Thermal degradation of mango (Mangifera indica) wood sawdust in a nitrogen environment: characterization, kinetics, reaction mechanism, and thermodynamic analysis

The thermodynamics of the interaction of the glycopeptidic antibiotic teicoplanin and its peptidic moiety with analogues of bacterial cell-wall peptides were studied by means of calorimetric and spectrophotometric techniques. The analysis of the thermodynamic data has allowed us to evaluate the contributions of the different peptide groups to the binding process. The nature of the primary binding forces is also discussed for each interacting group, on the basis of their enthalpic and entropic contribution and in connection with the detailed structural information available for these antibiotics from n.m.r. data. Similar analyses for the case of vancomycin and ristocetin are also reported.

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Thermal degradation reaction mechanism of xylose: A DFT study

Chemical Physics Letters ◽

10.1016/j.cplett.2016.06.025 ◽

2016 ◽

Vol 658 ◽

pp. 114-124 ◽

Cited By ~ 31

Author(s):

Jinbao Huang ◽

Chao He ◽

Longqin Wu ◽

Hong Tong

Keyword(s):

Reaction Mechanism ◽

Thermal Degradation ◽

Dft Study ◽

Degradation Reaction

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Effects of organic acids and initial solution pH on photocatalytic degradation of bisphenol A (BPA) in a photo-Fenton-like process using goethite (α-FeOOH)

Photochemical & Photobiological Sciences ◽

10.1039/c6pp00051g ◽

2016 ◽

Vol 15 (8) ◽

pp. 1046-1053 ◽

Cited By ~ 22

Author(s):

Guangshan Zhang ◽

Qiao Wang ◽

Wen Zhang ◽

Tian Li ◽

Yixing Yuan ◽

...

Keyword(s):

Reaction Mechanism ◽

Bisphenol A ◽

Organic Acids ◽

Photocatalytic Degradation ◽

Initial Solution ◽

Solution Ph ◽

System P

Proposed reaction mechanism of BPA photodegradation in an α-FeOOH-oxalate synergistic system.

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Towards a designed synthesis of metallic nanoparticles in polyols – elucidation of the redox scheme in a cobalt–ethylene glycol system

New Journal of Chemistry ◽

10.1039/c6nj01738j ◽

2016 ◽

Vol 40 (10) ◽

pp. 8632-8642 ◽

Cited By ~ 11

Author(s):

Kazuma Takahashi ◽

Shun Yokoyama ◽

Takatoshi Matsumoto ◽

Jhon L. Cuya Huaman ◽

Hisashi Kaneko ◽

...

Keyword(s):

Reaction Mechanism ◽

Ethylene Glycol ◽

Redox Reaction ◽

Metallic Nanoparticles ◽

Metal Particles ◽

Esi Ms ◽

System P ◽

Ft Ir ◽

Analytical Tools ◽

Designed Synthesis

A new redox reaction mechanism in the formation of Co metal particles using an ethylene glycol–cobalt system is proposed using NMR, ESI-MS, FT-IR and XRD as analytical tools.

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The thermal degradation of polyvinyl acetate. I. Products and reaction mechanism at low temperatures

Transactions of the Faraday Society ◽

10.1039/tf9524800379 ◽

1952 ◽

Vol 48 ◽

pp. 379 ◽

Cited By ~ 84

Author(s):

N. Grassie

Keyword(s):

Reaction Mechanism ◽

Thermal Degradation ◽

Low Temperatures ◽

Polyvinyl Acetate

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Enhancing the Phenolic Content of Bio-Oil by Acid Pre-Treatment of Biomass

International Journal of Renewable Energy Development ◽

10.14710/ijred.7.2.163-169 ◽

2018 ◽

Vol 7 (2) ◽

pp. 163-169

Author(s):

Nurgül Özbay ◽

Elif Yaman

Keyword(s):

Thermal Degradation ◽

Phenolic Content ◽

Degradation Products ◽

Chemical Application ◽

Pyrolysis Gas ◽

Pine Wood ◽

Wood Sawdust ◽

Bio Oil ◽

Pre Treatment ◽

Pine Wood Sawdust

Pyrolysis of lignocellulosic biomass with acidic pre-treatment to produce valuable bio-chemicals has been carried out in an integrated pyrolysis-gas chromatograph/mass spectrometry system. Three different waste biomasses (fir wood sawdust, pine wood sawdust and nutshell) were subjected to acidic solution to specify the acid pre-treatment effect on biomass chemical structure, thermal degradation profile and pyrolysis products. Post acid pre-treatments, the changes in the biomasses and thermal degradation profile were studied through proximate, structure and ultimate analysis and thermogravimetric. The pre-treatment significantly reduced the inorganic, cellulose and hemicellulose content in biomass samples. According to the pyrolysis experiment results, acid pre-treatment provided the increasing of the amount of phenolic in the degradation products at 10 min pyrolysis time. All the results would assist further understanding of thermal decomposition and thermo-chemical application for bio-fuels and bio-chemicals of fir wood sawdust, pine wood sawdust and nutshell.Article History: Received January 15th 2018; Received in revised form May 24th 2018; Accepted 7th June 2018; Available onlineHow to Cite This Article: Ozbay, N. and Yaman, E (2018) Enhancing the Phenolic Content of Bio-Oil by Acid Pre-Treatment of Biomass. Int. Journal of Renewable Energy Development, 7(2), 163-169.https://doi.org/10.14710/ijred.7.2.163-169

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“Thermal Peroxidation” of Dietary Pentapeptides Yields N-Terminal 1,2-Dicarbonyls

Frontiers in Nutrition ◽

10.3389/fnut.2021.663233 ◽

2021 ◽

Vol 8 ◽

Author(s):

Maria Bikaki ◽

Nikolai Kuhnert

Keyword(s):

Lipid Peroxidation ◽

Reaction Mechanism ◽

Thermal Degradation ◽

Primary Amine ◽

Elevated Temperatures ◽

Degradation Products ◽

Degradation Mechanism ◽

Reaction Products ◽

Unsaturated Lipids

In this contribution we investigate the thermal degradation of dietary-relevant pentapeptides. Most unsaturated lipids degrade by the well-known peroxidation mechanism. Here we show a degradation mechanism of peptides analogous to lipid peroxidation, forming a series of novel degradation products with possible toxicological relevance. At elevated temperatures above 180°C, pentapeptides with an N-terminal phenylalanine moiety react via a debenzylation to form 1,2-dicabonyl compounds, replacing the N-terminal primary amine. We propose a radical-based reaction mechanism that leads via a common peroxoaminal intermediate to two distinct types of reaction products with a terminal α-1,2 diamide or an α-amide-aldehyde functionality.

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