Ellagitannin

The ellagitannins are a diverse class of hydrolyzable tannins, a type of polyphenol formed primarily from the oxidative linkage of galloyl groups in 1,2,3,4,6-Pentagalloyl glucose.[1] Ellagitannins differ from gallotannins, in that their galloyl groups are linked through C-C bonds, whereas the galloyl groups in gallotannins are linked by depside bonds.[2]

Particular ellagitannins such as casuarictin[3] have be shown to have potential antiviral activity.[4]

Contents

Examples

Presence in food

The fruits of Rubus are a concentrated sources of dietary ellagitannins.[5] The trimeric lambertianin C and the dimerics sanguiin H-6 are by far the major ellagitannins of Rubus berries. Lambertianin C is the major ellagitannin in blackberries and sanguiin H-6 the major ellagitannin in raspberries.[5] Besides these two compounds, another 20 minor related substances were detected and preliminarily characterized in Rubus extracts.[5]

See also

References

  1. ^ Sepulveda, Leonardo; Alberto Ascacio, Raul Rodriguez-Herrera, Antonio Aguilera-Carbo, and Cristobal N. Aguilar (30 May 2011). "Ellagic acid: Biological properties and biotechnological development for production processes". African Journal of Biotechnology 10 (22): 4518–4523. http://www.academicjournals.org/AJB/PDF/pdf2011/30May/Sepulveda%20et%20al.pdf. Retrieved 12 November 2011. 
  2. ^ MALDI-TOF Mass Spectrometric Analysis of Hydrolysable Tannins
  3. ^ Cheng HY, Lin CC, Lin TC (September 2002). "Antiherpes simplex virus type 2 activity of casuarinin from the bark of Terminalia arjuna Linn". Antiviral Res. 55 (3): 447–55. doi:10.1016/S0166-3542(02)00077-3. PMID 12206882. http://linkinghub.elsevier.com/retrieve/pii/S0166354202000773. 
  4. ^ Quideau S, Varadinova T, Karagiozova D, et al. (February 2004). "Main structural and stereochemical aspects of the antiherpetic activity of nonahydroxyterphenoyl-containing C-glycosidic ellagitannins". Chem. Biodivers. 1 (2): 247–58. doi:10.1002/cbdv.200490021. PMID 17191843. 
  5. ^ a b c Gasperotti M.,Masuero D.,Vrhovsek U., Guella G. and Mattivi F. (2010). "Profiling and Accurate Quantification of Rubus Ellagitannins and Ellagic Acid Conjugates Using Direct UPLC-Q-TOF HDMS and HPLC-DAD Analysis". J Agric Food Chem. 58: 4602–16. doi:10.1021/jf904543w. PMID 20353173. 

Further reading

External links

Types of ellagitannins
Aglycones
Examples
Acetonyl geraniin | Castalagin (Vescalagin) | Castalin | Casuarictin | Casuariin | Casuarinin | Cornusiin E | Elaeocarpusin | Euphorscopin | Geraniin | Grandinin | Helioscopin B, Helioscopinin A | Helioscopinin B | Jolkinin | Lambertianin C | Macranganin | Pedunculagin | Punicacortein C | Punigluconin | Punicalagin | 1-alpha-O-galloylpunicalagin | Punicalin | 2-O-galloyl-punicalin | Raspberry ellagitannin | Roburin A | Roburin B | Roburin C | Roburin D | Roburin E | Rugosin E | Sanguiin H-6 | Stachyurin | Strictinin | Supinanin | Tellimagrandin II | Teracatain | Terchebulin | Terflavin A | Terflavin B
Other