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Topic: Propionic acid

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Acid

Formic acid

Malic acid

Pyruvic acid

Inosinic Acid

Pyrophosphoric acid

Lactic acid

Nitric acid

Oxalic acid

Acetic acid

Valeric acid

Butyric acid

Hydrobromic acid

Sorbic acid

Pectic acid

	272. Propionic acid and its calcium, potassium and sodium salts (WHO Food Additives Series 5) (Site not responding. Last check: 2007-10-13)
		Propionic acid is not a component of the edible fats and oils, but arises in the intermediary metabolism of the body as the terminal three-carbon fragment in form of propionyl coenzyme A in the oxidation of odd-number carbon fatty acids.
		Propionates are metabolized and utilized in the same way as normal fatty acids and even after large doses no significant amounts of propionic are excreted in the urine (Bässler, 1957).
		Others convert propionic acid to B-alanine or directly to CO The inhibiting effect for microbials is probably related to competition with acetate in the acetokinase systems, to blockage of pyruvate conversion to acetyl-coenzyme A and to interference with B-alanine in pantothenic acid syntheses (Bässler, 1959).
	www.inchem.org /documents/jecfa/jecmono/v05je16.htm (2402 words)

	Preventing Mouldy Hay Using Propionic Acid
		Propionic acid is an organic acid that acts as a fungicide, inhibiting the growth of aerobic micro-organisms that can cause heating and moulding.
		Propionic and acetic acids are organic acids that are produced by microbes in the rumen (and the cecum and colin of horses) and then used by the animal as part of the digestion process.
		Propionic acid is very effective with higher density bales, such as large squares, that need to be drier at baling to avoid mould growth.
	www.omafra.gov.on.ca /english/crops/facts/preventing.htm (1553 words)

	BASF - Specialty Intermediates
		Propionic acid is used as a mold inhibitor for animal feed, wet corn, silage and grain.
		Propionic acid is used as a raw material for plant protection agents.
		Propionic acid is used as an intermediate in the production of pharmaceuticals, plastics, plasticizers, textile and rubber auxiliaries, dye intermediates, perfumery synthetics and flavorants and cosmetics.
	www.basf.com /specialtyintermediates/propionic_acid.html (201 words)

	- [www.rhodium.ws]
		The propionic acid can be purified by precipitating it as its sodium salt, placing it in a distillation flask and liberate it by the slow addition of sulfuric acid.
		Propionic acid was obtained in 82.5% yield and acetic acid in 10.8% yield.
		The formation of propionic acid by the action of hydriodic acid on lactic acid, orignally observed by Lauteman, has been confirmed by the author, who finds, moreover that this reaction affords a convenient mehtod for the preparation of propinoic acid.
	www.erowid.org /archive/rhodium/chemistry/propionic.acid.html (721 words)

	Propionic acid - Wikipedia, the free encyclopedia
		Propionic acid has physical properties intermediate between those of the smaller carboxylic acids, formic and acetic acid, and the larger fatty acids.
		Propionic acid is produced biologically from the metabolic breakdown of fatty acids containing odd numbers of carbon atoms, and also it the breakdown of some amino acids.
		The esters of propionic acid are sometimes used as solvents or artificial flavorings.
	en.wikipedia.org /wiki/Propionic_acid (750 words)

	Process for the preparation of optically active 2-(4-methoxyphenoxy) propionic acid - Patent 4760172
		A process according to claim 5 wherein the free acid is subsequently esterified to produce an alkyl or alkoxyalkyl ester of from 1 to 8 carbon atoms.
		For example, optically active 2-substituted propionic acids are conveniently prepared by the reaction of either an optically active 2-halopropionic acid or an optically active alkyl or aryl sulfonate of lactic acid with an appropriate nucleophile.
		Generally, the one molar equivalent of base necessary to achieve saponification or neutralization of the propionate in addition to the one molar equivalent required to ionize all of the methoxyphenol present or a 5 to 30 percent excess of the total amount is desirable.
	www.freepatentsonline.com /4760172.html (1980 words)

	WCM-Crops
		EPA is requiring manufacturers of propionic acid to label their product as a pesticide when it is being used for pesticidal purposes.
		If propionic acid is used for pesticidal purposes (e.g., application to hay during baling, application to silage or grain during harvest or filling, etc.), then manufacturers and labelers must register their product with EPA (and the manufacturer must have an establishment number).
		Propionic acid labeled only for feed uses (such as in TMRs) are not affected; such applications are not considered to have pesticidal activity (it's applied more for feed palatability).
	ipcm.wisc.edu /wcm/pdfs/2002/02-2Crops1.html (744 words)

	eMedicine - Metabolic Disease & Stroke: Propionic Acidemia : Article by Pitchaiah Mandava, MD, PhD (Site not responding. Last check: 2007-10-13)
		Hamilton et al suggested that metabolites of the dysfunctional propionic acid and methylmalonic acid pathways may be selectively toxic to the endothelial cells in the basal ganglia.
		In patients in whom propionic acidemia was previously diagnosed, the acute onset of movement disorders caused by an infarction of the basal ganglia may be a presenting feature.
		Propionic acidemia is an inherited disease (autosomal recessive).
	www.emedicine.com /NEURO/topic577.htm (2296 words)

	Acetic acid - Wikipedia, the free encyclopedia
		Acetic acid is corrosive, and its vapour is irritating to eyes and nose, although it is a weak acid based on its ability to dissociate in aqueous solutions.
		The acetic acid was isolated from this by treatment with milk of lime, and the resultant calcium acetate was then acidified with sulfuric acid to recover acetic acid.
		Equivalently, acetic acid is used as a spray-on preservative for livestock silage, to discourage bacterial and fungal growth.
	en.wikipedia.org /wiki/Acetic_acid (3596 words)

	Effect of Carbon Sources on Propionic Acid Fermentation by Propionibacterium Acidipropionici (Site not responding. Last check: 2007-10-13)
		Propionic acid and its salts are widely used as preservatives in foods and animal feeds due to its antimicrobial activity.
		The high demand of propionic acid for use as a natural preservative in foods and grains has stimulated developments of new fermentation processes to achieve improved propionic acid production from low-cost biomass and food processing wastes such as cheese whey, corn steep liquor and corn fiber.
		The goal of this work was to elucidate metabolic patterns in propionic acid fermentation and a quantitative understanding of flux distributions among various metabolic pathways influenced by different carbon sources, which are useful in investigating and controlling a complex metabolism.
	aiche.confex.com /aiche/2005/techprogram/P14371.HTM (438 words)

	Propionic Acidemia (PA)
		Propionic Acidemia (PA) is characterized by the accumulation of propionic acid due to a deficiency in Propionyl CoA Carboxylase, a biotin dependent enzyme involved in amino acid catabolism.
		Urine organic acid analysis of a patient with PA will demonstrate massive elevations of propionic acid and related compounds such as methylcitrate, propionylglycine, β-hydroxypropionate, and tiglic acid.
		Fenton, W.A., Gravel, R.A. and Rosenblatt, D.S. Disorders of Propionate and Methylmalonate Metabolism.
	www.pediatrix.com /body_screening_menu.cfm?id=1573 (597 words)

	Hay Preservatives
		Use of concentrated propionic acid has declined primarily because of it is corrosive and volatile.
		Research shows that use of buffered propionic acid was as effective as unbuffered acid in preserving the quality of moist alfalfa hay (about 30% DM).
		Uniform distribution of propionic acid is important since "pocketing" of molds has been observed (only parts of the bale being moldy).
	ag.udel.edu /anfs/faculty/kung/articles/hay_preservatives.htm (1087 words)

	Propionic Acidemia - DrGreene.com - caring for the next generation
		Propionic acidemia is what we call an inborn error of metabolism.
		This is known to damage the lining of small blood vessels, allowing the propionic acid to leak into the brain and nerve tissues, where it alters behavior and development.
		Close monitoring of blood pH, amino acids, urinary content of propionate and its metabolites, and growth curves is necessary to adjust the proper balance of the diet and ensure the success of therapy.
	www.drgreene.com /21_899.html (721 words)

	Expanded Newborn Screening Using Tandem Mass Spectromety
		Organic acid disorders are inherited in an autosomal recessive manner and affect both males and females.
		When this enzyme is not working, substances called glycine and propionic acid, along with other harmful substances, build up in the blood and cause problems.
		The four amino acids that cannot be used correctly are isoleucine, valine, methionine, and threonine.
	www.newbornscreening.info /Parents/organicaciddisorders/PA.html (2380 words)

	Effect of oral antibiotics on intestinal production of propionic acid -- Mellon et al. 82 (2): 169 -- Archives of ...
		Propionic acidaemia is a life threatening inborn error of propionate metabolism, which usually presents in the neonatal period
		Propionic acid was extracted with ethanol from the plasma samples using the method
		for the propionate assay in plasma (n = 6) was 8.3%.
	adc.bmjjournals.com /cgi/content/full/82/2/169 (2183 words)

	Lactational Effect of Propionic Acid and Duodenal Glucose in Cows -- Rigout et al. 86 (1): 243 -- Journal of Dairy ...
		Effect of the nature of energy source (propionic acid, glucose or starch) on milk yield and composition in dairy cows [French].
		Propionate for fatty acid synthesis by the mammary gland of the lactating goat.
		Effects of the ratio of ruminal propionate to butyrate on milk yield and blood metabolites in dairy cows.
	jds.fass.org /cgi/content/full/86/1/243 (4292 words)

	Propionic Acidemia - DrGreene.com
		Propionic acidemia can be a devastating condition, but with careful treatment it is sometimes possible for people with the disease not only to reach adulthood successfully but even to get pregnant and deliver healthy babies!
		But for parents whose children have propionic acidemia, the first weeks after the symptoms appear seem like a surreal nightmare.
		Although infants with true propionic acidemia are rarely responsive to biotin, this compound should be administered to infants during the initial attack.
	www.drgreene.com /21_690.html (1890 words)

	The methylcitric acid pathway in Ralstonia eutropha: new genes identified involved in propionate metabolism -- ...
		The methylcitric acid pathway in Ralstonia eutropha: new genes identified involved in propionate metabolism -- Brämer and Steinbüchel 147 (8): 2203 -- Microbiology
		Propionyl Coenzyme A Is a Common Intermediate in the 1,2-Propanediol and Propionate Catabolic Pathways Needed for Expression of the prpBCDE Operon during Growth of Salmonella enterica on 1,2-Propanediol
		Oxidation of propionate to pyruvate in Escherichia coli: Involvement of methylcitrate dehydratase and aconitase
	mic.sgmjournals.org /cgi/content/abstract/147/8/2203 (656 words)

	Title of Invention: Preparation of 2-(4-hydroxyphen oxy)propionic acid by fermentation
		A process for the oxidation of 2-phenoxypropionic acid to 2-(4-hydrophenoxy)propionic acid using microorganisms is described.
		The present invention relates to a process for the preparation of 2-(4-hydroxyphenoxy)propionic acid by fermentation, which comprises oxidizing 2-phenoxypropionic acid or salts thereof under aerobic conditions in the presence of a microorganism.
		The acid can be added to the nutrient medium all at once at the start, after growth has taken place or in several portions or continuously during the cultivation.
	www.nal.usda.gov /bic/Biotech_Patents/1994patents/05296363.html (1893 words)

	Propionic Acidemia Foundation Amino Acids
		It can be difficult to locate a source for the amino acids and may require a compounding pharmacy or hospital pharmacy.
		Urinary excretion of l-carnitine and acylcarnitines by patients with disorders of organic acid metabolism: evidence for secondary insufficiency of l-carnitine
		Propionylcarnitine excretion in propionic and methylmalonic acidurias: a cause of carnitine deficiency.
	pafoundation.com /PropionicAcidemiaFoundationAminoAcids_000.htm (153 words)

	propionic - OneLook Dictionary Search
		) Pertaining to, derived from, or designating, an organic acid which is produced in the distillation of wood, in the fermentation of various organic substances, as glycerin, calcium lactate, etc., and is obtained as a colorless liquid having a sharp, pungent odor.
		Propionic acid is so called because it is the first or lowest member of the fatty acid series whose salts have a fatty feel.
		Phrases that include propionic: propionic acid, propionic acidemia, propionic acid chemdata supplement
	www.onelook.com /?w=propionic (187 words)

	PROPIONIC ACID
		Synonyms: Methylacetic acid; ethylformic acid; propanoic Acid; carboxyethane
		Inside storage should be in a standard flammable liquids storage room or cabinet.
		When released into the soil, this material is expected to readily biodegrade.
	www.jtbaker.com /msds/englishhtml/p6643.htm (1167 words)

	Propionic acid - toxicity, ecologicial toxicity and regulatory information
		Propionic acid - toxicity, ecologicial toxicity and regulatory information
		Propionic acid - Identification, toxicity, use, water pollution potential, ecological toxicity and regulatory information
		Sorry, no water quality standards or criteria have been established for this chemical by the U.S. or Canadian governments; however, there may be criteria established for related chemicals.
	www.pesticideinfo.org /Detail_Chemical.jsp?Rec_Id=PC32857 (800 words)

	Medical Dictionary: Isobutylphenyl propionic acid - WrongDiagnosis.com
		Isobutylphenyl propionic acid: a nonsteroidal anti-inflammatory medicine (trade names Advil and Motrin and Nuprin) used to relieve the pain of arthritis and as an analgesic and antipyretic
		Terms that may be interchangeable with Isobutylphenyl propionic acid:
		The following list attempts to classify Isobutylphenyl propionic acid into categories where each line is subset of the next.
	www.wrongdiagnosis.com /medical/isobutylphenyl_propionic_acid.htm (202 words)

	NOAA Fisheries--Propionic Acid Fermentation for Hydrolyzed Gurry
		Development of the Propionic Acid Fermentation for the Preservation of Hydrolyzed Gurry
		Although results are based on the observations of a limited number of bacterial cultures representing various taxa, they suggest a relationship between strong fermentative metabolism and resistance to propionic acid.
		Even with a 50% inoculum for establishing a rapid propionic acid fermentation of hydrolyzed cod gurry, fermentation was slow, indicating that not only is growth of the organisms slow, but that most of the propionic acid is produced after growth ceases.
	www.nmfs.noaa.gov /mb/sk/saltonstallken/gurry.htm (106 words)

	Reagents - Propionic Acid, Mold Inhibitor
		Propionic Acid, Mold Inhibitor, Practical, 100mL - Single Unit
		The remainder is for the Air Shipper packaging that is required for handling the material.
		Propionic Acid, Mold Inhibitor, Practical, 500mL - Single Unit
	www.chemassociates.com /shopsite/Chemassoc2/PAS-propionicacid.html (284 words)

	Propionic acid Registration
		Propionic acid - Registration, import consent and bans
		Note: See Working with the Information on this Page section below for important notes about this data.
		For detailed chemical information see the chemical detail page.
	www.pesticideinfo.org /Detail_ChemReg.jsp?Rec_Id=PC32857 (372 words)

	[No title]
		Convenient way to utilize BF as a Lewis Acid
		Ease of handling BF in form of a liquid
		BF Propionic Acid Complex finds application in the following industries:
	www.specialtychem.com /bf3/propionic.htm (55 words)

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