Sentences with word «pinene»

That can be prevented if there's pinene in the cannabis.»

Companies such as NaPro Research and Phylos have begun working out how to breed cannabis varieties with specific levels of popular terpenes — including limonene and pinene as well as myrcene, which some believe potentiates THC's effects — for a designed experience.

For example, he cites work suggesting alpha pinene — a terpene that gives some marijuana a fresh pine scent — might help preserve a molecule called acetylcholine, which has been implicated in memory formation.

To accurately predict how alpha - pinene reacts in the troposphere, and thus how it affects climate and air quality, researchers need a detailed understanding of its molecular structure.

Although the initial mixture of compounds formed from reactions of pinene is very complex, all the carbon was found to end up in «reservoirs» that are relatively stable and won't react further in the atmosphere.

Because alpha - pinene exists in the gas phase only at low concentrations, requiring highly sensitive experimental techniques, no one had previously identified its gas - phase structure.

This set of rotational constants describes the complete structure of alpha - pinene gas.

The carbon atoms in pinene do not disappear after their initial introduction to the atmosphere — they turn into hundreds of different compounds through a cascade of chemical reactions.

Though pinene is naturally emitted, its behavior is comparable enough to better anticipate the way other compounds, like those in pollutants, smog, and haze, will react in the air.

Isaacman - VanWertz picked pinene because it has been extensively studied, so he could use previous work to make sense of his observations.

Responsible substances for these effects are cinnamaldehyde, tannin, mannitol, coumarins and the essential oils known as aldehydes, eugenol and pinene found in cinnamon.

The researchers let the needle scent α - pinene react with both «normal» ozone (16O3) and «labeled,» heavier ozone (18O3), in order to determine the portion of heavy oxygen atoms (18O) in the formed ELVOCs.

Alpha - pinene in its solid phase has an already determined bicylic or two - ring structure.

Grapefruit: contains citric acid, natural sugars, essential oils like limonene, pinene and citral.

In the current work, the team filled the chamber with sulfur dioxide and pinnanediol (an oxidation product of alpha - pinene) and then generated hydroxyl radicals (the dominant oxidant in Earth's atmosphere).

In research published in the Proceedings of the National Academy of Sciences in 2012, Donahue and colleagues showed conclusively that organic molecules given off by pine trees, called alpha - pinene, are chemically transformed multiple times in the highly oxidizing environment of the atmosphere.

The new analysis can help scientists better detect and understand how alpha - pinene — and potentially other similar molecules — react with other gases in the atmosphere, a process which produces pollutants and particles called aerosols that affect health and climate.

«The molecular structure of a forest aroma deconstructed: Researchers determine the molecular structure of alpha - pinene, a compound produced by pine trees that's important for air quality and climate.»

They repeated this analysis for all naturally occurring isotopic versions of alpha - pinene, in which carbon - 13 isotopes replace different carbon - 12 isotopes in the molecule.

The main monoterpene is alpha - pinene, of which forests release about 50 trillion grams each year into the atmosphere's lowest layer, the troposphere.

Researchers have now, for the first time, accurately determined the chemical structure of one of these compounds in its gas phase, a molecule called alpha - pinene, which is also produced by tropical forests.

Now that the researchers have the structure of alpha - pinene, they are better able to model the first steps of nature's aerosol formation in the atmosphere.

In the troposphere, however, alpha - pinene is a gas and is found to have notable changes in structure due to forces exerted by the crystal structure.

The light of the «sun» spurred the chemistry of the pinene inside the chamber and simulated the reactions that would occur in the atmosphere.

Isaacman - VanWertz and his collaborators were able to, for the first time, fully track the carbon in the pinene molecules from start to finish as they underwent chemical changes as they would in the atmosphere.

For this project, Isaacman - VanWertz studied the smell of pine, which is made of an organic compound known as pinene.

«We have focused our efforts on the oxidation of α - pinene, because it accounts for about half of global monoterpene emissions,» explains Dr. Mikael Ehn from the University of Helsinki, who is the first author of this study and did the pioneering work for the discovering of ELVOCs.

On the other hand, β - pinene, myrcene and isoprene, produce much less ELVOC's, which are an important biogenic sources for the formation of particles in the atmosphere,» emphasizes Dr. Torsten Berndt of TROPOS, who was involved in all three publications.

In the experiments, five biogenic organic gases (limonene, α - pinene, β - pinene, myrcene and isoprene) were passed through the laminar flow tube and then examined by a CI - APi - TOF mass spectrometer.

The scent molecule alpha - pinene, which survives nearly 40 hours in an ozone - free environment, survived fewer than 10 hours when ozone rose to 60 parts per billion and only 1 hour when ozone was at 120 parts per billion.

This includes the role of oxidized volatile organic compounds, such as limonene and alpha - pinene, the typical scents of the citrus fruits and coniferous forests, in aerosol formation.

Secondary organic aerosols (SOAs) are microscopic particles created when ozone reacts with volatile organic gases such as limonene - the chemical name for the smell of oranges - or its cousin α - pinene, which is part of the smell of pine trees.

This shows that the role of ozone (the oxidant of α - pinene and other monoterpenes) has been underestimated.

«Our results show that the ozonolysis of monoterpenes like α - pinene or limonene leads to a greater efficiency of ELVOC production than a well - known oxidation via OH - radicals.

The team injected citric, adipic, and fulvic acid into the chamber as seed aerosols, and then introduced a secondary organic aerosol from α - pinene, a carbon - containing compound derived from pine trees.

«Effect of Hydrophilic Organic Seed Aerosols on Secondary Organic Aerosol Formation from Ozonolysis of α - Pinene.»

The effect is especially pronounced when alpha - pinene is low.

Based on laboratory experiments, PNNL chemist Alla Zelenyuk has found that manmade pollutants, like polycyclic aromatic hydrocarbons, also known as PAHs, can dramatically increase the number and mass of particles produced by plant - based alpha - pinene - the chemical that gives pine trees their scent.

A dash of pyrene added to a low concentration of alpha - pinene yields aerosols that are five times the mass, and 200 times as many, than that produced by alpha - pinene alone.

In another set of experiments, they coated the sulfate particles with atmospheric products of α - pinene, the gas responsible for that distinctive pine tree smell, and then added IEPOX.

To test the assumption, the team created SOAs from alpha - pinene and limonene, natural aerosol progenitors responsible for the smell of pine trees and lemons.

According to a comprehensive review of essential oils and their repellent effects, researchers concluded that «individual compounds present in [essential oils] with high repellent activity include α - pinene, limonene, citronellol, citronellal, camphor and thymol.»

Grapefruit: contains citric acid, natural sugars, essential oils like limonene, pinene and citral.

Another terpene, α - pinene is released by plants as a volatile defense mechanism, yet seems to decrease inflammation by inhibiting NF - κB (Nuclear Factor Kappa B).11 NF - κB regulates our immune response and is turned on in response to harmful states like infection.

Fennel seeds compose of health benefiting volatile essential oil compounds such as anethole, limonene, anisic aldehyde, pinene, myrcene, fenchone, chavicol, and cineole.

Fennel seeds also have essential oils like anethol, fenchone, limonene, pinene, myrcene, chavicol, and cineole.

The terpenes are volatile compounds found in angelica's essential oil - mainly α - pinene, β - pinene, δ -3-carene, limonene, α - phellandrene, β - phellandrene, and p - cymene - and have shown anti-inflammatory and antispasmodic effects.

Myrtle leaves contain three monoterpenes, limonene, cineole, and alpha - pinene, which are sometimes collectively referred as myrtol.