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Showing 13 to 24 of 1356 entries
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The Development and Application of Novel IR and NMR-Based Model for the Evaluation of Carminative Effect of Artemisia judaica L. Essential Oil.

International journal of analytical chemistry

Alzweiri M, Alrawashdeh IM, Bardaweel SK.
PMID: 25614741
Int J Anal Chem. 2014;2014:627038. doi: 10.1155/2014/627038. Epub 2014 Dec 29.

Artemisia judaica L. is a medicinal plant that is traditionally used to relieve abdominal pains through its carminative activity. In this study, spectroscopic analysis was employed to investigate the carminative activity associated with A. judaica. Using infrared spectroscopy, the...

Cannabis sativa: The Plant of the Thousand and One Molecules.

Frontiers in plant science

Andre CM, Hausman JF, Guerriero G.
PMID: 26870049
Front Plant Sci. 2016 Feb 04;7:19. doi: 10.3389/fpls.2016.00019. eCollection 2016.

Cannabis sativa L. is an important herbaceous species originating from Central Asia, which has been used in folk medicine and as a source of textile fiber since the dawn of times. This fast-growing plant has recently seen a resurgence...

Ultrasound-assisted Extraction of Ursolic Acid from the Flowers of .

Pharmacognosy magazine

Alves Monteath SAF, Maciel MAM, Vega RG, de Mello H, de Araújo Martins C, Esteves-Souza A, Gattass CR, Echevarria A.
PMID: 28539719
Pharmacogn Mag. 2017 Apr-Jun;13(50):265-269. doi: 10.4103/0973-1296.204557. Epub 2017 Apr 18.

OBJECTIVE: To evaluate the isolation of ursolic acid (UA) (1) from methanol extracts of MATERIALS AND METHODS: The UA was isolated from vegetal material by percolation at room temperature and by ultrasound-assisted extraction. The preparation of derivatives was performed...

Sulfur-Containing Monoterpenoids as Potential Antithrombotic Drugs: Research in the Molecular Mechanism of Coagulation Activity Using Pinanyl Sulfoxide as an Example.

Frontiers in pharmacology

Nikitina LE, Kiselev SV, Startseva VA, Bodrov AV, Azizova ZR, Shipina OT, Fedyunina IV, Boichuk SV, Lodochnikova OA, Klochkov VV, Galiullina LF, Khaliullina AV.
PMID: 29515444
Front Pharmacol. 2018 Feb 19;9:116. doi: 10.3389/fphar.2018.00116. eCollection 2018.

In this article we present the synthesis of enantiomerically pure sulfoxide and study the influence of this compound on hemostasis. Detailed NMR studies and molecular dynamics simulations using sodium dodecyl sulfate (SDS) membrane models indicated that the bicyclic fragment...

A detailed view on 1,8-cineol biosynthesis by .

Beilstein journal of organic chemistry

Rinkel J, Rabe P, Zur Horst L, Dickschat JS.
PMID: 28144299
Beilstein J Org Chem. 2016 Nov 04;12:2317-2324. doi: 10.3762/bjoc.12.225. eCollection 2016.

The stereochemical course of the cyclisation reaction catalysed by the bacterial 1,8-cineol synthase from

Assessment of Volatile Chemical Composition of the Essential Oil of Jatropha ribifolia (Pohl) Baill by HS-SPME-GC-MS Using Different Fibers.

Journal of analytical methods in chemistry

da Silva CE, da Costa WF, Minguzzi S, da Silva RC, Simionatto E.
PMID: 24371539
J Anal Methods Chem. 2013;2013:352606. doi: 10.1155/2013/352606. Epub 2013 Nov 24.

The chemical composition of essential oil and volatile obtained from the roots of Jatropha ribifolia (Pohl) Baill was performed in this work. The Clevenger extractor was utilized in hydrodistillation of oil and chemical composition determined by gas chromatography coupled...

Extraordinary Second Harmonic Generation in tungsten disulfide monolayers.

Scientific reports

Janisch C, Wang Y, Ma D, Mehta N, Elías AL, Perea-López N, Terrones M, Crespi V, Liu Z.
PMID: 24984953
Sci Rep. 2014 Jul 02;4:5530. doi: 10.1038/srep05530.

We investigate Second Harmonic Generation (SHG) in monolayer WS₂ both deposited on a SiO₂/Si substrate or suspended using transmission electron microscopy grids. We find unusually large second order nonlinear susceptibility, with an estimated value of d(eff) ~ 4.5 nm/V...

Inhibition of feeding by a generalist insect due to increased volatile leaf terpenes under nitrate-limiting conditions.

Journal of chemical ecology

Mihaliak CA, Couvet D, Lincoln DE.
PMID: 24301540
J Chem Ecol. 1987 Nov;13(11):2059-67. doi: 10.1007/BF01012871.

Nitrogen-limited plants ofHeterotheca subaxillaris accumulate greater quantities of leaf volatile terpenes than do nitrogen-rich plants. A series of feeding trials were performed to determine if such nitrate-limited plants are better defended against generalist-feeding insect herbivores. Soybean looper (Pseudoplusia includens)...

Frontalin in the male mountain pine beetle.

Journal of chemical ecology

Ryker LC, Libbey LM.
PMID: 24414834
J Chem Ecol. 1982 Nov;8(11):1399-409. doi: 10.1007/BF01403103.

Frontalin andexo-brevicomin were identified by GC-MS in air drawn over maleDendroclonus ponderosae Hopk. (MPB) from Oregon that had joined females for 1-2 days in the bark of lodgepole and ponderosa pine logs. Unfed males releasedexo- andendo-brevicomin but not frontalin....

Effect of postharvest dehydration on the composition of pinot noir grapes (Vitis vinifera L.) and wine.

Food chemistry

Moreno JJ, Cerpa-Calderón F, Cohen SD, Fang Y, Qian M, Kennedy JA.
PMID: 26049988
Food Chem. 2008 Aug 15;109(4):755-62. doi: 10.1016/j.foodchem.2008.01.035. Epub 2008 Feb 01.

This study was conducted in order to improve our understanding of how phenolics and aroma compounds change in wine grapes during postharvest dehydration. Pinot noir grapes grown in the Willamette Valley of Oregon were harvested at 22.0 and 24.0°Brix....

Deposition Fluxes of Terpenes over Grassland.

Journal of geophysical research. Atmospheres : JGR

Bamberger I, Hörtnagl L, Ruuskanen TM, Schnitzhofer R, Müller M, Graus M, Karl T, Wohlfahrt G, Hansel A.
PMID: 24383048
J Geophys Res Atmos. 2011 Jul 27;116. doi: 10.1029/2010JD015457.

Eddy covariance flux measurements were carried out for two subsequent vegetation periods above a temperate mountain grassland in an alpine valley using a proton-transfer-reaction - mass spectrometer (PTR-MS) and a PTR-time of flight - mass spectrometer (PTR-TOF). In 2008...

The GC/MS Analysis of Volatile Components Extracted by Different Methods from Exocarpium Citri Grandis.

Journal of analytical methods in chemistry

Xie Z, Liu Q, Liang Z, Zhao M, Yu X, Yang D, Xu X.
PMID: 24349825
J Anal Methods Chem. 2013;2013:918406. doi: 10.1155/2013/918406. Epub 2013 Nov 17.

Volatile components from Exocarpium Citri Grandis (ECG) were, respectively, extracted by three methods, that is, steam distillation (SD), headspace solid-phase microextraction (HS-SPME), and solvent extraction (SE). A total of 81 compounds were identified by gas chromatography-mass spectrometry including 77...

Showing 13 to 24 of 1356 entries