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You searched for: Publication Year 2019 Remove constraint Publication Year: 2019 Subject Humicola insolens Remove constraint Subject: Humicola insolens Subject catalytic activity Remove constraint Subject: catalytic activity
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1. Immobilized feruloyl esterase from Humicola insolens catalyzes the synthesis of feruloylated oligosaccharides

Author:
Juan Tamayo-Cabezas; Salwa Karboune
Source:
Process biochemistry 2019 v.79 pp. 81-90
ISSN:
1359-5113
Subject:
Humicola insolens; acylation; catalytic activity; emulsions; epoxides; ferulic acid; feruloyl esterase; magnetism; microparticles; nanoparticles; raffinose; substrate specificity
Abstract:
... Ferulic acid acylation of oligosaccharides catalyzed by feruloyl esterases (FAE) is a promising route to produce feruloylated oligosaccharides. However, modulation of FAE synthetic properties is a key step to improve the acylation. The efficiency of H. insolens FAE to catalyze the feruloylation in six different surfactantless microemulsions reaction systems was evaluated. The highest yield (57%) w ...
DOI:
10.1016/j.procbio.2018.12.013

2. Polysaccharide monooxygenase-catalyzed oxidation of cellulose to glucuronic acid-containing cello-oligosaccharides

Author:
Jinyin Chen; Xiuna Guo; Min Zhu; Chen Chen; Duochuan Li
Source:
Biotechnology for biofuels 2019 v.12 no.1 pp. 42
ISSN:
1754-6834
Subject:
Humicola insolens; Komagataella pastoris; beta-glucosidase; beta-glucuronidase; catalytic activity; cellulose; genes; glucose; glucuronic acid; hydrolysis; moieties; oligosaccharides; oxidation
Abstract:
... BACKGROUND: Polysaccharide monooxygenases (PMOs) play an important role in the enzymatic degradation of cellulose. They have been demonstrated to able to C6-oxidize cellulose to produce C6-hexodialdoses. However, the biological function of C6 oxidation of PMOs remains unknown. In particular, it is unclear whether C6-hexodialdoses can be further oxidized to uronic acid (glucuronic acid-containing o ...
DOI:
10.1186/s13068-019-1384-0
PubMed:
30858879
PubMed Central:
PMC6391835

3. Switched reaction specificity in polyesterases towards amide bond hydrolysis by enzyme engineering

Author:
Antonino Biundo; Raditya Subagia; Michael Maurer; Doris Ribitsch; Per-Olof Syrén; Georg M. Guebitz
Source:
RSC advances 2019 v.9 no.62 pp. 36217-36226
ISSN:
2046-2069
Subject:
Humicola insolens; Thermobifida; amidase; amides; biocatalysts; catalytic activity; cutinase; depolymerization; engineering; enzyme activity; hydrogen bonding; hydrolysis; microplastics; molecular dynamics; nylon; polyamides; polyethylene terephthalates; recycling
Abstract:
... The recalcitrance of plastics like nylon and other polyamides contributes to environmental problems (e.g. microplastics in oceans) and restricts possibilities for recycling. The fact that hitherto discovered amidases (EC 3.5.1. and 3.5.2.) only show no, or low, activity on polyamides currently obstructs biotechnological-assisted depolymerization of man-made materials. In this work, we capitalized ...
DOI:
10.1039/c9ra07519d