pages

Selective Enzymatic Esterification of Lignin-Derived Phenolics for the Synthesis of Lipophilic Antioxidants

  • Marta Martinez-Garcia,
  • Jaime Gracia-Vitoria,
  • Karolien Vanbroekhoven,
  • Winnie Dejonghe and
  • Yamini Satyawali

Lignin is an abundant and renewable source of phenolic compounds that can be used as natural antioxidants to substitute synthetic, petroleum-based alternatives. The development of lignin depolymerization techniques has improved the accessibility of l...

  • Article
  • Open Access
115 Citations
6,534 Views
16 Pages

Degradation of Four Major Mycotoxins by Eight Manganese Peroxidases in Presence of a Dicarboxylic Acid

  • Xiaolu Wang,
  • Xing Qin,
  • Zhenzhen Hao,
  • Huiying Luo,
  • Bin Yao and
  • Xiaoyun Su

27 September 2019

Enzymatic treatment is an attractive method for mycotoxin detoxification, which ideally prefers the use of one or a few enzymes. However, this is challenged by the diverse structures and co-contamination of multiple mycotoxins in food and feed. Ligni...

  • Article
  • Open Access
9 Citations
3,434 Views
23 Pages

Marine Exopolysaccharide Complexed With Scandium Aimed as Theranostic Agents

  • Mattia Mazza,
  • Cyrille Alliot,
  • Corinne Sinquin,
  • Sylvia Colliec-Jouault,
  • Pascal E. Reiller and
  • Sandrine Huclier-Markai

20 February 2021

(1) Background: Exopolysaccharide (EPS) derivatives, produced by Alteromonas infernus bacterium, showed anti-metastatic properties. They may represent a new class of ligands to be combined with theranostic radionuclides, such as 47Sc/44Sc. The goal o...

  • Article
  • Open Access
551 Views
26 Pages

Specific Phenylpropanoid Oligomerization in a Neutral Environment by the Recombinant Alkaline Laccase from Paramyrothecium roridum VKM F-3565

  • Zhanna V. Renfeld,
  • Alexey M. Chernykh,
  • Sofia Yu. Gorina,
  • Boris P. Baskunov,
  • Olga V. Moiseeva,
  • Natalia V. Trachtmann,
  • Shamil Z. Validov and
  • Marina P. Kolomytseva

11 October 2025

Fungal laccases oxidize a wide range of substrates with a diverse spectrum of subsequent non-specific free radical reactions, leading to the production of unwanted byproducts. This work describes a unique recombinant alkaliphilic laccase from Paramyr...