Botanical species · safety record

Quercus robur

The EFSA Compendium of Botanicals holds 11 constituent measurements for Quercus robur. This page reports what those source records contain and how to reach them. It carries no effect estimate, no dose and no recommendation.

Accepted name in source: Quercus robur L.

11Constituent measurements

0Safety records

4Cited sources

57Licensed products (Canada)

Regulatory presence

Health Canada's Licensed Natural Health Products Database holds 57 licensed products naming Quercus robur as a medicinal ingredient, matched on the exact Latin binomial. A licence records that a product met the regulator's requirements for sale in Canada. It is not evidence that the product works.

Extract types on licence

Dry
Fresh

Source material stated

Aged bark
Bark
Bark of young twigs
Buds
Catkin
Catkins
Cortex
Dried bark of young twigs

What the records describe

Constituents measured

Plant parts

Preparations

Recorded constituents

What analytical work has found in this species, at which plant part and preparation. A measured constituent is a fact about material, not about effect.

Substance	Plant part	Preparation	Concentration	Analytical method	Source
4-hydroxy-3,5-dimethoxycinnamaldehyde	Trunk	Solvent extraction	3.94 Microgram/gram	HPLC-DAD	Resolve DOI
Ellagitannins (hydrolysable tannins)	Trunk	Solvent extraction	—	HPLC with standard detection methods	Resolve DOI
Ellagitannins (hydrolysable tannins)	Trunk	Solvent extraction	—	HPLC with standard detection methods	Resolve DOI
Esculetin	Trunk	Solvent extraction	1.83 Microgram/gram	HPLC-DAD	Resolve DOI
Gallic acid	Trunk	Solvent extraction	—	HPLC with standard detection methods	Resolve DOI
Gallic acid	Trunk	Solvent extraction	100 Microgram/gram	HPLC-DAD	Resolve DOI
Scopoletin	Trunk	Solvent extraction	2.27 Microgram/gram	HPLC-DAD	Resolve DOI
Gallic acid	Seed	Solvent extraction	—	Colorimetry, Spectroscopy (Spectrometry) and Photometry	No resolvable identifier
Gallotannins	Seed	Solvent extraction	—	Colorimetry, Spectroscopy (Spectrometry) and Photometry	No resolvable identifier
Proanthocyanidins (condensed tannins)	Bark	Solvent extraction	—	Nuclear Magnetic Resonance (NMR)	No resolvable identifier
Proanthocyanidins (condensed tannins)	Bark	Solvent extraction	—	Nuclear Magnetic Resonance (NMR)	No resolvable identifier

Cited sources

The literature the compendium cites for this species. Metatron Health has no relationship with these authors or journals and earns nothing from citing them.

Farag, Salwa F., El-Emary, Nasr A., Niwa, Masatake. Gallotannins from Quercus robur cultivated in Egypt. Bulletin of pharmaceutical sciences, assiut university, 1998, p. 1-6.
Fernandez De Simon, Brigida., Cadahia, Estrella., Conde, Elvira., Garcia-Vallejo, Maria Concepcion. Low molecular weight phenolic compounds in Spanish oak woods. Journal of agricultural and food chemistry, 1996, vol. 44, no. 6, p. 1507-1511. DOI
Kuliev, Z.A., Vdovin, A.D., Abdullaev, N.D., Makhmatkulov, A.B., Malikov, V.M. Study of the catechins and proanthocyanidins of Quercus robur. Chemistry of natural compounds, 1997, vol. 33, no. 6, p. 642-652.
Mammela, P., Savolainen, H., Lindroos, L., Kangas, J., Vartiainen, T. Analysis of oak tannins by liquid chromatography-electrospray ionisation mass spectrometry . Journal of chromatography a, 2000, vol. 891, no. 1, p. 75-83. DOI

Boundary

A constituent measurement is a fact about material at a stated preparation, not a statement about what that material does in a person. An adverse-effect or genotoxicity record is an observation reported in a source, most often in an animal or laboratory model. Neither is a Metatron Health conclusion about causality, human risk or benefit, and the absence of a record is not proof that a preparation is safe. Nothing here is diagnosis, prescribing or individual medical care.

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Independent literature