Volatile molecular compound 2. Medical search. Frequent questions

Adsorbtion - All VOCs and odorous compounds have a solubility factor in ONA active ingredients. (elevatedequipmentsupply.com)
On the deodorizing application, the hydroxyl radicals accelerate the breakdown of any Volatile Organic Compounds or VOCs by destroying the molecular bonds. (pure8.co)
Volatile organic compounds (VOCs) are metabolites with less molecular excess weight and high vapor pressure and low polarity. (enmd-2076.com)
Secondary electrospray ionization mass spectrometry (SESI-MS) enables the detection of volatile organic compounds (VOCs) without the need for any sample pretreatment. (jove.com)
1.1 This practice is intended to assist in the selection of sorbents and procedures for the sampling and analysis of ambient ( 1 ), indoor ( 2 ) and workplace ( 3,4 ) atmospheres for a variety of common volatile organic compounds (VOCs). (astm.org)
Our latest product, the molecular sieve to remove volatile organic compounds (VOCs), is our newest development. (it-chuiko.com)
In this study, we investigated the effects of volatile organic compounds (VOCs) produced by Bacillus subtilis CF-3 on the growth and development of Colletotrichum gloeosporioides and evaluated the elicitation of active defense responses in harvested litchi fruits. (springeropen.com)
NIOSH investigators conducted site visits at the four airports, collecting general area and personal breathing zone (PBZ) air samples for carbon monoxide (CO), nitrogen dioxide (NO2), nitric oxide (NO), diesel exhaust particulate (measured as elemental carbon [EC]), and volatile organic compounds (VOCs). (cdc.gov)
The dominant VOCs identified within the baggage screening areas of all surveyed airports were isopropyl alcohol, toluene, and low molecular weight hydrocarbons. (cdc.gov)
Rapid gas chromatography-mass spectrometry (GC-MS) is one technique that can be used to detect volatile organic compounds (VOCs) associated with SARS-CoV-2 infection from a person's breath and can provide results in as few as a couple minutes. (cdc.gov)

Dictionary of Inorganic Compounds. (wikipedia.org)
This method enables the analysis of volatile organic as well as inorganic compounds adsorbed onto dust particles, many of which are difficult to analyse together in one single analysis using conventional methods. (karger.com)
2001 ). In addition to antioxidants and food additives, the main components of litchi antiseptic preservatives are chemical fungicides, including organic and inorganic compounds, such as prochloraz, sorbate, NiCl 2 , etc., which have different degrees of toxicity and residual after use (Qi et al. (springeropen.com)

Stock Standard Solutions of Volatile Sulfur Compounds. (datapdf.com)
Volatile sulfur compounds can be formed at various stages during wine production and storage, and some may impart unpleasant "reduced" aromas to wine when present at sensorially significant concentrations. (datapdf.com)
Quantitative data are necessary to understand factors that influence the formation of volatile sulfur compounds, but their analysis is not a trivial undertaking. (datapdf.com)
A rapid and selective method for determining 10 volatile sulfur-containing aroma compounds in wine that have been linked to "offodors" has been developed. (datapdf.com)
To study the contribution of volatile sulfur compounds, the GC-SCD method was applied to 68 commercial wines that had reductive sensory evaluations. (datapdf.com)
Over 700 volatile compounds are known to contribute to wine aroma and flavor (1-5), including compounds containing one or more sulfur atoms. (datapdf.com)
Volatile sulfur compounds can be formed by biological and chemical mechanisms at various stages during wine production and storage and often have low aroma detection thresholds (from ng/L to μg/L range). (datapdf.com)
The role of volatile sulfur compounds (VSCs) in producing bacteria that colonize the dorsal surface of the tongue was recently understood as a primary cause of halitosis (bad breath). (medscape.com)
Blood-borne causes often are consequences of metabolic processes that emit odorous volatile sulfur compounds, which are taken by the bloodstream, transported to the lungs, and emitted during exhalation. (medscape.com)
He and coworkers established that oral malodor (bad breath) is associated with the presence of volatile sulfur compounds, primarily hydrogen sulfide and methylmercaptan. (medscape.com)

Isopentane (systematic name: 2-methylbutane or methylbutane) is an organic chemical compound with 5 C atoms and the molecular formula C₅H₁₂. (hercutec-pentane.de)
Although they have the same molecular weight and molecular formula, they differ structurally by where the chlorine atoms are attached to the benzene ring. (cdc.gov)

1. Methyl tert-butyl ether MTBE is an organic compound with molecular formula (CH3)3COCH3. (sinochemi.com)
Dichloromethane, Reagent, ACS is a liquid, organic compound that is volatile and has a light sweet aroma. (sciencelab.com)

Therefore, the exploitation of this undervalued part of the plant can be a source of valuable bioactive compounds for food and/or pharmaceutical industries. (mdpi.com)
This matrix of bioactive compounds supports a healthy GI tract, creates a healthy microbiome, and helps maintain normal inflammatory balance. (arcanaempothecary.com)

Ketones (2-heptanone and 2-pentanone, in particular) are the most abundant compounds in mascarpone headspace, followed by 2-propanone, 2-nonanone, 2-butanone, 1-pentanol, 2-ethyl-1-hexanol, furfural and 2-furanmethanol. (unboundmedicine.com)
The headspace of the bacterial culture is displaced by CO 2 (1) into the SESI reaction chamber (2). (jove.com)
As a demonstration of the use of SESI-MS for the characterization of bacterial volatiles, E. coli K12 and P. aeruginosa PAO1 are cultured aerobically for 24 h in 50 mL LB-Lennox at 37 °C and the SESI-MS spectra of the headspace volatiles are collected in 2 minutes. (jove.com)

D Vocarb models feature a special blend of carbon to tackle heavy concentrations of airborne pollutants, odor and volatile organic compounds. (allbrands.com)
In a microwave discharge in nitrogen, high-volatile bituminous coal produces gaseous products, namely hydrogen cyanide , acetylene, small amounts of cyanogen and low-molecular-weight hydrocarbon gases, and nitrogen-containing compounds, in addition to the usual hydrogen and carbon oxides. (cdc.gov)
A very complex combination of high molecular weight organic compounds containing a relatively high proportion of hydrocarbons having carbon numbers predominantly greater than C25 with high carbon-to-hydrogen ratios. (europa.eu)
In average bread making, from 12 to 2 per cent of dry matter is lost by fermentation and the formation of volatile products as carbon dioxid, alcohol, volatile hydrocarbons, and ammonium products. (co.ls)
Terpenes are a broad class of organic compounds classified by the number of 5-carbon isoprene units composing the molecule. (cannabissciencetech.com)
Carbon dioxide (99.99 %) at a flow rate of 2 L/min is used as the carrier gas for volatile delivery to the reaction chamber. (jove.com)
Carbosilanes are compounds in which the elements of silicon and carbon alternate in a molecular framework or polymeric backbone in an approximate ratio of 1:1. (gelest.com)

1990). Although thermal desorption is frequently used to recover volatile analytes from sorbents, this technique often fails with charcoal because the temperature required for volatilization of strongly adsorbed compounds results in the decomposition of the analytes, especially in the presence of water (Cocheo et al. (cdc.gov)

A new technique is described which can measure low molecular weight compounds adsorbed onto dust particles in a simple yet accurate way. (karger.com)
Low-molecular-weight carbonyl compounds such as formaldehyde, acetaldehyde, and acrolein are difficult to accurately analyze because they are highly volatile, reactive, and water-soluble. (cdc.gov)
The active molecules in ONA will attract or come into contact with low molecular weight or volatile compounds (VOC? (elevatedequipmentsupply.com)
Plant smell is a combination of low molecular weight volatile compounds released by stems, roots, leaves, flowers, fruits and/or other organs. (peonysociety.eu)
For this purpose, several virgin polymers were contaminated with volatile organic compounds that differed in functionality and molecular weight. (aimspress.com)
High molecular weight compounds or very polar compounds cannot be analyzed or will contaminate the analytical system. (gerstelus.com)

What controls the atmospheric CO 2 and CH 4 variations and the partitioning of emissions between the atmosphere, the ocean and sinks in the biosphere? (lu.se)

The extracted water-soluble Pb compounds, water/fat-insoluble Pb compounds, and water/fat-insoluble Pb element were transformed into EDTA-Pb in real time for online electrospray ionization mass spectrometry analysis, while the extracted fat-soluble Pb compounds were directly detected by electrospray ionization mass spectrometry. (bvsalud.org)

GC/MS analysis allows separation of compounds based on their retention time within a chromatography column and identification of each compound by the characteristic fragments into which a given chemical is broken following ionization of the compound. (medscape.com)
Over the years, technologic advances in electronics and detectors have allowed GC/MS to detect ever smaller concentrations of compounds, as has the addition of other analytical techniques, such as liquid chromatography. (medscape.com)

Some examples of threatening stimuli include detection of insect footsteps or eggs, mechanical damage, introduction of hydrogen peroxide (H2O2) from insect feeding secretions, or fragments of cell walls from pathogens (2). (cannabissciencetech.com)

Effect of different washing conditions on the removal efficiency of selected compounds in biopolymers[J]. Clean Technologies and Recycling, 2023, 3(3): 134-147. (aimspress.com)

Moreover, the contamination degree was found to be higher for polar contaminants since polar compounds show higher compatibility with the polymer. (aimspress.com)

The amount of volatile hydrocarbon derivatives formed during bread making is small, less than 10 of a per cent. (co.ls)

Under normal pressure, the boiling point of this colorless and highly volatile liquid is 28 °C. Isopentane is highly flammable, so proper handling is imperative. (hercutec-pentane.de)

The purpose of this chapter is to describe the analytical methods that are available for detecting, and/or measuring, and/or monitoring 2-butoxyethanol, 2-butoxyethanol acetate, their metabolites, and other biomarkers of exposure and effect to these compounds. (cdc.gov)
Analytical methods for the determination of 2-butoxyethanol, 2-butoxyethanol acetate, and metabolites in biological matrices are shown in Table 6-l. (cdc.gov)
The metabolites of 2-butoxyethanol and 2-butoxyethanol acetate include 2-butoxyacetic acid and conjugates of 2-butoxyacetic acid, including the conjugate with glutamine. (cdc.gov)
Common among these 10 interactions of organic compounds, their power to detect excess cancer agents is the electrophilic nature of or their metabolites, with DNA and R 1 risk at particular sites. (who.int)

1993). Following extraction and derivatization to trimethylsilyl derivatives, free 2-butoxyacetic acid and 2-butoxyacetylglutamine were determined by HPLC. (cdc.gov)
More particularly, the compounds of this invention are directed to 3,6-bis-basic keto-acenaphthene derivatives useful as antiviral agents. (justia.com)

2. MTBE is a volatile, flammable, and colorless liquid that is sparingly soluble in water. (sinochemi.com)

Routine analyses for the glycol ethers in water, including 2-butoxyethanol and its acetate are often not completed because frequently used general-purpose GC/MS methods designed to measure priority pollutants do not readily detect these compounds (Eckel et al. (cdc.gov)
However, the Food and Drug Administration (FDA) may authorize or clear tests that use other methods to detect SARS-CoV-2, the virus that causes COVID-19. (cdc.gov)
Other diagnostic tests may be used to detect SARS-CoV-2 from non-traditional respiratory specimens, such as breath. (cdc.gov)

2-Butoxyacetic acid and its conjugates are isolated from urine or blood by extraction and are derivatized to increase volatility for GC separation and detection (Begerow et al. (cdc.gov)
These patterns tend to be highly conserved in the microbes' genome and allow for the detection of entire groups of microbes that share a recognized molecular pattern (2). (cannabissciencetech.com)
The method was first described by Fenn and colleagues 1 and has been applied to the detection of illicit drugs 2 and explosives 3-4 , the characterization of skin volatiles 5 , and the analysis of breath 6-7 . (jove.com)
Here, recent developments in direct mass spectrometry analysis of exhaled human breath are reviewed with regard to analytical performance (chemical sensitivity, selectivity, quantitative capabilities) and applications of the developed methods in disease diagnosis, targeted molecular detection, and real-time metabolic monitoring. (bvsalud.org)
Currently, there are three basic types of tests to determine if an individual has been infected with SARS-CoV-2: viral nucleic acid (RNA) detection, viral antigen detection, and detection of antibodies to the virus. (medscape.com)
Viral tests (nucleic acid or antigen detection tests) are used to assess acute infection, whereas antibody tests provide evidence of prior infection with SARS-CoV-2. (medscape.com)
To separate tests in this category from more traditional viral tests, NAATs and antigen tests, the FDA has created a page dedicated to other diagnostic tests for SARS-CoV-2 detection. (cdc.gov)

International Journal of Molecular Sciences 22, (2021). (mpg.de)
International Journal of Molecular Sciences 21, (2020). (mpg.de)

Atmospheric constituents such as chlorofluorocarbons (CFCs) and CFC substitutes, greenhouse gases, and nitrogenous and sulfurous compounds undergo photochemical reactions either directly or indirectly in the presence of sunlight. (pure8.co)

Tobacco smoke contains more than 4000 chemicals, including carcinogenic and toxic carbonyl compounds (e.g., formaldehyde, acetaldehyde, and acrolein).1,2 The amount of many individual carbonyl compounds in mainstream smoke is typically in the range of micrograms per cigarette.3 A risk assessment by Fowles and Dybing4 on chemical constituents in cigarette smoke suggested that mainstream smoke gas-phase constituents contribute heavily toward the cancer risk indices. (cdc.gov)

Direct trace analyses of these reactive compounds are problematic compared with less reactive volatiles in smoke.14 Therefore, many stable derivative approaches have been developed. (cdc.gov)

Analytical methods specific for the determination of 2-butoxyethanol and 2-butoxyethanol acetate in environmental matrices are shown in Table 6-2. (cdc.gov)

Titanium perchlorate is a molecular compound of titanium and perchlorate groups with formula Ti(ClO4)4. (wikipedia.org)

1993). HPLC has been applied to simultaneously analyze both free 2-butoxyacetic acid and conjugated 2butoxyacetic acid in the urine (Rettenmeier et al. (cdc.gov)
Afterward, molecular docking was used to analyze the binding force of the top 10 active compounds with target proteins of VCAM1, CTNNB1, and JUN. (hindawi.com)
Mass spectrometry will be used to analyze the retention and production of health-promoting compounds, and establish connections between chemical composition, fermentation or processing technology, and quality. (usda.gov)

Molecular Biology and Biochemistry of Fruit Ripening provides comprehensive and mechanistic coverage of fruit ripening, emphasizing commonalities and differences between fruit groups and ripening processes. (chipsbooks.com)

Hydrosilylation describes the reactions to build up high-molecular organosilicon compounds, which serve as the basis for manufacturing silicones. (heraeus-precious-metals.com)

Such measurements in workplace air are of importance because of the known toxic effects of many such compounds. (astm.org)

1982) followed by elution of the compounds with a solvent. (cdc.gov)

ONA's active ingredients come from a blend of 32 essential oils and plant-derived compounds that bond with and neutralize a wide array of odors. (elevatedequipmentsupply.com)
it eliminates odors on a molecular level, giving your beloved pet fresh breath for longer periods of time. (10bestify.com)

This solubility will allow the VOC compound to solubilize itself in the presence of ONA, relative to the chemistry of the emission, temperature, pH, and pressure of the environment. (elevatedequipmentsupply.com)

embedded in the plasma membrane of plant cells are receptors , proteins that recognize microbe-associated molecular patterns (MAMPs) (2). (cannabissciencetech.com)
The molecular docking results revealed that the top 10 active compounds of HGWD had a strong binding to the target proteins of VCAM1, CTNNB1, and JUN. (hindawi.com)

Terpenes are a class of compounds that have become of increasing interest to a broad swath of the cannabis industry because of their desirable consumer appeal and undesirable potential to act as interfering compounds in certain analytical assays. (cannabissciencetech.com)

Sample preparation methods for air samples are based on the adsorption of the target compounds onto a sorbent such as charcoal (Guest et al. (cdc.gov)
Therefore, it is necessary to explore the potential mechanism of action of HGWD in RA treatment based on network pharmacology and molecular docking methods. (hindawi.com)

Accurate quantitation of the reactive and volatile carbonyls in cigarette smoke is essential to assessing and characterizing tobacco products, both conventional and/or new emerging ones. (cdc.gov)
The reactive organosulfur compounds form disulfide bonds with free sulfhydryl groups of enzymes and compromise the integrity of the bacterial membrane. (frontiersin.org)

It is obtained as the non-volatile residue from distillation of crude oil or by separation as the raffinate from a residual oil in a deasphalting or decarbonization process. (europa.eu)
The combination of GC techniques is however restricted to the analysis of volatile (GC amenable) compounds and the separation mechanism is mostly based on volatility (boiling point separation). (gerstelus.com)

There are three mechanisms of action that can occur, based on the chemical and physical natures of each terpene and active ingredient versus the organic and inorganic volatile compounds. (elevatedequipmentsupply.com)
The ONA odor neutralizing products consist of complex formulations representing a variety of chemical compounds offering different functionalities, both structural and chemical. (elevatedequipmentsupply.com)
The subject matter of this invention is directed to new chemical compounds, to their preparation, and to pharmaceutical compositions containing such compounds. (justia.com)
2. Identify beneficial chemical constituents of vegetables that facilitate the development of novel, clean-label, health-promoting fermented and acidified products that retain consumer-preferred appearance, textures, and flavor during processing, storage and distribution. (usda.gov)
Trichlorobenzenes are human-made compounds that occur in three different chemical forms. (cdc.gov)
Trichlorobenzenes have primarily been used as solvents and chemical intermediates to produce other compounds. (cdc.gov)
You can Download Chapter 4 Chemical Bonding and Molecular Structure Questions and Answers, Notes, 1st PUC Chemistry Question Bank with Answers Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations. (kseebsolutions.com)

SESI ionization occurs by proton transfer reactions between the electrospray solution and the volatile analyte, and is therefore suitable for the analysis of hetero-organic molecules, just as in traditional electrospray ionization (ESI). (jove.com)

Explore perceived sweetpotato sweetness and the impact of precursors in raw sweetpotato on the sugar and volatile compound composition of processed products. (usda.gov)
The molecular composition of exhaled human breath can reflect various physiological and pathological conditions. (bvsalud.org)

The principal phytochemicals that exhibit antibacterial activity are oil-soluble organosulfur compounds that include allicin, ajoenes, and allyl sulfides. (frontiersin.org)
The organosulfur compounds of garlic exhibit a range of antibacterial properties such as bactericidal, antibiofilm, antitoxin, and anti-quorum sensing activity against a wide range of bacteria including multi-drug resistant (MDR) strains. (frontiersin.org)
Multiple antibacterial effects of organosulfur compounds provide an excellent framework to develop them into novel antibiotics. (frontiersin.org)
The review provides a focused and comprehensive portrait of the status of garlic and its compounds as antibacterial agents. (frontiersin.org)

HGWD has important active compounds such as quercetin, kaempferol, and beta-sitosterol, which exert its therapeutic effect on multiple targets and multiple pathways. (hindawi.com)

Analyzing the molecular profile allows the company to create wine from a few ingredients like acids, amino acids, sugars, volatile organics, and ethanol. (agfundernews.com)

The photocatalytic reactivity of titanium oxides can be applied for the reduction or elimination of polluted compounds in air such as NOx, cigarette smoke, as well as volatile compounds arising from various construction materials. (pure8.co)

These compounds give the characteristic aroma to freshly baked bread. (co.ls)
To the best of our knowledge, no investigation has been carried out on the volatile compounds contributing to the mascarpone cheese aroma profile. (unboundmedicine.com)

We have demonstrated that SESI-MS volatile fingerprinting, combined with a statistical analysis method, can be used to differentiate bacterial genera, species, and mixed cultures in a variety of growth media. (jove.com)
Depending on the fungal prey species, chemotropic responses resulted in either increased or decreased directional colony extension and hyphal density at the colony periphery closest to the test compound source. (frontiersin.org)
The presented assays will be useful for screening of candidate compounds, and for evaluating their impact on the developmental spectrum of T. atroviride and other related species alike. (frontiersin.org)

Volatile higher silanes are low temperature, high deposition rate precursors. (gelest.com)

Trichlorobenzenes are volatile substances and may therefore partition or volatilize to air when released to the environment. (cdc.gov)

A polymeric oxychlorperchlorato compound of titanium, Ti6O4Clx(ClO4)16−x, is made from excess TiCl4 and dichlorine hexoxide. (wikipedia.org)

These genetic circuits often come into play when medical conditions are being controlled, and many gene switches can be triggered in the presence of small molecular compounds such as antibiotics, vitamins, food additives, cosmetics, or volatile fragrances. (electropages.com)

Analyst 1.4.2 software (Applied Biosystems) is used for data collection with the following parameters: 20 - 500 Da, MCA mode, 40 scans, 3 s/scan, and 2 min total analysis time. (jove.com)
Conidial germlings proved particularly useful for simple and rapid compound screening, whereas more elaborate microscopic analysis of microcolonies and fully differentiated mycelia was essential to understand process-specific responses, such as plant symbiosis and biocontrol. (frontiersin.org)

Here, we applied three different chemotropic assays to study the chemosensing capacity of T. atroviride toward compounds known or suspected to play a role in the mycoparasite/plant or host/prey fungal interactions and to cover the complete spectrum of T. atroviride developmental stages. (frontiersin.org)

This page will be updated if additional diagnostics tests are authorized or cleared by the FDA that do not fall into the NAAT (molecular) or antigen viral test categories. (cdc.gov)

Because the signs and symptoms of coronavirus disease 2019 (COVID-19) may overlap with those of other respiratory pathogens, it is important to perform laboratory testing to specifically identify symptomatic individuals infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). (medscape.com)
Vitamin D up-regulates specific genes that increase cellular production of natural compounds that protect us against pathogens. (arcanaempothecary.com)

The dust sample is thermally desorbed in the oven and the compounds released are flushed onto the GC column by means of a carrier gas stream. (karger.com)

The separated compounds are then registered by the PDA detector and identified by their characteristic gas-phase UV spectra. (karger.com)

One of the isomers (1,2,4-trichlorobenzene) is produced in large quantities and is used as a solvent to dissolve such special materials as oils, waxes, resins, greases, and rubber. (cdc.gov)

It decomposes to TiO2, ClO2 and dioxygen O2 Also TiO(ClO4)2 is formed during decomposition. (wikipedia.org)

8 Here we provide the steps for obtaining bacterial volatile fingerprints using SESI-MS, including the instrumental parameters that should be optimized to ensure robust bacterial identification and characterization. (jove.com)

The potentials of multidimensional HPLC, in this respect, are much larger and very specific separations based on hydrophobicity, polarity, ion strength, molecular size or affinity can be obtained. (gerstelus.com)

Carbonyls, especially aldehydes, are a group of harmful volatile organic compounds that are found in tobacco smoke. (cdc.gov)

Positive test results from the first breath test authorized to test for SARS-CoV-2 by FDA should be interpreted as presumptive and be confirmed by NAAT . (cdc.gov)
[ 2 ] Morning breath and hyposalivation can be due to altered salivary quantity or quality. (medscape.com)

Anatomy13

Organisms12

Chemicals and Drugs157

Analytical, Diagnostic and Therapeutic Techniques and Equipment36

Phenomena and Processes35

Disciplines and Occupations3

Technology, Industry, Agriculture2

Information Science4

Health Care2

VOCs10

Inorganic Compounds3

Sulfur10

Atoms2

Organic compound2

Bioactive2

Headspace3

Carbon7

Sorbents1

Weight6

Emissions1

Water-soluble1

Chromatography2

Hydrogen1

20231

Polar1

Hydrocarbon1

Highly volatile1

Metabolites4

Derivatives2

Colorless liquid1

Detect3

Detection7

International Journal2

Gases1

Formaldehyde1

Volatiles1

Determination1

Formula1

Analyze3

Biology1

High molecular1

Toxic1

Elution1

Odors2

Solubility1

Proteins2

Analytical1

Methods2

Reactive2

Separation2

Chemical7

Analyte1

Composition2

Antibacterial4

Quercetin1

Ethanol1

Cigarette smoke1

Aroma2

Species3

Precursors1

Substances1

Polymeric1

Antibiotics1

Analysis2

Assays1

Viral test1

Pathogens2

Carrier gas1

Characteristic1

Solvent1

Decomposition1

Identification1

Polarity1

Harmful1

Breath2