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Wednesday, August 5, 2020 | History

2 edition of Fungal degradation of some aromatic alcohols found in the catalog.

Fungal degradation of some aromatic alcohols

C. B. Iyayi

Fungal degradation of some aromatic alcohols

by C. B. Iyayi

  • 285 Want to read
  • 17 Currently reading

Published .
Written in English


Edition Notes

Thesis(Ph.D.) - Loughborough University of Technology 1980.

Statementby C.B. Iyayi.
ID Numbers
Open LibraryOL20300836M

  The degradation of PAH by white rot fungi does not proceed by a single oxidative pathway, and the intracellular degradation of some polycyclic aromatic compounds, e.g., phenanthrene, has been reported. The ability of extracellular peroxidases (e.g., ligninase) to metabolize PAH directly or by formation of peroxide radicals was demonstrated in numerous by: FUNGAL DEGRADATION OF OIL IN THE MARINE ENVIRONMENT. Accelerated addition of petroleum products into the environment may significantly affect the energy exchange and overall productivity of marine ecosystems. Biodegradation of hydrocarbon compounds has been demonstrated for many taxa of yeast and by:

Enzymatic biodegradation of polycyclic aromatic hydrocarbons by fungal strains has not been significantly reviewed, to the best of our knowledge. The main objective of the present review is to understand the enzymatic biodegradation of PAHs using fungal by:   However, plant biomass is also the source of many food and industrial products that are used in our society. This has resulted in a broad interest from researchers and industry in the enzymatic degradation of plant biomass, starting with the first application of these degrading enzymes in the beginning of the last century (e.g., hydrolysis of starch and maltose []).Cited by:

Fungal degradation Within this project different reactor designs, such as solid state fermentation and fluidized bed, the use of different carbon sources as well as other operational parameters are evaluated to find a simple and cost efficient way to treat dyes using white-rot fungi.   Some key functional categories for dye decolorization like oxidoreduction reactions and aromatic compound degradation are only enriched under dye/lignin co-metabolism by: 5.


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Fungal degradation of some aromatic alcohols by C. B. Iyayi Download PDF EPUB FB2

The enzymes of fungi implicated in the PAHs degradation, the fungal lignolytic enzymes are laccase, lignin and manganese peroxidase, those fungi extracellular and.

Twenty species of fungi were examined for their ability to utilize p-coumaryl alcohol, coniferyl alcohol, sinapyl alcohol and mandelic acid, the first three being major constituents of the lignin of wood.

Four organisms were selected for further work. These were Aspergillus flavus, Byssochlamys fulva, Polyporus dichrous and Schizophyllum : Christopher B. Iyayi. This aryl-alcohol oxidase catalyses conversion of primary aromatic alcohols to the corresponding aldehydes and H2O2, showing no activity with aliphatic and secondary aromatic alcohols.

Fungal degradation mechanisms of aliphatic hydrocarbons and enzymes involved One of the main mechanisms by which hydrocarbon pollutants can be removed from the environment is the biodegradation activities of natural fungal and bacterial by: 1. Partial transformation reactions, complete degradation of hydrocarbons in the presence of second compatible substrate and independent use of hydrocarbons as a carbon source to present review is focused on fungal metabolize pathways of some polycyclic aromatic contaminants under aerobic conditions of culture.

In some cases the enzyme may attack the lignin polymer directly; in others the ligninolytic agent is likely a small molecule that one of the enzymes has oxidized to a reactive form. So far, all white rot fungi appear to secrete manganese peroxidases, and most produce laccases, whereas the other two enzymes are less by:   Those interested in the theoretical underpinnings of mycoremediation, fungal metabolism or modeling approaches to fungal physiology will also learn much from this monumental work." (Inoculum, May ) "The book is unique in its form, since it is.

The synthesis of chemical pesticides, capable to prevent, control Fungal degradation of some aromatic alcohols book eliminate some relevant pests is one of them.

The infestation of crop fields with pests has repercussions directly on the quality of foodstuffs and also on economic by: 3. The separations of alcohols with hydrophilic and hydrophobic parts, and the separation of aromatic mixtures, are extremely important processes in gas and petroleum industries.

Choosing an adsorbent for performing this separation is the most important part of the process. Silica gel is used as an adsorbent is various techniques such as pressure.

Phenols and Aromatic Alcohols Aromatic alcohols DLPhenylethanol The aromatic alcohols have only a limited use in industry.

The phenylethanols, for example, are used in the production of flavourings, soaps, perfumes, etc., because of their pleasant odour. Limit values for tolerable concentrations of these substances in theAuthor: J.

Angerer. The oxidation of polycyclic aromatic compounds was studied in systems consisting of laccase from Trametes versicolor and so-called mediator compounds. The enzymatic oxidation of acenaphthene, acenaphthylene, anthracene, and fluorene was mediated by various laccase substrates (phenols and aromatic amines) or compounds produced and secreted by white rot fungi.

The best Cited by: This is in agreement with our current understanding of brown-rot fungal biodegradation mechanisms, which is based on the oxidative attack of free radicals (i.e.

hydroxyl radicals) generated via reaction of transition metals (i.e., iron) with hydrogen peroxide (Fenton reaction) as discussed earlier. This study was conducted to evaluate the degradation of aromatic dyes and the production of ligninolytic enzymes by 10 white rot fungi.

The results of this study revealed that Pycnoporus cinnabarinus, Pleurotus pulmonarius, Ganoderma lucidum, Trametes suaveolens, Stereum ostrea and Fomes fomentarius have the ability to efficiently degrade congo red on solid Cited by: All the fungal strains used in this work exhibited some ligninolytic activity and degradation after growth in the PAHs, which varied with the time of growth and also with the carbon source.

Table 1 shows the greatest values of the activities of the enzymes produced after growth of all 13 strains in naphthalene. demonstrating that lignin degradation is oxidative, 3) the detrimental effect of agitation in lignin mineralization, and 4) the concomitant production of veratryl alcohol during lignin degradation.

Some other fungi, e.g. Phlebia radiata (Ha-takka and Uusi-Rauva, File Size: 2MB. The paper describes the purification, biochemical characterization, sequence determination, and classification of a novel thermophilic hydrolase from Thermobifida fusca (TfH) which is highly active in hydrolyzing aliphatic−aromatic copolyesters.

The secretion of the extracellular enzyme is induced by the presence of aliphatic−aromatic copolyesters but also by adding several other esters to Cited by: The degradation of poly-aromatic hydrocarbons by Sphingomonas was reported by Daugulis and McCracken.

Fungal genera, namely, Amorphoteca, Neosartorya, Talaromyces, and Graphium and yeast genera, namely, Candida, Yarrowia, and Pichia were isolated from petroleum-contaminated soil and proved to be the potential organisms for hydrocarbon Cited by: Veratrole alcohol (veratryl alcohol) is an organic compound related to veratrole and also to benzyl can be obtained by reduction of veratraldehyde.

Veratrole alcohol is the raw material for the synthesis of cyclotriveratrylene which is used in host–guest is a secondary metabolite of some white rot fungi and is believed to play a role in their degradation of Number: 2 Principles of Bacterial Degradation Typical Aerobic Degrading Bacteria Growth-Associated Degradation of Aliphatics Diversity of Aromatic Compounds – Unity of Catabolic Processes Extension of Degradative Capacities Cometabolic Degradation of Organopollutants Cited by: The following question was given in NCERT Exemplar Problems (Class XII): According to Wikipedia: In organic chemistry, the aromatic alcohols or aryl-alcohols are a class of chemical compounds containing a hydroxyl group (—OH) bonded directly to an aromatic hydrocarbon group, in contrast to the benzyl alcohol, where the hydroxyl group is bonded indirectly to an aromatic carbon g: Fungal degradation.

@article{osti_, title = {Aromatic hydrocarbons: degradation by bacteria and fungi}, author = {Cerniglia, C E and Gibson, D T}, abstractNote = {Aspects of microbial and mammalian degradation of hydrocarbons are reviewed.

Bacterial and fungal metabolism are examined. Data are presented indicating that the fungus C. elegans metabolizes naphthalene similar to monooxygenases of hepatic.Laccases are blue multicopper oxidases, which catalyze the monoelectronic oxidation of a broad spectrum of substrates, for example, ortho- and para- diphenols, polyphenols, aminophenols, and aromatic or aliphatic amines, coupled with a full, four-electron reduction of O 2 to H 2 O.

Hence, they are capable of degrading lignin and are present abundantly in many white-rot by:   Microbial Degradation of Petroleum Biodegradation of HCS is a complex process depending on: • the nature • Amount of the hydrocarbons present Petroleum HCS divided into four classes: • The alephatics • The aromatics • The asphaltenes (phenols, fatty acids, ketones, esters, and porphyrins), • And the resins (pyridines, quinolines.