Proanthocyanidin A2

Proanthocyanidin A2
Other names Dimeric catechin Procyanidin A2 Procyanidol A2 Proanthocyanidin A-2 Procyanidin dimer A2 (+)-Proanthocyanidin A2 Epicatechin-(2β→7,4β→8)-epicatechin
Identifiers
PubChem	124025
Jmol-3D images	Image 1
SMILES C1C(C(OC2=C3C4C(C(OC5=CC(=CC(=C45)O)O)(OC3=CC(=C21)O)C6=CC(=C(C=C6)O)O)O)C7=CC(=C(C=C7)O)O)O
Properties
Molecular formula	C30H24O12
Molar mass	576.50 g/mol
Exact mass	576.126776 u
Y A2 (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Proanthocyanidin A2 is a A type proanthocyanidin.

It can be found in horse chestnut (Aesculus hippocastanum).,^[1] in cranberry juice concentrate,^[2] in peanut^[2] skins^[3] in Cinchona Cinchona and Cinchona pubescens rind, bark and cortex, in Cinnamomum verum (Ceylon cinnamon) rind, bark and cortex, in the fruit of Persea americana (avocado or alligator pear),^[4] in Urvillea ulmaceae,^[5] and in Ecdysanthera utilis.^[6]

Health benefits

Proanthocyanidin A2 shows free radical scavenging activity.^[5]

References

1. ^ Facino, R. Maffei; Carini, M.; Brambilla, A.; Bombardelli, E.; Morazzoni, P. (1996). "Proanthocyanidin-A2: a new polyphenol". Cosmetics & Toiletries. 
2. ^ ^{a b} Determination of Proanthocyanidin A2 Content in Phenolic Polymer Isolates by Reversed-Phase High Performance Liquid Chromatography. Koerner Jayma, Hsu Victor, Lee Jungmin, Kennedy, James, 2008
3. ^ A-type proanthocyanidins from peanut skins. Hongxiang Lou; Yamazaku Y.; Sasaku T.; Uchida M.; Tanaka H.; Oka S., 1999
4. ^ Proanthocyanidin-A-2 on liberherbarum.com
5. ^ ^{a b} Free radical scavenging activity and chemical constituents of Urvillea ulmaceae. Suziane A. Dias, Flávia P. Cardoso, Silvana M. O. Santin, Willian F. da Costa, Gentil J. Vidotti, Maria Conceição de Souza and Maria Helena Sarragiotto, Pharmaceutical biology, 2009, doi:10.1080/13880200902933336
6. ^ Immunomodulatory Proanthocyanidins from Ecdysanthera utilis. Lie-Chwen Lin, Yuh-Chi Kuo, and Cheng-Jen Chou, 2002

This article about a natural phenol is a stub. You can help Wikipedia by expanding it.v · Categories: Proanthocyanidins Natural phenol stubs Wikimedia Foundation. 2010. Игры ⚽ Нужно решить контрольную? Pinoresinol 5-Deoxyinositol Look at other dictionaries: Proanthocyanidin — Epicatechin (EC), one of the building blocks of proanthocyanidins Proanthocyanidins, also known as OPCs (oligomeric proanthocyanidins) or condensed tannins, are a subgroup of the flavonoid class of polyphenols. Essentially, they are oligomer… …   Wikipedia proanthocyanidin — noun An antioxidant flavonoid with possible health benefits, found in many plant sources, including apples, bilberry, grapeseed, pine bark, and black chokeberry. Syn: procyanidin oligomeric proanthocyanidin, OPC, pycnogenol, leukocyanidin,… …   Wiktionary Oligomere Proanthocyanidin — Oligomere Proanthocyanidine, auch oligomere Procyanidine genannt und abgekürzt als OPC oder PCO (englisch: oligomeric proanthocyanidins), sind in Pflanzen natürlich auftretende Stoffe, die zur Gruppe der Flavonoide gehören und den übergeordneten… …   Deutsch Wikipedia Cinnamtannin B1 — Identifiers Jmol 3D images …   Wikipedia Tanin condensé — Les tanins condensés sont des polymères de flavanols. Ils sont constitués d unités de flavan 3 ols liées entre elles par des liaisons carbone carbone de type 4→8 ou 4→6 (voir la structure ci dessous). Ces tanins sont très abondants dans certains… …   Wikipédia en Français Grape seed extract — Grape seed extracts are industrial derivatives from whole grape seeds. Typically, the commercial opportunity of extracting grape seed constituents has been for chemicals known as polyphenols, including oligomeric proanthocyanidins recognized as… …   Wikipedia Afzelechin — IUPAC name (2R,3R) 2 (4 hydroxyphenyl) 3,4 dihydro 2H chromene 3,5,7 triol …   Wikipedia Dictionary of natural phenols and polyphenols molecular formulas — Natural polyphenols molecular formulas are generally formed from C, H and O. The entries are sorted by mass. Formula Example Exact mass (u) C8H10O 4 Ethylphenol, others 122.073164 C6H6O3 Hydroxyquinol, others 126.031694 C7H6O3 2 Hydroxybenzoic… …   Wikipedia Grape — This article is about the fruits of the genus Vitis. For the European grapevine, see Vitis vinifera. For other uses, see Grape (disambiguation). White table grapes Grapes, purple or green …   Wikipedia A1 — For the Wikipedia A1 criteria for speedy deletion, see Wikipedia:Criteria for speedy deletion#a1. A1 may refer to: Contents 1 Technology 1.1 Products …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”