Theaflavin

Structural formula
General
Surname	Theaflavin
other names	3,4,5-Trihydroxy-1,8-bis [(2 R , 3 R ) -3,5,7-trihydroxy-2-chromanyl] -6-benzo [7] annulenone; 3,4,6-trihydroxy-1,8-bis (3 α , 5,7-trihydroxy-2 α -chromanyl) -5 H -benzocyclohepten-5-one;
Molecular formula	C 29 H 24 O 12
Brief description	red solid
External identifiers / databases
PubChem	114777
ChemSpider	102754
Wikidata	Q415677
properties
Molar mass	564.49 g mol −1
Physical state	firmly
Melting point	237-240 ° C
solubility	poorly soluble in hexane
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
Toxicological data	562 mg kg −1 ( LD 50 , mouse , ip )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Theaflavin is a chemical compound from the group of polyphenols . It forms the basic structure of the theaflavins .

Occurrence

Theaflavin occurs naturally in black tea ( Camellia sinensis ) and is responsible for its color and taste. Its synthesis takes place through the enzymatic oxidation of epicatechin via quinones.

properties

Theaflavin is a red crystalline solid.

literature

R. Aneja, K. Odoms, AG Denenberg, HR Wong: Theaflavin, a black tea extract, is a novel anti-inflammatory compound. In: Critical care medicine. Volume 32, Number 10, October 2004, pp. 2097-2103, PMID 15483420 .

Individual evidence

↑ ^a ^b ^c ^d ^e ^f data sheet Theaflavin, analytical standard at Sigma-Aldrich , accessed on July 25, 2017 ( PDF ).
↑ ^a ^b ^c Shmuel Yannai: Dictionary of Food Compounds with CD-ROM, Second Edition . CRC Press, 2012, ISBN 978-1-4200-8351-4 , pp. 1875 ( limited preview in Google Book Search).
↑ Burkhard Fugmann, Susanne Lang-Fugmann, Wolfgang Steglich: RÖMPP Encyclopedia Natural Products, 1st Edition, 2000 . Georg Thieme Verlag, 2014, ISBN 3-13-179311-2 , p. 645 ( limited preview in Google Book Search).

[Sigma-1] ↑ ^a ^b ^c ^d ^e ^f data sheet Theaflavin, analytical standard at Sigma-Aldrich , accessed on July 25, 2017 ( PDF ).

[Shmuel_Yannai-2] Shmuel Yannai: Dictionary of Food Compounds with CD-ROM, Second Edition . CRC Press, 2012, ISBN 978-1-4200-8351-4 , pp. 1875 ( limited preview in Google Book Search).

[Burkhard_Fugmann,_Susanne_Lang-Fugmann,_Wolfgang_Steglich-3] Burkhard Fugmann, Susanne Lang-Fugmann, Wolfgang Steglich: RÖMPP Encyclopedia Natural Products, 1st Edition, 2000 . Georg Thieme Verlag, 2014, ISBN 3-13-179311-2 , p. 645 ( limited preview in Google Book Search).