Biologically produced volatile compounds N20 emissions from soils : final scientific report for the period September 1, 1984 - August 30, 1985

Cover of: Biologically produced volatile compounds |

Published by NASA-Ames Research Center, National Technical Information Service, distributor in [Moffett Field, Calif.], [Springfield, Va .

Written in English

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Subjects:

  • Atmospheric composition.,
  • Atmospheric models.,
  • Nitrous oxides.,
  • Stratosphere.,
  • Troposhere.

Edition Notes

Book details

Statementsubmitted by Dr. A. Banin, principle investigator.
SeriesNASA contractor report -- NASA-CR-177111., NASA contractor report -- NASA CR-177111.
ContributionsAmes Research Center.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL17684370M

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Volatile organic compounds (VOCs) are organic chemicals that have a high vapor pressure at ordinary room high vapor pressure results from a low boiling point, which causes large numbers of molecules to evaporate or sublimate from the liquid or solid form of the compound and enter the surrounding air, a trait known as example, formaldehyde, which evaporates from.

Volatile Organic Compound. Volatile organic compounds (VOCs) are a large class of low-molecular-weight, carbon-containing compounds characterized by their high volatility, low vapor pressure (≥kPa at 20°C), and low water solubility (Herrmann, ). From: New and Future Developments in Microbial Biotechnology and Bioengineering, Volatile organic compounds (VOCs) mean any compound of carbon which participate in atmospheric photochemical reactions, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate [12].Moreover, VOCs are a generic term for organic chemicals whose boiling point is low and volatilize easily into the atmosphere at room temperature.

Get this from a library. Biologically produced volatile compounds: N20 emissions from soils: final scientific report for the period September 1, - Aug [A Banin; Ames Research Center.]. The volatile organic compounds of eight weakly polluted small rivers and brooks in SW Germany were studied by GC-MS.

Special emphasis was placed on the differentiation between biogenic and. Volatile organic compounds (VOCs) are carbon-compounds that easily evaporate at room temperature. Toxins are biologically produced poisons; mycotoxins are those toxins produced by microscopic fungi.

All fungi emit blends of VOCs; the qualitative and quantitative composition of these volatile blends varies with the species of fungus and the Cited by: Volatile organic compounds (VOCs) are organic chemicals that have a high vapor pressure at ordinary room high vapor pressure results from a low boiling point, which causes large numbers of molecules to evaporate or sublimate from the liquid or solid form of the compound and enter the surrounding air.

For example, formaldehyde, which evaporates from paint, has a boiling point. In recent past, bioactive volatile compounds have been reported from two endophytic fungi, Phoma sp. and Nodulisporium sp., which produce biologically active volatile compounds having fuel.

Air laden with biodegradable volatile organic compounds is passed sequentially through a first filter bed (26) containing a biologically inert filter media, a second filter bed (32A) containing a biologically active filter media, and a third filter bed (32B) containing a biologically insert filter media.

Microalgal biomass can be used in creating various functional food and feed products, but certain species of microalgae and cyanobacteria are known to produce various compounds causing off-flavour. In this work, we investigated selected cyanobacterial strains of Spirulina, Anabaena, and Nostoc genera originating from Serbia, with the aim of determining the chemical profile of volatile Cited by:   Other problems are the need for complete removal of residual low volatile solvents, such as n-BuOH, trifluoroacetic acid and ammonia and the transfer of the active compounds from the stationary phase into the agar layer by diffusion (Cos et al., ).

Because bio-autography allows localizing antimicrobial activities of an extract on the Cited by: A biological oxidizer is a device that uses micro-organisms to treat wastewater and the volatile organic compounds produced by commercial and industrial operations.

Biological oxidation devices convert biodegradable organic compounds into carbon dioxide and is a natural occurring process which differs from traditional chemical and thermal oxidizing agents and methods.

Sulfur (in British English, sulphur) is a chemical element with the symbol S and atomic number It is abundant, multivalent, and normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S tal sulfur is a bright yellow, crystalline solid at room temperature.

Sulfur is the tenth most common element by mass in the universe, and the fifth Alternative name: sulphur (British spelling). Traditional Balsamic Vinegar (or Aceto Balsamico Tradizionale) is a type of balsamic vinegar produced in Modena and the wider Emilia Romagna region of inexpensive "Balsamic Vinegar of Modena" (BVM), Traditional Balsamic Vinegar (TBV) is produced from cooked grape must, aged at least 12 years, and protected under the European Protected Designation of Origin (PDO) system, fetching.

Life as we know it (i.e., terran life, as discussed in Chapter 1) is based on organic chemistry and is constructed of carbonaceous organic materials are pervasive in Earth’s crust and constitute an extensive chemical and isotopic record of past life that far exceeds what is recorded by visible fossils.

1 The ubiquity of coal, organic-rich black shales, and petroleum. Haloalkane or alkyl halides are the compounds which have the general formula "RX" where R is an alkyl or substituted alkyl group and X is a halogen (F, Cl, Br, I).

Haloalkanes have been known for centuries. Chloroethane was produced synthetically in the 15th century. The systematic synthesis of such compounds developed in the 19th century in. Certain endophytic fungi belonging to the Hypoxylon genus have recently been found to produce volatile organic compounds (VOCs) that have potential relevance as hydrocarbon fuels.

Here, a recently discovered Hypoxylon sp. (BS15) was demonstrated to also produce VOCs, but with diminished VOC production after an extended period of in vitro by: 1. The opercula contains biologically active compounds and produces smoke containing volatile scent compounds, consistent with their identification as the most likely source of onycha, a Cited by: 4.

Volatile organic compounds (VOCs) have a low molecular weight and a lower boiling point, which facilitate quick evaporation or sublimation and create a higher vapor density.

About microbial volatile organic compounds (mVOCs) have been documented as being produced by at least different bacterial and fungal species to date; approximately Author: Sudipta Roy, Debdulal Banerjee. Biofiltration is a pollution control technique using a bioreactor containing living material to capture and biologically degrade pollutants.

Common uses include processing waste water, capturing harmful chemicals or silt from surface runoff, and microbiotic oxidation of contaminants in air. Kaminski E, LIbbey LM, Stawicki S, Wasowicz E () Identification of the predominant volatile compounds produced by Aspergillus flavus.

Appl Microbiol – PubMed Google Scholar Kaplan HB, Greenberg EP () Diffusion of autoinducer is involved in regulation of the Vibrio fischeri luminescence by: @article{osti_, title = {Removal of volatile organic compounds (VOC`s) generated by Forest Product Industries using biofiltration technology}, author = {Gilliland, G A and Ramaswami, R D and Patel, D N}, abstractNote = {Implementation of Clean Air Act Title V and the increasing environmental concerns of the public are imposing greater demands on the Forest Product industries to control.

The aim of this book is to describe chemical and biochemical aspects of winemaking that are currently being researched. The authors have selected the very best experts for each of the areas. The first part of the book summarizes the most important aspects of winemaking technology and microbiology.

The second most extensive part deals with the different groups of compounds, how. Films of biogenic compounds exposed to the atmosphere are ubiquitously found on the surfaces of cloud droplets, aerosol particles, buildings, plants, soils and the ocean.

These air/water interfaces host countless amphiphilic compounds concentrated there with respect to in bulk water, leading to a unique chem Atmospheric chemistry in the Anthropocene. The hydrolyzed compounds are fermented into volatile fatty acids (acetate, propionate, butyrate, and lactate), neutral compounds (ethanol, methanol), ammonia, hydrogen and carbon dioxide.

[3] [4] [5] Acetogenesis is one of the main reactions of this stage, in this, the intermediary metabolites produced are metabolized to acetate, hydrogen and. Volatile organic compounds (VOCs) are chemicals that both vaporize into air and dissolve in water. VOCs are pervasive in daily life, because they’re used in industry, agriculture, transportation, and day-to-day activities around the home.

Once released into groundwater, many VOCs are persistent and can migrate to drinking-water supply wells. Goals / Objectives 1: Characterize biologically active compounds (BACs) in milk from organic, grass-fed, and conventional herds.

1.a: Identify and quantify the protein-based, lipid-based, and other BACs in milk from organic, grass-fed, and conventional bovine dairy herds, select the BACs that will be tracked for the rest of the study and establish assay methodologies.

1.b: Establish the. The biologically-generated VOC field is widely developed, and thousands of such compounds have been described. Thus, the investigation into this field requires a holistic approach that is achieved by means of metabolomics, which explores the production and concentrations of secondary metabolites from organisms (i.e., metabolomics) and their metabolomes and correlates these variables to biotic Author: Ricardo Barbosa-Cornelio, Fernando Cantor, Ericsson Coy-Barrera, Daniel Rodríguez.

Changes in volatile compounds in whey protein concentrate stored at elevated temperature and humidity (abstract). ADSA-ASAS Joint Annual Meeting (JAM). Book of Abstracts p Advantages of pasture-based milk products - Van Hekken, D.L., Tunick, M.H., Tomasula, P.M.

Another compound that contributes to the scent of roses is beta-damascenone. This compound belongs to a family of chemical entities known as rose ketones. It also has an even lower odour threshold than rose oxide, with its aroma being detectable at just parts per billion.

Another compound with a comparably low odour threshold, beta-ionone. Book: Microbiology (Boundless) Biohydrogen is defined as hydrogen produced biologically, most commonly by algae, bacteria, and archaea. hemicellulases, amylases, lipases and proteases). The hydrolyzed compounds are fermented into volatile fatty acids (acetate, propionate, butyrate, and lactate), neutral compounds (ethanol, methanol.

CHAPTER 6 Algae-Based Biologically Active Compounds flagella. One of the flagellum is anteriorly directed, long, hairy, and pantonematictype, while the second one is posteriorly directed, short, smooth, and acronematictype. Reserve food material is oil and chrysolaminarin. Typical example of kairomone are the volatile organic compounds produced by hosts and are detected by receivers and antennae of insects during the search process and location of food source.

The ability to detect these volatile compounds makes easier the specific recognition of the host and increases the range foraging by the vector [ ].Cited by: 2. Garlic contains % of a volatile oil these volatile compounds are generally considered to be responsible for most of the pharmacological properties of garlic.

Garlic contains at least 33 sulfur compounds like aliin, allicin, ajoene, allylpropl, diallyl, trisulfide, sallylcysteine, vinyldithiines, S-allylmercaptocystein, and others.

Phenolic compounds exist in water bodies due to the discharge of polluted wastewater from industrial, agricultural and domestic activities into water bodies. They also occur as a result of natural phenomena. These compounds are known to be toxic and inflict both severe and long‐lasting effects on both humans and animals.

They act as carcinogens and cause damage to the red blood cells and the Cited by: @article{osti_, title = {Significance and treatment of volatile organic compounds in water supplies}, author = {Ram, N.M.

and Christman, R.F. and Cantor, K.P.}, abstractNote = {Chapter 1 covers the statutory and regulatory basis for the control of chemicals in drinking water and the Amendments to the Safe Drinking Water Act.

Chapter 2 reviews: (1) the nature and extent of. Sixty years after the seminal Miller-Urey experiment that abiotically produced a mixture of racemized amino acids, we provide a definite proof that this primordial soup, when properly cooked, was Cited by: 5.

Volatile organic compounds produced by trees do not cause pollution. Photo-chemical ozone pollution is created when vehicle and power plant pollution is broken down by strong sunlight in the presence of any number of volatile organic compounds.

Volatile organic compounds (VOCs) serve as invisible lines of communication among host plants, pathogens, commensals, community groups, and, with flowers, their pollinators.

Studying petunia flowers, Adebesin et al. show that VOCs do not passively diffuse out of the cells but are actively shuttled across the plasma membrane by an ABC (ATP-binding cassette) transporter (see the Perspective by Cited by: Legislative and Consumer Perception of Biologically Generated Aroma Chemicals Jan Stofberg Chapter 1, DOI: /bkch Publication Date (Print): Aug.

Chapter 24 Organic Compounds. In Chapter 2 "Molecules, Ions, and Chemical Formulas", you were introduced to the major classes of organic compounds, covalent compounds composed primarily of carbon and c substances have been used throughout this text to illustrate the differences between ionic and covalent bonding and to demonstrate the intimate connection between the .Metal nanoparticles, biologically produced using plant extracts, need to be extracted and purified after process completion by their transfer to aqueous solution from biomass.

Several methods are applied for this purpose, in particular the ultrasound-assisted use of citrate (more effective) or cetyltrimethylammonium bromide (CTAB).Cited by: 2.The nitrogen and electron donors displace the soil oxygen thereby facilitating microbial dehalogenation. However, anaerobic bioventing may lead to the mobilization of volatile and semivolatile organic compounds that are not anaerobically degradable (EPA ).

Depending upon the type of bioventing system being employed, these can require treatment.

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