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Topic: Myrcene

	Relationship between a host plant compound, myrcene and pheromone production in the bark beetle, Ips paraconfusus (Site not responding. Last check: 2007-10-16)
		This indicates that myrcene induces or is a precursor for sex-specific pheromone biosynthesis.
		Myrcene was purified by GLC on a 3 m x 8 mm i.d.
		It is theoretically possible that myrcene could be converted to either ipsdienol or linalool via the monooxygenase present in the beetle; however, myrcene apparently is not converted to linalool in l.
	www.wcrl.ars.usda.gov /cec/papers/jip79.htm (3473 words)

	Patent 4252764: Process for preparing molding compositions
		The intimate mixture of myrcene and styrene polymer may be obtained by combining the myrcene with the styrene polymr by adding the myrcene compound to the polymerization system during preparation of the styrenic polymer.
		Alternatively, the myrcene compound can be combined with the styrenic polymer after polymerization, as for example, by adding it to the styrenic polymer in the polymer recovery steps such as during coagulation, stripping, washing, drying, etc., or by steeping the polymer in the presence of the liquid myrcene compound.
		In such situations, the present invention contemplates having the myrcene in contact with the styrenic resin during at least one of the forming operations wherein the polymer is heated to the point where it melts and then is shaped.
	www.freepatentsonline.com /4252764.html (3195 words)

	Male-specific conversion of the host plant compound, myrcene, to the pheromone (+)-ipsdienol, in the bark beetle ... (Site not responding. Last check: 2007-10-16)
		Myrcene, a host monoterpene, presumably is released primarily at the entrance hole from exuding oleoresin and beetle frass, and it enhances the attraction of D.
		In the present study, myrcene was converted to (S)-(+)-ipsdienol only in the male beetle, and racemic ipsdienol, released at rates comparable to the aggregation pheromones, inhibited the attraction of both sexes in the field.
		For example, Smith (1964) reported that the minimum percentages of myrcene and alpha-pinene in the oleoresin of 64 ponderosa pines in the central Sierra Nevada of California were higher (Myrcene the highest) than the sometimes trace amounts of delta-3-carene, B-pinene, and limonene.
	www.wcrl.ars.usda.gov /cec/papers/jce82.htm (3039 words)

	British Pharmaceutical Codex 1911: Oleum Pimentae Foliorum, Oil of Pimento Leaves. (Site not responding. Last check: 2007-10-16)
		This is due to polymerisation of the olefinic terpene myrcene, contained in the oil.
		Myrcene, on treatment with glacial acetic acid and sulphuric acid, yields dipentene and an oil of a lavender-like odour, which yields linalool after saponification, identified by its conversion into citral.
		Myrcene, therefore, bears the same relation to linalool as camphene to isoborneol, and pinene or dipentene to terpineol.
	www.ibiblio.org /herbmed/eclectic/bpc1911/pimenta-acri_oleu.html (380 words)

	References
		Myrcene is usually attributed to creating a pungent character in beer.
		Myrcene is very volatile and rarely survives in the finished beer.
		Like myrcene, humulene is unstable in the boil but the oxidation products of humulene survive into the finished beer where they are generally attributed to exhibit a herbal or spicy flavour.
	tvbeer.com /allensref4.htm (1480 words)

	ARS \| Publication request: Effects of Camphene, Myrcene, Caryophyllene Oxide, and Beta-Pinene on Consumption of Alfalfa ...
		Forty-five lambs (nine lambs/treatment) were individually fed alfalfa pellets sprayed with either camphene, myrcene, caryophyllene oxide, or beta-pinene at one of five concentrations in an ethanol carrier.
		Lambs were adapted to handling and individual pen feeding for 10 d and were maintained and fed alfalfa pellets in one group (except during 20-minute tests) at a mean total daily intake of 4.7% of BW (DM basis).
		Camphene and caryophyllene oxide tended to decrease intake (linear contrasts were P =.0651 and P =.0504, respectively), while myrcene and beta-pinene exerted no effect on consumption of alfalfa pellets by lambs during the 20-minute interval.
	ars.usda.gov /research/publications/publications.htm?SEQ_NO_115=138417 (266 words)

	RosbioBulgaria Ltd. (Site not responding. Last check: 2007-10-16)
		Composition: Camphene, myrcene, limonene, linalool, cinneol, linalyl acetate, terpineol, bornyl acetate, borneol, geranyl acetate, amyl - vinyl carbinol.
		Composition: alfa-pinene, beta-pinene, camphene, limonene, myrcene, etc. Fir Oil Obtained from the needles and bearing twigs of fir tree (Abies alba) by steam distillation.
		Composition: Acetic acid, valerianic acid, alfa-pinene, camphene, beta-pinene, myrcene, limonene, p-cymene, cinneol, gama-terpinene, camphor, borneol, alfa-terpineol, bornyl acetate, terpinyl acetate, sesquiterpene hydrocarbons, cariophylene, etc. Amorpha Oil Obtained from the dry fruit of wild amorpha (Amorpha fruticosa L.) by steam distillation.
	www.tradezone.com /tradesites/kalina.html (1764 words)

	EPA/OPPT/High Production Volume (HPV) Challenge Program: Robust Summaries & Test Plans: Monoterpene Hydrocarbons; ... (Site not responding. Last check: 2007-10-16)
		The five single chemical substances (both limonenes, terpinolene, myrcene and dihydromyrcene) in the category are monoterpene hydrocarbons, are structurally similar, have similar molecular weights and functional groups, and are expected to have similar physicochemical, environmental, and toxicological properties.
		The submitter also states that it is appropriate to evaluate the monoterpene hydrocarbon substances and their structural analogs in the same chemical category.
		The data are adequate for the reproductive toxicity study done in male and female rats on myrcene.
	www.epa.gov /chemrtk/monoterp/c13756ct.htm (2788 words)

	myrcène présentation (Site not responding. Last check: 2007-10-16)
		Most of industrial syntheses of ionones and methyl ionones use the acid cyclisation of pseudo ionones and pseudo methyl ionones respectively; this reaction is a key step in the obtention of various retinoids and carotenoids.
		The methodology that we used is based on the alkylation of geranyl chloride, an industrial intermediate obtained from myrcene, with a C
		Acid cyclisations of pseudo-ionones and pseudo-methyl ionones obtained according to this synthetic scheme, afford ionones and methyl ionones respectively.
	www.u-bordeaux1.fr /lcsv/Terpen/myrcene.html (108 words)

	Questions dealing with electrophilic addition reactions
		Myrcene, A, a fragrant component found in bayberry wax, has the formula C
		On catalytic hydrogenation, myrcene is converted to 2,6-dimethyloctane, B, a compound of formula C
		At the beginning of the biogenesis of squalene isopentenyl pyrophosphate, CH is enzymatically isomerized to dimethylallyl pyrophosphate, (CH These two compounds then react together to yield geranyl pyrophosphate, (CH Assuming that the weakly basic pyrophosphate anion is, like the protonated hydroxyl group, a good leaving group, R-OPP ® R
	www.ualberta.ca /~eblackbu/chem161/addition.html (239 words)

	The Communications (Site not responding. Last check: 2007-10-16)
		Vitamins K and ubiquinones are quinoid compounds and therefore accessible to Diels-Alder reactions with suitable dienes like myrcene.
		Vitamin K3, a synthetic member of the vitamin K family, reacts with myrcene much faster than vitamin K1.
		One should be aware of food components including environmental contaminants submitted to high pressure and higher temperatures.
	www.esb.ucp.pt /copernicus/communications/abs33.html (200 words)

	Terpenes (Site not responding. Last check: 2007-10-16)
		Terpenes are formed by stringing together the tail of one isoprene unit to the head of another.
		Let us take the example of Myrcene, an active ingriedient in the essential oil isolated from bay and verbena.
		The diagram below shows the structure of myrcene and also show how two isoprene units are connected in a head to tail fashion to obtain the structure of myrcene.
	www.wiu.edu /users/mftkv/Chemistry102/Terpenes.htm (225 words)

	Comparison of a -pinene and myrcene on attraction of mountain pine beetle, Dendroctonus ... (Site not responding. Last check: 2007-10-16)
		-pinene and myrcene on attraction of mountain pine beetle, Dendroctonus ponderosae (Coleoptera: Scolytidae) to pheromones in stands of western white pine
		Multiple-funnel traps baited with exo-brevicomin and a mixture of cis- and trans-verbenol were used to test the relative attractiveness of myrcene and (-)-
		Our results support the use of myrcene in commercial trap lures and tree baits for D.
	www.srs.fs.usda.gov /pubs/2243 (298 words)

	Dose-Dependent and Species-Specific Responses of Pine Bark Beetles (Coeoptera: Scolytidae) to Monoterpenes in ... (Site not responding. Last check: 2007-10-16)
		Catches of Dendroctonus ponderosae Hopkins in traps baited with exo-brevicomin and cis- and trans-verbenol were directly related to the release rates of 3-carene, myrcene, and pphellandrene.
		latidens in traps baited with its pheromone, ipsenol, were inversely proportional to the release rates of 3-carene, myrcene, and terpinolene.
		pini in traps baited with its pheromone, ipsdienol, were inversely proportional to the release rates of myrcene and terpinolene.
	www.srs.fs.usda.gov /pubs/viewpub.jsp?index=2224 (394 words)

	Myrcene - toxicity, ecologicial toxicity and regulatory information
		Myrcene - toxicity, ecologicial toxicity and regulatory information
		Myrcene - Identification, toxicity, use, water pollution potential, ecological toxicity and regulatory information
		There may be other diseases and chemicals that have similar symptoms.
	www.pesticideinfo.org /Detail_Chemical.jsp?Rec_Id=PC121 (659 words)

	Essential Oil Dictionary, Detailed Reference Guide, Herbal Encyclopedia
		Alcohol should be avoided after use as the combination induce a narcotic effect which exaggerates drunkenness.
		Up to 75% linalyl acetate, linlol, pinene, myrcene and phellandrene.
		The constituents vary according to the geographical origin so there are several different chemotypes.
	www.deancoleman.com /essentialref.htm (12287 words)

	USDA Named Hop Variety Descriptions
		Humulene 26.6% Caryophyllene 9.1%; myrcene 43.4%; farnesene 4.3%.
		Myrcene 27 - 40%; H/C ratio = 2.96
		Myrcene 55.2%; humulene 9.2%; caryophyllene 4.1%; farnesene trace
	www.freshops.com /usda_hop_desc2.html (9234 words)

	Ginger Constituents
		Analgesic (Anesthetic): 1,8-cineole ; 6-gingerol ; 6-shogaol ; benzaldehyde; borneol ; caffeic-acid ; camphor ; capsaicin (?); chlorogenic-acid ;eugenol ; ferulic-acid ; gingerol ; myrcene ; p-cymene ; quercetin ; shogaol
		1,8-cineole; 6-gingerol ; 6-shogaol ; borneol ; caffeic-acid ;camphor ; capsaicin ; chlorogenic-acid ; eugenol ; ferulic-acid ; gingerol ;myrcene ; p-cymene ; quercetin ; shogaol
		Analgesic (Anesthetic): 1,8-cineole ; 6-gingerol ; 6-shogaol ; benzaldehyde; borneol ; caffeic-acid ; camphor ; capsaicin (?); chlorogenic-acid ; eugenol ; ferulic-acid ; gingerol ; myrcene ; p-cymene ; quercetin ; shogaol
	www.riverhillwellness.com /ginger.htm (849 words)

	[No title] (Site not responding. Last check: 2007-10-16)
		(1(2 (3(4(5When Myrcene is treated with hydrogen and a palladium catalyst a new compound, 2,6-dimethyloctane is produced.
		(1(2 (3(4(5Ozonolysis of Myrcene followed by treatment with Zn/HOAc yields 2 moles of formaldehyde (HCHO), 1 mole of 2-propanone and a third compound with the formula C5H6O3.
		Choose the correct structure for this third compound.
	www.sinc.sunysb.edu /Class/che321ff/exams/FinalF02.doc (1763 words)

	Pfam 18.0 : Terpene_synth_C (Site not responding. Last check: 2007-10-16)
		tpsc includes kaurene synthase A, tpsd includes taxadiene synthase, Q41594, pinene synthase, O24475 and myrcene synthase, O24474.
		Tpsd includes taxadiene synthase, SWISSPROT:Q41594, pinene synthase, SWISSPROT:O24475 and myrcene synthase, SWISSPROT:O24474.
		cDNA isolation, characterization, and functional expression of myrcene synthase, (-)-(4S)-limonene synthase, and (-)-(1S,5S)-pinene synthase.
	pfam.wustl.edu /cgi-bin/getdesc?name=Terpene_synth_C (218 words)

	[No title]
		Tettnang type triploid with medium alpha and good aroma.
		Similar to German Spalt but with higher myrcene content.
		Similar to German Tettnang but with higher alpha and myrcene contents.
	oz.craftbrewer.org /Library/Methods/HopCo/Origin.shtml (681 words)

	Associative learning of plant odorants activating the same or different receptor neurones in the moth Heliothis ...
		No difference in salience was found between these two odorants.
		Key words: olfactory learning, linalool, ocimene, myrcene, proboscis extension response, differential conditioning, primary odorant, recordings
		to an asymmetry between linalool and myrcene, although we corrected
	jeb.biologists.org /cgi/content/full/208/4/787 (6404 words)

	Myrcene for Sunnybank Brisbane Queensland Australia
		Earth/ Australia/ Queensland/ Brisbane/ Sunnybank/ Features/ Flora/ Gases/ Myrcene/
		Unofficial and independent local neighbourhood directory or portal to locate myrcene links and myrcene (also known as CAS # 123-35-3, 7-Methyl-3-methylene-1,6-octadiene, 7-Methyl-3-methylene-7-octene-1-yl-propionate, decatriene) information for the suburban community of Sunnybank, Brisbane, Queensland, Australia.
		Chemical constituents of the fruit essential oil of Diospyros malabarica (Desr.), Kostel (Ebenaceae)
	uqconnect.net /~zzrawill/sunnybank/features/flora/gases/myrcene (55 words)

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