Vanillic acid

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Structural formula
Structural formula of vanillic acid
General
Surname Vanillic acid
other names

4-hydroxy-3-methoxybenzoic acid

Molecular formula C 8 H 8 O 4
Brief description

yellowish, odorless solid

External identifiers / databases
CAS number 121-34-6
EC number 204-466-8
ECHA InfoCard 100.004.061
PubChem 8468
ChemSpider 8155
DrugBank DB02130
Wikidata Q419672
properties
Molar mass 168.15 g mol −1
Physical state

firmly

Melting point

208-210 ° C

pK s value

4.53 (25 ° C)

solubility

poorly soluble in water

safety instructions
GHS labeling of hazardous substances
no GHS pictograms
H and P phrases H: no H-phrases
P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Vanillic acid ( 4-hydroxy-3-methoxybenzoic acid ) is an organic chemical compound and belongs to the group of phenolic acids . The substance is structurally derived from both benzoic acid and guaiacol ( o -methoxyphenol).

Occurrence

There are traces of vanillic acid in various types of fruit such as strawberries , alcoholic beverages such as red wine and as a breakdown product of adrenaline and noradrenaline in the urine. The highest known occurrence of vanillic acid in plants is in the root of Angelica sinensis , commonly "dong quai", "dang gui" or "female ginseng" (Chinese: 当归), a Chinese herb used in traditional Chinese medicine becomes.

Extraction and presentation

Vanillin formed during lignin degradation by wood-destroying fungi or in the oxidation of vanillin .

Biochemically, vanillic acid is an intermediate in the production of vanillin from ferulic acid .

properties

Both vanillin and vanillic acid have antimicrobial properties. Vanillic acid inhibits the yeast Saccharomyces cerevisiae and the growth of Zymomonas mobilis . In vitro , vanillic acid inhibits the growth of Proteus mirabilis in urine and the kidney stones produced by the germ .

See also

Web links

Individual evidence

  1. a b c d Entry on vanillic acid in the GESTIS substance database of the IFA , accessed on December 11, 2012(JavaScript required) .
  2. ^ D'Ans-Lax, paperback for chemists and physicists , 3rd edition, volume 1, Springer-Verlag, 1967.
  3. ^ W. Ternes: Food Lexicon.
  4. A. Hohmann: Lexicon of Dental Technology.
  5. Dr. Duke's Phytochemical and Ethnobotanical Databases: Vanillic Acid , accessed February 5, 2018.
  6. Laurence Lesage-Meessen, Michel Delattre, Mireille Haon, Jean-François Thibault, Benoit Colonna Ceccaldi, Pascal Brunerie, Marcel Asther: A two-step bioconversion process for vanillin production from ferulic acid combining “Aspergillus niger” and “Pycnoporus cinnabarinus” . In: J. Biotechnol. , 1996 , 50  (2-3), pp. 107-113 ( doi : 10.1016 / 0168-1656 (96) 01552-0 ; PMID 8987621 ).
  7. Claudio Civolani, Paolo Barghini, Anna Rita Roncetti, Maurizio Ruzzi, Alma Schiesser: Bioconversion of Ferulic Acid into Vanillic Acid by Means of a Vanillate-Negative Mutant of "Pseudomonas fluorescens" Strain BF13 . In: Appl. Environ. Microbiol. , 2000 , 66  (6), pp. 2311-2317 ( doi : 10.1128 / AEM.66.6.2311-2317.2000 ; PMID 10831404 ; PMC 110519 (free full text)).
  8. Yvonne Kirsch: Antibacterial effect of selected natural substances on the growth of Listeria monocytogenes , diploma thesis, Bonn 2006 ( abstract ).
  9. Agnieszka Torzewska, Antoni Rozalski: Inhibition of crystallization Caused by Proteus mirabilis during the development of infectious urolithiasis by various phenolic substances . In: Microbiological Research , 2013 , S., ( doi : 10.1016 / j.micres.2013.09.020 ).