scholarly journals Correction to: Agarotetrol: a source compound for low molecular weight aromatic compounds from agarwood heating

2019 ◽  
Vol 73 (3) ◽  
pp. 685-685
Author(s):  
Sakura Takamatsu ◽  
Michiho Ito
Keyword(s):  
Molecular Weight ◽  
Aromatic Compounds ◽  
Low Molecular Weight

scholarly journals Effect of WC/Ni–Cr additive on changes in the composition of an atmospheric residue in the course of cracking

2019 ◽  
Vol 17 (2) ◽  
pp. 499-508 ◽  
Author(s):  
Galina S. Pevneva ◽  
Natalya G. Voronetskaya ◽  
Nikita N. Sviridenko ◽  
Anatoly K. Golovko
Keyword(s):  
Molecular Weight ◽  
Tungsten Carbide ◽  
Aromatic Hydrocarbons ◽  
Aromatic Compounds ◽  
Low Molecular Weight ◽  
Nickel Chromium ◽  
Atmospheric Residue ◽  
Sulfur Containing ◽  
Catalytic Additive ◽  
Sulfur Containing Compounds

AbstractThe paper presents the results of investigation of changes in the composition of hydrocarbons and sulfur-containing compounds of an atmospheric residue in the course of cracking in the presence of a tungsten carbide–nickel–chromium (WC/Ni–Cr) catalytic additive and without it. The cracking is carried out in an autoclave at 500 °C for 30 min. The addition of the WC/Ni–Cr additive promotes the deepening of reactions of destruction not only of resins and asphaltenes, but also high molecular weight naphthene-aromatic compounds of the atmospheric residue. It is shown that the content of low molecular weight C9–C17 n-alkanes and C9–C10 alkylbenzenes rose sharply in the products of cracking with addition of WC/Ni–Cr in comparison with those produced without the additive. Alkyl- and naphthene-substituted aromatic hydrocarbons of benzene, naphthalene, phenanthrene series, polyarenes, benzo- and dibenzothiophenes are identified.

scholarly journals A new bacterial alcohol dehydrogenase active on degraded lignin and several low molecular weight aromatic compounds

1989 ◽  
Vol 57 (1) ◽  
pp. 109-114 ◽  
Author(s):  
Jean Pelmont ◽  
Catherine Tournesac ◽  
Ahmed Mliki ◽  
Michel Barrelle ◽  
Claude Beguin
Keyword(s):  
Molecular Weight ◽  
Alcohol Dehydrogenase ◽  
Aromatic Compounds ◽  
Low Molecular Weight

Modulation of Ceramide-Activated Protein Phosphatase 2A Activity by Low Molecular Weight Aromatic Compounds

1998 ◽  
Vol 55 (7) ◽  
pp. 1105-1111 ◽  
Author(s):  
Lorenzo M. Leoni ◽  
Hsien C. Shih ◽  
Lynn Deng ◽  
Chuck Tuey ◽  
Gernot Walter ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Aromatic Compounds ◽  
Protein Phosphatase ◽  
Protein Phosphatase 2A ◽  
Low Molecular Weight ◽  
Phosphatase 2A

scholarly journals Identification of the Gene Responsible for Lignin-Derived Low-Molecular-Weight Compound Catabolism in Pseudomonas sp. Strain LLC-1

Genes ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1416
Author(s):  
Jun Hirose ◽  
Ryusei Tsukimata ◽  
Munetoshi Miyatake ◽  
Haruhiko Yokoi
Keyword(s):  
Molecular Weight ◽  
Aromatic Compounds ◽  
Mandelic Acid ◽  
Cloning And Expression ◽  
Low Molecular Weight ◽  
Pseudomonas Sp ◽  
Structural Genes ◽  
Catabolic Enzymes ◽  
Genome Wide ◽  
Close Phylogenetic Relationship

Pseudomonas sp. strain LLC-1 (NBRC 111237) is capable of degrading lignin-derived low-molecular-weight compounds (LLCs). The genes responsible for the catabolism of LLCs were characterized in this study using whole-genome sequencing. Despite the close phylogenetic relationship with Pseudomonas putida, strain LLC-1 lacked the genes usually found in the P. putida genome, which included fer, encoding an enzyme for ferulic acid catabolism, and vdh encoding an NAD+-dependent aldehyde dehydrogenase specific for its catabolic intermediate, vanillin. Cloning and expression of the 8.5 kb locus adjacent to the van operon involved in vanillic acid catabolism revealed the bzf gene cluster, which is involved in benzoylformic acid catabolism. One of the structural genes identified, bzfC, expresses the enzyme (BzfC) having the ability to transform vanillin and syringaldehyde to corresponding acids, indicating that BzfC is a multifunctional enzyme that initiates oxidization of LLCs in strain LLC-1. Benzoylformic acid is a catabolic intermediate of (R,S)-mandelic acid in P. putida. Strain LLC-1 did not possess the genes for mandelic acid racemization and oxidation, suggesting that the function of benzoylformic acid catabolic enzymes is different from that in P. putida. Genome-wide characterization identified the bzf gene responsible for benzoylformate and vanillin catabolism in strain LLC-1, exhibiting a unique mode of dissimilation for biomass-derived aromatic compounds by this strain.

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