Results 31 to 40 of about 25,456 (225)

Survey of foliar monoterpenes across the range of jack pine reveal three widespread chemotypes: implications to host expansion of invasive mountain pine beetle

open access: yesFrontiers in Plant Science, 2015
The secondary compounds of pines (Pinus) can strongly affect the physiology, ecology and behaviors of the bark beetles (Coleoptera: Curculionidae, Scolytinae) that feed on sub-cortical tissues of hosts.
Spencer eTaft   +4 more
doaj   +1 more source

Characteristics and Quality Assessment of Oleoresin Production through Bore-hole Method in Chir-pine Under Narendranagar Forest Division, Uttarakhand, India

open access: yesIndonesian Journal of Social and Environmental Issues, 2023
The present study aimed to evaluate the Oleoresin quality in Chir-pine.  It was observed that the main compounds of Chir-pine’s Oleoresin were Rosin, α and β-pinene with the highest percentage and are considered products with high commercial value. There
Dharm Singh Meena   +3 more
doaj   +1 more source

A comparison of GC-FID and PTR-MS toluene measurements in ambient air under conditions of enhanced monoterpene loading [PDF]

open access: yes, 2010
Toluene was measured using both a gas chromatographic system (GC), with a flame ionization detector (FID), and a proton transfer reaction-mass spectrometer (PTR-MS) at the AIRMAP atmospheric monitoring station Thompson Farm (THF) in rural Durham, NH ...
Ambrose, Jesse L.   +9 more
core   +4 more sources

Genetic analysis and elite tree selection of the main resin components of slash pine

open access: yesFrontiers in Plant Science, 2023
Pine resin, as a natural material, has been widely used in food, pharmaceutical, and chemical industries. Slash pine (Pinus elliottii Engelm var.
Xianyin Ding   +9 more
doaj   +1 more source

Headspace volatiles isolated from twigs of Picea omorika from Serbia [PDF]

open access: yesArchives of Biological Sciences, 2020
The variability of volatiles isolated from twigs by the static headspace (HS) method in seven natural populations of Picea omorika from Serbia was investigated for the first time.
Nikolić Biljana   +6 more
doaj   +1 more source

Essential oil profiles of seeds, peels, and leaves obtained from Limnocitrus littoralis (Miq.) swingle species, in the Southcentral coast of Vietnam

open access: yesAll Life, 2022
The essential oils of seeds, peels, and leaves from Limnocitrus littoralis (Miq.) Swingle growing wildly on the southcentral coast of Vietnam were extracted by hydrodistillation method. The yields of the oils were recorded.
Thanh-Tu Thi Nguyen   +4 more
doaj   +1 more source

Research on aroma components in flowers and fruits of three varieties of jaboticaba

open access: yes浙江大学学报. 农业与生命科学版, 2021
The flowers and fruits of three varieties of jaboticaba including ‘Saba’ (‘Sb’), ‘Sijizaosheng’ (‘Sjzs’) and ‘Fukuoka’ were used to determine the aroma components by using head space-gas chromatography-mass spectrometry (HS-GC-MS) technology. The results
QIU Shanlian   +4 more
doaj   +1 more source

Influence of aerosol acidity on the chemical composition of secondary organic aerosol from β-caryophyllene [PDF]

open access: yes, 2010
The secondary organic aerosol (SOA) yield of β-caryophyllene photooxidation is enhanced by aerosol acidity. In the present study, the influence of aerosol acidity on the chemical composition of β-caryophyllene SOA is investigated using ultra performance ...
Chan, A. W. H.   +14 more
core   +2 more sources

Chemical Composition of Distilled Essential Oils and Hydrosols of Four Senegalese Citrus and Enantiomeric Characterization of Chiral Compounds [PDF]

open access: yes, 2017
Peels of four local Citrus species (Citrus sinensis L. Obsbeck, Citrus reticulata Blanco, Citrus maxima Burm. and Citrus aurantifolia christm.) grown in a same locality under the same climatic conditions were subjected to steam distillation.
Diop, Michel Bakar   +7 more
core   +1 more source

Unimolecular Reactions of Peroxy Radicals Formed in the Oxidation of α-pinene and β-pinene by Hydroxyl Radicals [PDF]

open access: yes, 2019
Atmospheric oxidation of monoterpenes (emitted primarily by evergreen trees) is known to contribute to the formation and growth of aerosol particles. While recent research has tied the formation of organic aerosol to unimolecular chemistry of the organic
Crounse, John D.   +5 more
core   +2 more sources

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