Compounds having lower odor thresholds. Medical search. Frequent questions

Air samples indicated non-detectable or low concentrations of sampled contaminants. (cdc.gov)
We do not suspect that daily variability of the mail load will have an effect on the results of our environmental evaluation based on the number of buildings and offices evaluated, the number of samples collected, and the low concentrations of any detectable compounds. (cdc.gov)
However, odor provides insufficient warning of hazardous concentrations. (cdc.gov)
at high concentrations, its odor can be sharp and suffocating. (cdc.gov)
While all detected concentrations were below the regulation limits, the obnoxious malodor associated with these compounds contributes to the difficulty in finding a location for new sites due to the annoyance caused to the population surrounding the area. (clemson.edu)
Fair concentrations, although below the odor threshold were found for cis- and trans-linaloloxide. (ives-openscience.eu)
Most of the studied products showed low levels of aroma compounds, benzenoids apart, however in some samples, few compounds were present in high concentrations beyond the odor threshold, with the potential ability to modify the sensory profile of a wine. (ives-openscience.eu)
0.05) higher oleic acid content and concentrations of nonanal, octanal and decanal associated with fatty odor while, the LYD meat had a higher number of pyrazines associated with roasty odor. (animbiosci.org)
www.caslab.com An Employee-Owned Company Reduced Sulfur Reduced Sulfur Analysis by ASTM 5504 Reduced sulfur compounds, such as sulﬁdes and mercaptans, tend to have very distinctive odors that may be detected at extremely low concentrations. (documents.pub)
Reduced sulfur compounds, such as sulfides and mercaptans, tend to have very distinctive odors that may be detected at extremely low concentrations. (documents.pub)
To identify the potential sources of the odor and the concentrations of air pollutants making up the odor, we collected wind speed and direction data and sampled for a suite of volatile organic compounds (VOCs), sulfur gases, and polycyclic aromatic hydrocarbons (PAHs) in the neighborhood and near suspected sources. (publiclab.org)
Adverse health impacts are hard to investigate for a variety of reasons, including because health effects can be triggered at much lower concentrations than can be sometimes measured with analytical equipment, health data for many odorous compounds is outdated and missing, and impacts of mixtures of odor compounds are not understood. (publiclab.org)
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)
Exposure to low concentrations of chlorine for prolonged periods may have destructive effects, as might very short-term exposure to high concentrations. (medscape.com)
Although the detection threshold concentrations of substances that evoke a smell are slight (Table 1), a concentration only 10 to 50 times above the detection threshold value often is the maximum intensity that can be detected by humans. (porkgateway.org)
Time-resolved transcript profiling by quantitative reverse transcription-PCR (qRT-PCR) revealed that the lowest p-cresol concentrations just affording cmh and hbd expression (response threshold) ranged between 1 and 10 nM, which is even more sensitive than the respective odor receptors of insects. (uni-oldenburg.de)
As the table Odorous Compounds In Wastewater shows, three major odorous compounds naturally occurring in the treatment process, hydrogen sulfide, amines and mercaptans, are detectable by the human nose at extremely low concentrations. (acwwa.com)

By definition, volatile organic compounds (VOCs) are organic compounds that easily become vapor or gases. (clemson.edu)
Many VOCs are hazardous air pollutants and often known for their low, often unpleasant, threshold odor, which can be below parts per billion in some cases. (clemson.edu)
For comparison, we also took general area air samples for hydrogen sulfide (H 2 S), formaldehyde, and volatile organic compounds (VOCs) in the office and in two nearby businesses in the same building. (cdc.gov)
For comparison, we also sampled for H 2 S, formaldehyde, and VOCs in two nearby businesses where there had been no odor complaints. (cdc.gov)
While volatile organic compounds (VOCs) are categorized as man-made or industrial chemicals, MVOCs are naturally occurring. (molekule.com)
The objective of this study was to compare odorous volatile organic compounds (VOCs) emitted from illicit drug samples of marijuana, cocaine, and heroin to surrogate smell formulations using simultaneous sensory (via human olfaction) and chemical analyses. (iastate.edu)
Use of solid phase microextraction (SPME) allowed VOCs in drug headspace to be extracted and pre-concentrated on site, and analyzed by multidimensional gas chromatography-mass spectrometry-olfactometry (MDGC-MS-O). Use of MDGC-MS-O allowed for further separation of odorous compounds and simultaneous detection by the human nose of the separate odor parts that make up the total aroma of these drugs. (iastate.edu)
A 1 g marijuana surrogate lacked in odor active acids, aldehydes, ethers, hydrocarbons, N-containing, and S-containing VOCs and was overabundant in odor active alcohols and aromatics compared with real marijuana. (iastate.edu)
ABSTRACT Published emission data of volatile organic compounds (VOCs) from building materials and furnishings are reviewed. (moam.info)
1. INTRODUCTION Building materials have been recognized as one of the major sources of volatile organic compounds (VOCs) in indoor environments. (moam.info)
Many paints, varnishes, adhesives, cleaners and other products used in the maintenance and remodeling of buildings give off volatile organic compounds (VOCs) - chemicals that evaporate in the air - that could lead to indoor air quality problems. (montgomerycountymd.gov)
A common misconception regarding the "off-gassing" of VOCs is that it ceases once the paint or other substance is dry, or if there is no detectable odor. (montgomerycountymd.gov)

Detectable odors can have a significant impact on people by affecting human emotions as well as having physiological impacts on the olfactory system. (porkgateway.org)

The human nose is very sensitive and has the ability to detect odors that are below the detection level of any currently available device. (aqmd.gov)

However, since this compound has an extremely unpleasant odor and the odor threshold is quite low, it is unlikely that significant human exposure to methyl mercaptan will occur, except possibly in the vicinity of sewage treatment plants or industrial facilities or in the workplace. (cdc.gov)
Usually the odor has a somewhat sweetish but unpleasant typical character and is readily identifiable, particularly if the dentures are placed in a plastic bag and smelled after several minutes. (medscape.com)

ASTM D5504 is a useful method for the diﬀerentiation and quantiﬁcation of many of these odor-causing sulfur compounds. (documents.pub)
ASTM D5504 is a useful method for the differentiation and quantification of many of these odor-causing sulfur compounds. (documents.pub)
Since many sulfur compounds are not stable in stainless steel canisters, such as Summa canisters, air samples for this analysis should be collected in Tedlar bags. (documents.pub)
Please contact the lab for more information on sampling media for sulfur compounds. (documents.pub)
Due to the unstable and reactive nature of many sulfur compounds, full compliance of the method requires analysis of the samples within 24 hours of collection. (documents.pub)
Stock Standard Solutions of Volatile Sulfur Compounds. (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)
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)
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)
It is believed to be due to sulfur compounds in the clouds, and possibly complex organic compounds in the Great Red Spot. (adlerplanetarium.org)
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)

They are not based on avoidance of odors, and many chemical odors can be detected by smell at levels below exposure guidelines. (cdc.gov)
Exposure possibilities include acute low levels, acute high levels, and chronic low levels. (medscape.com)
Most poisonings fall into this category and are caused by household exposure to low-concentration cleaning products. (medscape.com)
The American Conference of Governmental Industrial Hygienists (ACGIH) proposes to reduce the eight-hour time-weighted average exposure threshold limit value (TLV) for benzene to 0.02 ppm and reduce the 15-minute short-term exposure limit (STEL) to 0.1 ppm. (ohsonline.com)
It is detected by the human nose at very low threshold levels, but can also desensitize the nose after short-term exposure. (wasteadvantagemag.com)

Some people can smell moldy or musty odors in dry places, while others cannot smell odors even in places that are clearly damp and moldy. (molekule.com)

We may smell odors that seem pleasing and natural, but in reality are not healthy. (molekule.com)

These include analyses for chlorophyll, the taste and odor compounds geosmin (trans-1,10-Dimethyl-trans-9-decalol) and MIB (2-methylisoborneol), and cyanobacterial toxins. (ysi.com)
here I'll concentrate on chlorophyll and the taste and odor compounds. (ysi.com)

The odors are from odorant compounds (including mercaptans) that are added to natural gas and can be smelled at very low odor threshold levels (around or below 1 part per billion - ppb). (aqmd.gov)
The lower the odor threshold, e.g. 1 part per trillion (ppt) for TCA (aka cork taint), the stronger the odorant. (midwestwinepress.com)
In short, low detection thresholds = strong odorant and high threshold = weaker odorant. (midwestwinepress.com)
An odorant is a substance capable of eliciting an olfactory response whereas odor is the sensation resulting from stimulation of the olfactory organs. (porkgateway.org)
Odor threshold is a term used to identify the concentration at which animals respond 50 percent of the time to repeated presentations of an odorant. (porkgateway.org)
Most often, however, odor threshold is interpreted as detection threshold, which identifies the odor concentration at which 50 percent of a human panel can identify the presence of an odor or odorant without characterizing the stimulus. (porkgateway.org)
The recognition threshold is the concentration at which 50 percent of the human panel can identify the odorant or odor, such as the smell of ammonia or peppermint. (porkgateway.org)

Comparison of the amount of volatile compounds isolated from the food with respective odor thresholds is used to calculate an "Odor Activity Value" (OAV) for each compound in a food, and therefore determines which compounds are responsible for the odorous character of the food. (usda.gov)

The odor detection threshold is the minimum concentration at which a wine odor is perceived by olfaction or smell and it is usually determined by smelling an individual chemical compound in water or ethanol (aka a standard). (midwestwinepress.com)
OAVs increase the further the concentration of a given compound in wine is above its detection threshold. (midwestwinepress.com)
This MBT "skunky" odor has a very low flavor detection threshold-as low as a few parts per trillion. (bierfrucht.com)
The compounds most abundant in headspace were not the most odor impactful when ranked by odor activity values (OAVs) (defined as ratio of concentration to odor detection threshold, ODT). (iastate.edu)
For example, ethyl acrylate has an odor detection threshold in the ppb range, but at that level the toxicity is very low. (noaa.gov)
Its abundance on Jupiter falls below the detection threshold of 2 ppm-this is good news for us as PH 3 is known to have an odor reminiscent of garlic or rotten fish. (adlerplanetarium.org)
Detection threshold is the term most frequently used when discussing odor research results associated with livestock operations. (porkgateway.org)

Whereas the first era of flavor research was directed to the gas chromatographic analysis (GC, GC-MS) and stock-taking of all volatile constituents of complex flavor and fragrance extracts, the main efforts during the last decade have been focused on constitutional and stereochemical features, chemoreception and sensory relevance as well as biogenesis and biotechnological synthesis of sensory active compounds. (perfumerflavorist.com)
Aroma stems from what sensory scientists refer to as volatile compounds, or odor compounds. (midwestwinepress.com)
This, however, is in contrast to other sensory systems where maximum intensities are many more multiples of threshold intensities. (porkgateway.org)

This means that H 2 S is a critical safety issue, as well as a nuisance odor compound. (wasteadvantagemag.com)

The enantioγselectivity of flavor compounds was still questioned as recently as 1982. (perfumerflavorist.com)
Although there is a variety of methods available for chirospecific analysis, gas chromatography (GC ) is the preferred method for analysis of flavor compounds. (perfumerflavorist.com)
GC62674 Damascenone Damascenone is a potent flavor compound, possessing an extremely low odor threshold of 0.002 ppb in water. (glpbio.cn)
The skunky flavor and smell come from a compound known as 3-methylbut-2-ene-1-thiol, or MBT for short. (bierfrucht.com)
Coconut water is a tropical beverage with a distinctive odor and flavor that has until now not been adequately characterized. (unitn.it)
This study presents the method and results of threshold values of compounds important for orange juice flavor obtained by using a deodorized orange juice matrix as the dilutant. (usda.gov)
These results show the importance non-soluble compounds on odor and flavor perception. (usda.gov)
Thresholds for flavor volatiles have been traditionally calculated in water or air, but they may vary widely in more complex matrices such as milk, gels, or fruit slurries. (usda.gov)
The relative OAV of some compounds had changed, indicating a different contribution of these compounds to OJ flavor when their OAV was calculated in RPO. (usda.gov)
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)
Luckily that each of these compounds has its own distinct flavor and the ratio of these various components in the cannabis flower can impact the effects of the drug. (u9m.org)

This report highlights the importance of an individual chemical's odor impact in the olfactory identification of marijuana, cocaine, and heroin. (iastate.edu)
This factsheet explains the terminology used to describe odorants and odor, how the human olfactory system works, and how humans respond to odor. (porkgateway.org)
Describe the human olfactory system and how it responds to odor. (porkgateway.org)
Consequently, olfactory acuity and like or dislike of an odor decrease with age. (porkgateway.org)
Olfactory sensors based on odor-binding proteins (OBPs) have been utilized to analyze pollutants in food and air samples, while their application for the detection of typical odor-causing compounds in drinking water is rarely reported, partly due to the lack of knowledge about the binding properties of odorants. (springeropen.com)
The ambient air in the person, their olfactory acuity, as well are two relevant components to immediate environment of a smoker as their annoyance threshold (U.S. this. (who.int)

Compounds tested were verified for purity by GC/MS and GC/O. Orthonasal and retronasal thresholds for esters were twice (methyl butanoate) to thirty times (ethyl propanoate) higher in the orange juice matrix than published values in water. (usda.gov)
In addition to the production of rotten egg aromas, secondary reductive odors such as cooked vegetables, onion and cabbage are formed from sulphur containing compounds such as thioacetic acid esters and mercaptans due to too low redox potential of the wine (Brajkovich et al. (ucdavis.edu)

Jupiter's atmosphere is composed of a variety of chemicals and compounds, but the most abundant are molecular hydrogen (H 2 ), and helium, He. (adlerplanetarium.org)
In the cases described in this article, oxidizers such as hydrogen peroxide and chlorine were tested but not suitable for elimination of the offending odor. (wasteadvantagemag.com)
When sodium permanganate is injected into leachate, in minutes, it reacts with dissolved hydrogen sulfide, reducing odor emissions to zero. (wasteadvantagemag.com)

An odor threshold is the lowest concentration of a certain odor compound that is perceivable by the human sense of smell. (sentryair.com)
Terpenes for example ranged from 0.04 µg/L to 19.1 µg/L, with three samples above 15 µg/L. In one case, a sample was found to have a concentration of a cyclic terpene (1,8-cineole) above the odor threshold. (ives-openscience.eu)
In short, an OAV is determined by taking the concentration of a specific aroma compound in wine and dividing it by the odor threshold. (midwestwinepress.com)
The concentration of these compounds depends mainly on the conditions employed for pretreatment. (atamanchemicals.com)
For this reason, smell often identifies the presence or absence of odor rather than quantifies its intensity or concentration. (porkgateway.org)
Like and dislike of a particular odor can change with odor concentration or intensity. (porkgateway.org)

Furan appears as a clear colorless liquid with a strong odor. (atamanchemicals.com)
however, approximately one in one thousand persons is unable to detect the strong odor of this mercaptan. (porkgateway.org)

In this sense, oenological tannins, despite the technological treatments, could contain aromatic compounds of the botanical species they belong to and release them to the wine. (ives-openscience.eu)
Aromatoleum aromaticum EbN1 is a specialist in anaerobic degradation of aromatic compounds, employing a complex and substrate-specifically regulated catabolic network. (uni-oldenburg.de)
The findings have implications for the enigmatic persistence of dissolved organic matter (escape from biodegradation) and for the lower limits of aromatic compounds required for bacterial growth. (uni-oldenburg.de)

Free volatile compounds and glycosidic precursors have been analysed thanks to SPE- and SPME-GC-MS techniques. (ives-openscience.eu)
From this, it has been identified that direct precursors become cysteinlated or glutathionylated for each compound during fermentation. (ucdavis.edu)
The pathway of formation for these aromatic precursors is speculated to involve four important steps: enzymatic oxidation, metabolic processing of unsaturated fatty acids, cysteinlated or glutathionylated conjugation to aldehydes, and a β-lyase cleavage during alcoholic fermentation to release the aromatic compound. (ucdavis.edu)
In this study, the influence of glycation derived from α-dicarbonyl compounds (α-DCs), precursors of AGEs, on digestive behaviors of ovalbumin (OVA) was investigated in a two-step simulated gastrointestinal (GI) model. (bvsalud.org)

However, this compound was identified in both the influent and the effluent of a wastewater treatment plant. (cdc.gov)
Oxidizing agents can be introduced to landfill leachate during wastewater treatment to kill the offending bacteria and reduce odor emissions to zero. (wasteadvantagemag.com)
However, the odor that occurs often draws criticism from nearby communities as well as wastewater treatment plants on the receiving end due to stricter regulations on effluent discharge. (wasteadvantagemag.com)
Odors are a natural part of the substances handled and treated at any wastewater treatment plant. (acwwa.com)

Meanwhile, chiral discrimination has been recognized as one of the most important principles in biological activity as well as odor perception. (perfumerflavorist.com)
Define odor and how perception is quantified. (porkgateway.org)

On October 24, 2015, SCAQMD received the first air quality complaints resulting from sulfur type odors associated with the natural gas leak from Well SS-25. (aqmd.gov)
Through February 11, 2016, SCAQMD received over 2340 complaints (see detail here) regarding odors from the leak. (aqmd.gov)
The aerial map shows the general location of odor complaints received by SCAQMD and the location of air samples taken by SCAQMD inspectors during complaint investigation activities (see complaint air sampling data ). (aqmd.gov)
Between 2004 and 2017, Denver received 1,322 odor complaints. (publiclab.org)
Numerous neighbor complaints about odors associated with the pumping and transferring of leachate to the local municipality were received. (wasteadvantagemag.com)

The environmental evaluation included air sample collection for carbon dioxide, temperature, and relative humidity as well as for contaminants potentially derived from heated mail as a result of irradiation, including small and total particulate, volatile organic compounds, formaldehyde, ozone, carbon monoxide, toluene diisocyanate, and polynuclear aromatic hydrocarbons. (cdc.gov)

Both of these compounds are odorless and tasteless. (adlerplanetarium.org)
The third most abundant compound is methane, CH 4 , another tasteless and odorless gas. (adlerplanetarium.org)
The naturally occurring chemical however, like the compound found in Jupiter's atmosphere, is odorless. (adlerplanetarium.org)

The results showed that HPCD treatment depletes short- and medium-chain alcohols, while TP treatment triggers an increase in aldehydes, ketones, and 2-acetyl-1-pyrroline, an aroma compound active at low odor thresholds and characterized by "popcorn" and "toasted" odor descriptors. (unitn.it)

The aroma components in black tea prepared from MeJA-treated fresh tea leaves were extracted using headspace solid-phase microextraction (HS-SPME) and were analyzed using gas chromatography-mass spectrometry (GC-MS) and GC-olfactometry (GC-O). Forty-five volatile compounds were identified. (zju.edu.cn)
There are small amounts of highly odorous compounds present in headspace of these drugs, with very low odor detection thresholds, that are more likely responsible for contributing to the overall odor of these drugs. (iastate.edu)
Previous reports of the most abundant compounds in headspace can mislead researchers when dealing with whole odor of these drugs. (iastate.edu)

Acetone is a colorless, volatile, and highly flammable organic compound with the chemical formula (CH3)2CO. (intactone.com)
Furan is a heterocyclic organic compound, consisting of a five-membered aromatic ring with four carbon atoms and one oxygen. (atamanchemicals.com)
Furan or furfuran is a heterocyclic aromatic organic compound. (atamanchemicals.com)
Furan is a colourless, volatile organic compound that is used in some chemical manufacturing industries and may also be found in low levels in some foods, most notably in foods that undergo thermal treatment such as canning or jarring. (atamanchemicals.com)
It is an aromatic organic compound with the molecular formula C6H6. (ohsonline.com)

Results demonstrated a wide array of gaseous chemical compounds present in the air of an industrial site. (clemson.edu)
So that musty odor you are smelling is not "just" mold but is a result of the chemical compounds released at different stages of the mold's growth. (molekule.com)
Chemical compounds containing such rings are also referred to as furans. (atamanchemicals.com)

Methyl mercaptan is a naturally occurring gaseous compound produced as a result of microbial degradation and present in trace amounts in natural gas. (cdc.gov)
Now certain molds can produce mycotoxins and microbial volatile organic compounds which can affect humans. (currenenvironmental.com)
As mold forms, grows, and spreads, it emits gasses known as microbial volatile organic compounds (MVOCs). (molekule.com)

CBD has an aromatic property, and this ingredient is one of the most potent and potent compounds found in the cannabis plant. (u9m.org)
For many years, as pharmaceutical associated with the handling of these compounds were discovered that were increasingly potent drug entities in therapeutic and efficacious but could research, development, and manufac- potentially elicit human (and therefore turing. (cdc.gov)

Furan, as well as methyl-substituted furan derivatives, 2-methylfuran and 3-methylfuran, can form in foods through multiple pathways that involve different naturally-present precursor compounds (e.g. polyunsaturated fatty acids, sugars, ascorbic acid) that undergo thermal degradation or chemical rearrangement during food processing. (atamanchemicals.com)

Permanganate application successfully controls obnoxious odors that are released when storing and transferring landfill leachate. (wasteadvantagemag.com)

So, let's start with two (possibly new) concepts: odor detection thresholds and Odor Active Values (OAVs). (midwestwinepress.com)
Nevertheless, OAVs are a great starting point, a first approximation, to understanding what compounds are in the driver seat for aroma in wine and that is exactly what we're going to focus on in this article - unique impact odorants. (midwestwinepress.com)
The OAV of these compounds in two different orange juices are calculated to illustrate the differences of OAVs obtained between the two methods (water or juice). (usda.gov)

Flavors and fragrances are complex mixtures of volatile compounds and generally consist of hundreds of substances with different functionalities. (perfumerflavorist.com)
The high resolution power of GC is particularly necessary to determine the enantiomeric composition in complex mixtures and to determine trace compounds with a very low odor threshold. (perfumerflavorist.com)

Other compounds (norisoprenoids, fatty acids and alcohols) were present in traces. (ives-openscience.eu)

As these materials are consumed, compounds are made (think stomach acids) by the consumption of the material as well as the building materials breaking down into other compounds. (currenenvironmental.com)
If you expose these alpha acids to UV-B light from the sun, they will combine with sulfur in the beer from the malt and give a lovely MBT compound and aroma. (bierfrucht.com)
In addition to thermally processed foods, the digestive tract may be an additional site for exogenous AGE formation since the MR would possibly occur between (oligo-)peptides, free amino acids, and reactive MR products (MRPs) such as α-dicarbonyl compounds (α-DCs) along the digestion. (bvsalud.org)

A variety of gaseous compounds were detected at a rendering plant area, in different sites of the plant, with the majority of the compounds belonging to carboxylic acid and aldehyde functionality. (clemson.edu)
Using appropriate chemistry approaches, it was possible to attach different functionalities to the synthesized PDLLA-PEG-COOH nanoparticles, tuning their properties so they can specifically target and capture different gaseous compounds. (clemson.edu)
These findings are expected to provide sufficient and strong theoretical and methodological evidence for the development of a large-scale process for the synthesis of amine-functionalized nano materials to be used for environmental remediation of relevant gaseous compounds. (clemson.edu)

Generally, humans can distinguish between more than 5,000 odors but some individuals experience anosmia (smell blindness) for one or more odors. (porkgateway.org)

While other things - like a lack of ventilation or high levels of humidity - can make a musty odor more noticeable, they typically are not the primary cause of the smell. (molekule.com)
These materials are typically inhibited with low levels (ppm range) of antioxidants to prevent premature polymerization chain reactions and these inhibitors may require dissolved oxygen to be effective. (noaa.gov)
It has a distinctive sweet odor and is typically found in liquid form at room temperature. (intactone.com)

These odors are oﬀensive to many individuals, and in some cases may result in irritative symptoms, such as headaches and nausea. (documents.pub)
Odors have been implicated in depression and nausea as well. (porkgateway.org)

Acetone is a reactive compound and can participate in various chemical reactions. (intactone.com)

It has a distinctive sweet, fruity odor. (intactone.com)

The data presented is part of a continuing study to provide the industry with threshold guidelines more adequate for the use of flavors in citrus juices. (usda.gov)

The odor threshold for phosgene is 5 times higher than the OSHA PEL. (cdc.gov)

Drug quantity, age and adulterants can affect VOC emissions and their odor impact. (iastate.edu)
Leachate production is a significant concern for municipal solid waste (MSW) landfills and causes substantial odor emissions that have negative health and environmental effects. (wasteadvantagemag.com)

It also may be a useful tool during odor investigations when a complex matrix is present or the human receptors are unable to adequately characterize the odor. (documents.pub)

Next to understanding how such pollutants can be degraded by microorganisms, it is also relevant to determine the microorganisms' lower threshold of responsiveness. (uni-oldenburg.de)

Advanced glycation end-products (AGEs) are a group of heterogeneous compounds formed during the Maillard Reaction (MR) and have been proven to be detrimental to human health. (bvsalud.org)
Some of the more powerful organic compounds released through "off-gassing" are below human odor thresholds. (montgomerycountymd.gov)
At Brightseed, we use our proprietary platform, Forager-which is powered by metabolomics analysis, artificial intelligence, and machine learning-to identify and map millions of undiscovered compounds that have the potential to support human health. (brightseedbio.com)
In this study, the binding affinity and mechanism of human odor-binding protein OBP2a to 14 typical odorants in water were first assessed using fluorescent competitive binding assays and molecular docking techniques. (springeropen.com)

Furan is a clear, colorless, flammable liquid cyclic ether with an ethereal odor. (atamanchemicals.com)

But the number of scents known by humans is dwarfed by the substantial number of natural compounds still undiscovered. (brightseedbio.com)

The low MW materials (example vinyl chloride) are extremely flammable gases. (noaa.gov)
Acetone is highly flammable and has a low flash point of around -20°C (-4°F). It can readily ignite when exposed to an open flame or spark. (intactone.com)
Benzene or benzol is a clear, colorless, highly flammable liquid with a kind of sweet odor. (ohsonline.com)

Anatomy4

Diseases1

Chemicals and Drugs8

Psychiatry and Psychology9

Phenomena and Processes7

Health Care1

Concentrations17

VOCs12

Detectable1

Ability to detect odors1

Unpleasant2

Sulfur compounds13

Exposure5

Musty odors1

Smell odors1

Taste and odor2

Odorant7

Respective odor1

Detection threshold7

Sensory3

Nuisance Odor1

Flavor11

Olfactory6

Esters2

Hydrogen3

Concentration6

Strong odor2

Aromatic compounds3

Precursors4

Wastewater4

Perception2

Complaints5

Carbon monoxide1

Odorless3

Aldehydes1

Headspace3

Organic compound5

Chemical compounds3

Microbial3

Potent2

Methyl1

Obnoxious1

OAVs3

Mixtures2

Alcohols1

Acids3

Gaseous3

Anosmia1

Typically3

Nausea2

Reactive1

Distinctive1

Juices1

OSHA PEL1

Emissions2

Receptors1

Pollutants1

Human4

Cyclic1

Humans1

Flammable3