scholarly journals A modular esterase from Penicillium funiculosum which releases ferulic acid from plant cell walls and binds crystalline cellulose contains a carbohydrate binding module

2000 ◽  
Vol 267 (23) ◽  
pp. 6740-6752 ◽  
Author(s):  
Paul A. Kroon ◽  
Gary Williamson ◽  
Neville M. Fish ◽  
David B. Archer ◽  
Nigel J. Belshaw
Keyword(s):  
Ferulic Acid ◽  
Plant Cell ◽  
Cell Walls ◽  
Crystalline Cellulose ◽  
Carbohydrate Binding ◽  
Carbohydrate Binding Module ◽  
Penicillium Funiculosum ◽  
Plant Cell Walls

scholarly journals New Products Generated from the Transformations of Ferulic Acid Dilactone

Biomolecules ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 175 ◽  
Author(s):  
Ying He ◽  
Yuan Jia ◽  
Fachuang Lu
Keyword(s):  
Ferulic Acid ◽  
Succinic Acid ◽  
Plant Cell ◽  
Cell Walls ◽  
New Products ◽  
Plant Cell Walls ◽  
Reaction Conditions ◽  
Radical Coupling ◽  
Naoh Treatment ◽  
Derivatives Of

Various ferulic acid (FA) dimers occurring in plant cell walls, such as 8-5-, 8-O-4-, 5-5-, and 8-8-coupled dimers, are effective antioxidants and potential antimicrobials. It is necessary to access these diferulates as reference compounds to validate those isolated from plants. 3,6-bis(4-hydroxy-3-methoxyphenyl)-tetrahydrofuro-[3,4-c]furan-1,4-dione, a 8-8-coupled FA dilactone generated from ferulic acid via radical coupling, has been used to synthesize 8-8-coupled FA dimers although few reports investigated the distribution of products and mechanisms involved in the transformation of FA dilactone. In this work, the FA dilactone, obtained from FA by a peroxidase-catalyzed radical coupling, was reacted under various base/acid conditions. Effects of reaction conditions and workup procedures on the distribution of products were investigated by GC-MS. The isolated products from such treatments of FA dilactone were characterized by NMR. New derivatives of FA dimer including 2-(4-hydroxy-3-methoxybenzylidene)-3-(hydroxyl-(4-hydroxy-3-methoxyphenyl)methyl)succinic acid and 2-(bis(4-hydroxy-3-methoxyphenyl)-methyl)-succinic acid were produced from NaOH treatment. Another novel 8-8-coupled cyclic FA dimer, diethyl 6-hydroxy-1-(4-hydroxy-3-methoxyphenyl)-7-methoxy-1,2-dihydronaphthalene-2,3-dicarboxylate was identified in products from FA dilactone treated by dry HCl in absolute ethanol. Mechanisms involved in such transformations were proposed.

Plant cell walls to ethanol

2012 ◽  
Vol 442 (2) ◽  
pp. 241-252 ◽  
Author(s):  
Douglas B. Jordan ◽  
Michael J. Bowman ◽  
Jay D. Braker ◽  
Bruce S. Dien ◽  
Ronald E. Hector ◽  
...  
Keyword(s):  
Plant Cell ◽  
Cell Walls ◽  
Second Generation ◽  
Consolidated Bioprocessing ◽  
Enzymatic Saccharification ◽  
Crystalline Cellulose ◽  
Plant Cell Walls ◽  
Second Generation Bioethanol ◽  
Single Organism ◽  
The Cost

Conversion of plant cell walls to ethanol constitutes second generation bioethanol production. The process consists of several steps: biomass selection/genetic modification, physiochemical pretreatment, enzymatic saccharification, fermentation and separation. Ultimately, it is desirable to combine as many of the biochemical steps as possible in a single organism to achieve CBP (consolidated bioprocessing). A commercially ready CBP organism is currently unreported. Production of second generation bioethanol is hindered by economics, particularly in the cost of pretreatment (including waste management and solvent recovery), the cost of saccharification enzymes (particularly exocellulases and endocellulases displaying kcat ~1 s−1 on crystalline cellulose), and the inefficiency of co-fermentation of 5- and 6-carbon monosaccharides (owing in part to redox cofactor imbalances in Saccharomyces cerevisiae).

Selective Detection of Crystalline Cellulose in Plant Cell Walls with Sum-Frequency-Generation (SFG) Vibration Spectroscopy

2011 ◽  
Vol 12 (7) ◽  
pp. 2434-2439 ◽  
Author(s):  
Anna L. Barnette ◽  
Laura C. Bradley ◽  
Brandon D. Veres ◽  
Edward P. Schreiner ◽  
Yong Bum Park ◽  
...  
Keyword(s):  
Plant Cell ◽  
Cell Walls ◽  
Sum Frequency Generation ◽  
Crystalline Cellulose ◽  
Selective Detection ◽  
Plant Cell Walls ◽  
Sum Frequency ◽  
Vibration Spectroscopy ◽  
Frequency Generation

The chemical composition of glochids from Opuntia

1976 ◽  
Vol 54 (1-2) ◽  
pp. 173-176 ◽  
Author(s):  
Hayden N. Pritchard ◽  
James A. Hall
Keyword(s):  
Chemical Composition ◽  
Calcium Oxalate ◽  
Plant Cell ◽  
Cell Walls ◽  
Crystalline Cellulose ◽  
Plant Cell Walls ◽  
Infrared Spectrophotometry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Pure Cellulose

Glochids of two species of cactus were analyzed using infrared spectrophotometry and x-ray diffraction to determine their chemical constituency. The results were compared with calcium oxalate, a known constituent of many plant crystals, and with pure cellulose, the major component of plant cell walls. The analysis showed the glochids to be pure crystalline cellulose.

scholarly journals Carbohydrate-binding modules promote the enzymatic deconstruction of intact plant cell walls by targeting and proximity effects

2010 ◽  
Vol 107 (34) ◽  
pp. 15293-15298 ◽  
Author(s):  
C. Herve ◽  
A. Rogowski ◽  
A. W. Blake ◽  
S. E. Marcus ◽  
H. J. Gilbert ◽  
...  
Keyword(s):  
Plant Cell ◽  
Cell Walls ◽  
Proximity Effects ◽  
Intact Plant ◽  
Carbohydrate Binding ◽  
Plant Cell Walls ◽  
Carbohydrate Binding Modules
Sign in / Sign up

Export Citation Format

Share Document