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Flavan-3-ol

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The flavonoids are products from a cinnamoyl-CoA starter unit, with chain extension using three molecules of malonyl-CoA. Reactions are catalyzed by a type III PKS enzyme. These enzyme do not use ACPSs, but instead employ coenzyme A esters and have a single active site to perform the necessary series
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Schematic representation of the flavan-3-ol (−)-epicatechin metabolism in humans as a function of time post-oral intake. SREM: structurally related (−)-epicatechin metabolites. 5C-RFM: 5-carbon ring fission metabolites. 3/1C-RFM: 3- and 1-carbon-side chain ring fission metabolites. The structures of
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containing 200 mg of flavanols, stating that such intake "may contribute to maintenance of vascular elasticity and normal blood flow". As of 2022, food-based evidence indicates that intake of 400–600 mg per day of flavan-3-ols could have a small positive effect on cardiovascular
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of reactions, e.g. chain extension, condensation, and cyclization. Chain extension of 4-hydroxycinnamoyl-CoA with three molecules of malonyl-CoA gives initially a polyketide (Figure 1), which can be folded. These allow Claisen-like reactions to occur, generating aromatic rings.
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was imprecisely applied to include the flavanols, which are distinguished by absence of ketone(s). Catechin monomers, dimers, and trimers (oligomers) are colorless. Higher order polymers, anthocyanidins, exhibit deepening reds and become
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Flavan-3-ol precursors of the microbial metabolite 5-(3′/4′-dihydroxyphenyl)-γ-valerolactone (gVL). Only compounds with intact (epi)catechin moiety result in the formation of γVL by the intestinal microbiome. ECG,
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Payne MJ, Hurst WJ, Miller KB, Rank C, Stuart DA (October 2010). "Impact of fermentation, drying, roasting, and Dutch processing on epicatechin and catechin content of cacao beans and cocoa ingredients".
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configuration. While monomeric flavan-3-ols are readily taken up, oligomeric forms are not absorbed. Most data for human metabolism of flavan-3-ols are available for monomeric compounds, especially
1392:"Assessing the respective contributions of dietary flavanol monomers and procyanidins in mediating cardiovascular effects in humans: randomized, controlled, double-masked intervention trial" 3301: 1559:"The metabolome of [2-C](−)-epicatechin in humans: implications for the assessment of efficacy, safety, and mechanisms of action of polyphenolic bioactives" 3232: 102:
The single-molecule (monomer) catechin, or isomer epicatechin (see diagram), adds four hydroxyls to flavan-3-ol, making building blocks for concatenated polymers (
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has also an important role in the metabolism of flavan-3-ols and they are catabolized to smaller compounds such as 5-(3′/4′-dihydroxyphenyl)-γ-valerolactones and
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Crowe-White, Kristi M; Evans, Levi W; Kuhnle, Gunter G C; Milenkovic, Dragan; Stote, Kim; Wallace, Taylor; Handu, Deepa; Senkus, Katelyn E (3 October 2022).
3269: 1796:"Dietary intakes of flavan-3-ols and cardiometabolic health: systematic review and meta-analysis of randomized trials and prospective cohort studies" 3244: 249: 3249: 808:. Only flavan-3-ols with an intact (epi)catechin moiety can be metabolized into 5-(3′/4′-dihydroxyphenyl)-γ-valerolactones (image in Gallery). 1676:"Summary Safety Review - Green tea extract-containing natural health products - Assessing the potential risk of liver injury (hepatotoxicity)" 3274: 3264: 1281: 1069: 1985: 1441:"Intestinal absorption, metabolism, and excretion of (−)-epicatechin in healthy humans assessed by using an intestinal perfusion technique" 266::Schematic overview of the flavan-3-ol (–)-epicatechin biosynthesis in plants: Enzymes are indicated in blue, abbreviated as follows: E1, 2695: 2778: 492: 3370: 2503: 1343:"Dietary (poly)phenolics in human health: structures, bioavailability, and evidence of protective effects against chronic diseases" 1013:"Dietary (poly)phenolics in human health: structures, bioavailability, and evidence of protective effects against chronic diseases" 3365: 3259: 3210: 3291: 3128: 3337: 2422: 303: 1843: 1480:
Kuhnle G, Spencer JP, Schroeter H, Shenoy B, Debnam ES, Srai SK, et al. (October 2000). "Epicatechin and catechin are
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Das NP (December 1971). "Studies on flavonoid metabolism. Absorption and metabolism of (+)-catechin in man".
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the most abundant (−)-epicatechin metabolites present in the systemic circulation and in urine are depicted.
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Ullah C, Unsicker SB, Fellenberg C, Constabel CP, Schmidt A, Gershenzon J, Hammerbacher A (December 2017).
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RodrĂ­guez Mateos A, Weber T, Skene SS, Ottaviani JI, Crozier A, Kelm M, et al. (December 2018).
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occur for each of them. They are distinguished from the yellow, ketone-containing flavonoids such as
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Structures (Epi)catechin, (epi)catechin-gallate, (epi)gallocatechin and (epi)gallocatechin-gallate.
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Mueller-Harvey I, Feucht W, Polster J, TrnkovĂĄ L, Burgos P, Parker AW, Botchway SW (March 2012).
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Actis-Goretta L, LĂŠvèques A, Rein M, Teml A, Schäfer C, Hofmann U, et al. (October 2013).
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and EFSA have advised for caution, recommending intake should not exceed 800 mg per day.
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Ottaviani JI, Fong R, Kimball J, Ensunsa JL, Britten A, Lucarelli D, et al. (June 2018).
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Younes M, Aggett P, Aguilar F, Crebelli R, Dusemund B, Filipič M, et al. (April 2018).
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Del RĂ­o D, RodrĂ­guez Mateos A, Spencer JP, Tognolini M, Borges G, Crozier A (May 2013).
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Del Rio D, Rodriguez-Mateos A, Spencer JP, Tognolini M, Borges G, Crozier A (May 2013).
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Raman G, Avendano EE, Chen S, Wang J, Matson J, Gayer B, et al. (November 2019).
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Ried K, Fakler P, Stocks NP, et al. (Cochrane Hypertension Group) (April 2017).
1532: 828: 805: 654: 531: 175: 107: 2481: 1167: 3222: 3138: 2920: 2895: 2817: 2812: 2710: 2318: 2263: 2094: 2012: 1762: 862: 854: 719: 195: 165: 1899:"Flavan-3-ols and cardiometabolic health: First ever dietary bioactive guideline" 3227: 3179: 2890: 2745: 2550: 2299: 2240: 2170: 2067: 866: 561: 419: 395: 381: 217: 202: 183: 149: 91: 1915: 1642: 94:. They play a part in plant defense and are present in the majority of plants. 2905: 2900: 2880: 2855: 2850: 2840: 2797: 2591: 2529: 2457: 2350: 2345: 2250: 2235: 2230: 2188: 2056: 1151: 840: 728:), although the content is affected considerably by processing, especially in 695: 191: 87: 1882: 1865: 1713: 1213: 1196: 748:. Their content in food is variable and affected by various factors, such as 2787: 2565: 2513: 2400: 2360: 2258: 2222: 2079: 2052: 2044: 2003: 1995: 1457: 1440: 1315: 1298: 997: 871: 817: 741: 732:. Flavan-3-ols are also present in the human diet in fruits, in particular 729: 624: 228: 224: 118: 55: 1934: 1829: 1780: 1731: 1660: 1600: 1505: 1497: 1466: 1425: 1376: 1324: 1258: 1222: 1159: 1120: 1046: 971: 1952: 1811: 1540: 1407: 1358: 1028: 3164: 2915: 2910: 2865: 2845: 2534: 2369: 2295: 2184: 2175: 2155: 2146: 2075: 2029: 1102: 781: 749: 361: 187: 145: 126: 67: 31: 953: 39: 17: 3174: 3113: 2337: 2033: 2021: 938:"Flavan-3-ols Are an Effective Chemical Defense against Rust Infection" 820: 785: 161: 1963: 1582: 1250: 156:, with (–)-epicatechin and (+)-catechin being the most common optical 2570: 2377: 2116: 2083: 157: 153: 139: 59: 1135: 160:
found in nature. Catechin was first isolated from the plant extract
1197:"Procyanidin content and variation in some commonly consumed foods" 3108: 797: 784:. These compounds are taken up and metabolized upon uptake in the 737: 699: 233: 205: 122: 38: 857:, with only minor effects demonstrated, as of 2019. In 2015, the 704:
Reported range of flavan-3-ol content in foods commonly consumed.
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Manach C, Scalbert A, Morand C, RĂŠmĂŠsy C, JimĂŠnez L (May 2004).
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Ottaviani JI, Borges G, Momma TY, et al. (July 2016).
1698:"Scientific opinion on the safety of green tea catechins" 1484:-methylated and glucuronidated in the small intestine". 252:(FLIM) can be used to detect flavanols in plant cells. 212:, which is commonly the most abundant catechin in tea. 1195:
Hammerstone JF, Lazarus SA, Schmitz HH (August 2000).
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Flavan-3-ols possess two chiral carbons, meaning four
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3’-O-methyl-(-)-epicatechin 7-O-β-D-glucopyranoside
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Biochemical and Biophysical Research Communications
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Medicinal Natural Products: a biosynthetic approach
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European Commission, EU Register. 31 March 2015 1612: 1610: 1182:"Database on polyphenol content in foods, v. 3.6" 845:Research has shown that flavan-3-ols may affect 1299:"Polyphenols: food sources and bioavailability" 2772: 2497: 1979: 841:Cocoa bean § Phytochemicals and research 696:Cocoa bean § Phytochemicals and research 190:, respectively, similar to the difference in 8: 983: 981: 1751:The Cochrane Database of Systematic Reviews 2779: 2765: 2757: 2504: 2490: 2482: 2365: 2283: 2121: 2017: 2008: 1986: 1972: 1964: 1800:The American Journal of Clinical Nutrition 1445:The American Journal of Clinical Nutrition 1396:The American Journal of Clinical Nutrition 1303:The American Journal of Clinical Nutrition 1239:Journal of Agricultural and Food Chemistry 333: 1924: 1914: 1881: 1819: 1770: 1721: 1650: 1590: 1456: 1415: 1366: 1314: 1212: 1110: 1036: 961: 227:, flavan-3-ols do not generally exist as 1272:Mabrym H, Harborne JB, Mabry TJ (1975). 250:Fluorescence-lifetime imaging microscopy 928: 881: 3250:European Cocoa and Chocolate Directive 1064:. John Wiley & Sons. p. 168. 3265:International Cocoa Quarantine Centre 1678:. Health Canada, Government of Canada 1552: 1550: 1336: 1334: 62:that possess a 2-phenyl-3,4-dihydro-2 7: 3233:CĂ´te d'Ivoire–Ghana Cocoa Initiative 2627:(Afzelechin-3-O-β-D-glucopyranoside) 3302:Production in SĂŁo TomĂŠ and PrĂ­ncipe 2656:(+)-Catechin 7-O-β-D-xylopyranoside 2621:(Afzelechin-3-O-β-D-xylopyranoside) 1747:"Effect of cocoa on blood pressure" 988:Schwitters B, Masquelier J (1995). 1674:Health Canada (12 December 2017). 1347:Antioxidants & Redox Signaling 1017:Antioxidants & Redox Signaling 25: 43:Chemical structure of flavan-3-ol 3400: 3387: 3386: 3260:International Cocoa Organization 3211:Child labour in cocoa production 2686:(+)-catechin 7-O-Îą-L-arabinoside 2602:4′-O-methyl-(−)-epigallocatechin 1951: 897: 884: 647: 617: 584: 554: 524: 491: 460: 426: 388: 354: 208:of the catechins; an example is 3401: 772:of flavan-3-ols depends on the 302:, E10, anthocyanidin synthase ( 243:Biosynthesis of (–)-epicatechin 178:contain an additional phenolic 27:Category of polyphenol compound 2423:List of phytochemicals in food 1763:10.1002/14651858.CD008893.pub3 1085:Winkel-Shirley B (June 2001). 764:Bioavailability and metabolism 304:leucoanthocyanidin dioxygenase 1: 3275:Philippine chocolate industry 776:, type of compound and their 708:Flavan-3-ols are abundant in 220:are oligomeric flavan-3-ols. 106:) and higher order polymers ( 1533:10.1016/0006-2952(71)90449-7 1276:. London: Chapman and Hall. 503:(–)-Epigallocatechin gallate 284:naringenin-chalcone synthase 712:derived from the tea plant 300:dihydroflavanol 4-reductase 268:phenylalanine ammonia lyase 3468: 3239:The Dark Side of Chocolate 2661:Epicatechin-3′-O-glucoside 1643:10.1038/s41598-018-28333-w 838: 685: 223:In contrast to many other 58:. They are derivatives of 50:(sometimes referred to as 29: 3381: 3292:Production in Ivory Coast 2470: 1207:(8S Suppl): 2086S–2092S. 1152:10.1016/j.aca.2011.12.068 282:, E5, chalcone synthase ( 3270:Manufacturers (vertical) 2725:Epigallocatechin gallate 2585:O-methylated flavan-3ols 1916:10.1093/advances/nmac105 1883:10.2903/j.efsa.2014.3654 1714:10.2903/j.efsa.2018.5239 1521:Biochemical Pharmacology 1201:The Journal of Nutrition 1184:. Phenol Explorer. 2016. 911:Epigallocatechin gallate 812:Possible adverse effects 722:(made from the seeds of 499:Epigallocatechin gallate 292:Flavonoid 3'-hydroxylase 210:epigallocatechin gallate 133:. Early use of the term 80:epigallocatechin gallate 30:Not to be confused with 3129:Chocolate-covered foods 2641:Catechin-4'-O-glucoside 2636:Catechin-3'-O-glucoside 2512:Flavan-3-ols and their 2433:O-methylated flavonoids 2428:C-methylated flavonoids 1458:10.3945/ajcn.113.065789 398:, EC, (–)-Epicatechin ( 308:anthocyanidin reductase 296:flavonone 3-hydroxylase 280:4-coumaroyl: CoA-ligase 276:cinnamate 4-hydroxylase 3307:World Cocoa Foundation 2651:Catechin-7-O-glucoside 2646:Catechin-5-O-glucoside 2631:Catechin-3-O-glucoside 2473:Flavonoid biosynthesis 2311:3-hydroxyanthocyanidin 1498:10.1006/bbrc.2000.3701 1214:10.1093/jn/130.8.2086S 1140:Analytica Chimica Acta 705: 272:tyrosine ammonia lyase 260: 239: 201:Catechin gallates are 44: 3297:Production in Nigeria 3255:Harkin–Engel Protocol 3044:Chocolate chip cookie 2730:Gallocatechin gallate 2288:3-deoxyanthocyanidins 1903:Advances in Nutrition 1359:10.1089/ars.2012.4581 1316:10.1093/ajcn/79.5.727 1029:10.1089/ars.2012.4581 718:, as well as in some 703: 310:. HSCoA, Coenzyme A. 258: 237: 42: 3245:Environmental impact 3104:Cioccolato di Modica 2594:(3-O-methylcatechin) 1960:at Wikimedia Commons 1103:10.1104/pp.126.2.485 54:) are a subgroup of 3362:Military chocolate 3323:Chocolate addiction 3280:Production in Ghana 3069:Chocolate ice cream 2886:Tetramethylpyrazine 2666:Glochiflavanoside A 2541:Epicatechin gallate 1812:10.1093/ajcn/nqz178 1635:2018NatSR...8.9859O 1575:2016NatSR...629034O 1408:10.1093/ajcn/nqy229 1245:(19): 10518–10527. 954:10.1104/pp.17.00842 859:European Commission 692:Polyphenols in wine 468:Epicatechin gallate 336: 125:, which are called 72:epicatechin gallate 3333:Chocolate fountain 3059:Chocolate crackles 1623:Scientific Reports 1563:Scientific Reports 1060:Dewick PM (2009). 905:(−)-epicatechin-3- 706: 688:Polyphenols in tea 611:Proguibourtinidins 334: 288:chalcone isomerase 261: 240: 98:Chemical structure 45: 3419: 3418: 3343:Chocolate museums 3338:Legal definitions 3285:Ghana Cocoa Board 3201:Organic chocolate 3155:Aerated chocolate 3099:Chocolate truffle 3084:Chocolate pudding 3074:Chocolate liqueur 3034:Chocolate brownie 3029:Chocolate biscuit 2754: 2753: 2479: 2478: 2466: 2465: 2409: 2408: 2382:Isoliquiritigenin 2332: 2331: 2273: 2272: 2111: 2110: 1956:Media related to 1583:10.1038/srep29034 1527:(12): 3435–3445. 1353:(14): 1818–1892. 1283:978-0-412-11960-6 1251:10.1021/jf102391q 1071:978-0-471-49641-0 1023:(14): 1818–1892. 847:vascular function 715:Camellia sinensis 679: 678: 674:Prorobinetinidins 364:, C, (+)-Catechin 325: 321: 317: 313: 214:Proanthocyanidins 182:when compared to 104:proanthocyanidins 84:proanthocyanidins 16:(Redirected from 3459: 3409: 3404: 3403: 3395: 3390: 3389: 3206:Fair trade cocoa 3089:Chocolate spread 2933: 2808:Chocolate liquor 2800: 2790: 2781: 2774: 2767: 2758: 2546:Epigallocatechin 2506: 2499: 2492: 2483: 2448:Prenylflavonoids 2443:Pyranoflavonoids 2438:Furanoflavonoids 2366: 2284: 2212:Leucodelphinidin 2200:Flavan-3,4-diols 2122: 2103:Dalbergichromene 2018: 2009: 1988: 1981: 1974: 1965: 1955: 1939: 1938: 1928: 1918: 1894: 1888: 1887: 1885: 1862: 1856: 1855: 1853: 1851: 1840: 1834: 1833: 1823: 1806:(5): 1067–1078. 1791: 1785: 1784: 1774: 1742: 1736: 1735: 1725: 1693: 1687: 1686: 1684: 1683: 1671: 1665: 1664: 1654: 1614: 1605: 1604: 1594: 1554: 1545: 1544: 1516: 1510: 1509: 1477: 1471: 1470: 1460: 1436: 1430: 1429: 1419: 1402:(6): 1229–1237. 1387: 1381: 1380: 1370: 1338: 1329: 1328: 1318: 1294: 1288: 1287: 1269: 1263: 1262: 1233: 1227: 1226: 1216: 1192: 1186: 1185: 1178: 1172: 1171: 1131: 1125: 1124: 1114: 1091:Plant Physiology 1082: 1076: 1075: 1057: 1051: 1050: 1040: 1008: 1002: 1001: 992:(3rd ed.). 985: 976: 975: 965: 948:(4): 1560–1578. 942:Plant Physiology 933: 915:Epigallocatechin 909:-gallate; EGCG, 901: 888: 816:As catechins in 651: 621: 588: 558: 528: 495: 464: 434:Epigallocatechin 430: 392: 358: 337: 326:-phenylalanine. 323: 319: 315: 311: 172:Epigallocatechin 115:diastereoisomers 76:epigallocatechin 21: 3467: 3466: 3462: 3461: 3460: 3458: 3457: 3456: 3422: 3421: 3420: 3415: 3414: 3407: 3393: 3377: 3353:Cocoa smuggling 3328:Chocolate bloom 3311: 3189: 3143: 3094:Chocolate syrup 3064:Chocolate gravy 3054:Chocolate coins 3000: 2931: 2925: 2829: 2824:Theobroma cacao 2798: 2792: 2788: 2785: 2755: 2750: 2734: 2713: 2701: 2607: 2598:Ourateacatechin 2580: 2516: 2510: 2480: 2475: 2462: 2405: 2393:Dihydrochalcone 2387: 2355: 2328: 2305: 2269: 2245: 2217: 2194: 2173: 2165: 2144: 2136: 2107: 2089: 2062: 2039: 1998: 1992: 1948: 1943: 1942: 1896: 1895: 1891: 1864: 1863: 1859: 1849: 1847: 1842: 1841: 1837: 1793: 1792: 1788: 1757:(5): CD008893. 1744: 1743: 1739: 1695: 1694: 1690: 1681: 1679: 1673: 1672: 1668: 1616: 1615: 1608: 1556: 1555: 1548: 1518: 1517: 1513: 1479: 1478: 1474: 1438: 1437: 1433: 1389: 1388: 1384: 1340: 1339: 1332: 1296: 1295: 1291: 1284: 1271: 1270: 1266: 1235: 1234: 1230: 1194: 1193: 1189: 1180: 1179: 1175: 1133: 1132: 1128: 1084: 1083: 1079: 1072: 1059: 1058: 1054: 1010: 1009: 1005: 990:OPC in Practice 987: 986: 979: 935: 934: 930: 925: 918: 902: 893: 889: 880: 843: 837: 814: 770:bioavailability 766: 725:Theobroma cacao 698: 684: 682:Dietary sources 670: 666: 662: 640: 636: 632: 607: 603: 599: 577: 573: 569: 547: 543: 539: 517: 513: 509: 502: 484: 480: 476: 454:Prodelphinidins 450: 446: 442: 416: 412: 408: 378: 374: 370: 332: 245: 100: 35: 28: 23: 22: 15: 12: 11: 5: 3465: 3463: 3455: 3454: 3449: 3444: 3442:Phytochemicals 3439: 3434: 3424: 3423: 3417: 3416: 3413: 3412: 3398: 3383: 3382: 3379: 3378: 3376: 3375: 3374: 3373: 3368: 3360: 3355: 3350: 3345: 3340: 3335: 3330: 3325: 3319: 3317: 3313: 3312: 3310: 3309: 3304: 3299: 3294: 3289: 3288: 3287: 3277: 3272: 3267: 3262: 3257: 3252: 3247: 3242: 3235: 3230: 3225: 3220: 3215: 3214: 3213: 3203: 3197: 3195: 3191: 3190: 3188: 3187: 3182: 3177: 3172: 3167: 3162: 3157: 3151: 3149: 3145: 3144: 3142: 3141: 3136: 3134:Mint chocolate 3131: 3126: 3121: 3116: 3111: 3106: 3101: 3096: 3091: 3086: 3081: 3079:Chocolate milk 3076: 3071: 3066: 3061: 3056: 3051: 3049:Chocolate chip 3046: 3041: 3039:Chocolate cake 3036: 3031: 3026: 3025: 3024: 3014: 3008: 3006: 3002: 3001: 2999: 2998: 2993: 2988: 2983: 2978: 2973: 2968: 2963: 2958: 2953: 2948: 2943: 2937: 2935: 2927: 2926: 2924: 2923: 2918: 2913: 2908: 2903: 2898: 2893: 2888: 2883: 2878: 2873: 2871:Phenethylamine 2868: 2863: 2858: 2853: 2848: 2843: 2837: 2835: 2831: 2830: 2828: 2827: 2820: 2815: 2810: 2804: 2802: 2794: 2793: 2786: 2784: 2783: 2776: 2769: 2761: 2752: 2751: 2749: 2748: 2742: 2740: 2736: 2735: 2733: 2732: 2727: 2721: 2719: 2718:Gallate esters 2715: 2714: 2709: 2707: 2703: 2702: 2700: 2699: 2689: 2679: 2663: 2658: 2653: 2648: 2643: 2638: 2633: 2628: 2622: 2615: 2613: 2609: 2608: 2606: 2605: 2595: 2588: 2586: 2582: 2581: 2579: 2578: 2573: 2568: 2563: 2561:Guibourtinidol 2558: 2553: 2548: 2543: 2538: 2532: 2526: 2524: 2518: 2517: 2511: 2509: 2508: 2501: 2494: 2486: 2477: 2476: 2471: 2468: 2467: 2464: 2463: 2461: 2460: 2455: 2453:Methylenedioxy 2450: 2445: 2440: 2435: 2430: 2425: 2419: 2417: 2411: 2410: 2407: 2406: 2404: 2403: 2397: 2395: 2389: 2388: 2386: 2385: 2374: 2372: 2363: 2357: 2356: 2354: 2353: 2348: 2342: 2340: 2334: 2333: 2330: 2329: 2327: 2326: 2323:Guibourtinidin 2315: 2313: 2307: 2306: 2304: 2303: 2292: 2290: 2281: 2279:Anthocyanidins 2275: 2274: 2271: 2270: 2268: 2267: 2261: 2255: 2253: 2247: 2246: 2244: 2243: 2238: 2233: 2227: 2225: 2219: 2218: 2216: 2215: 2204: 2202: 2196: 2195: 2193: 2192: 2181: 2179: 2167: 2166: 2164: 2163: 2152: 2150: 2138: 2137: 2135: 2134: 2128: 2126: 2119: 2113: 2112: 2109: 2108: 2106: 2105: 2099: 2097: 2091: 2090: 2088: 2087: 2072: 2070: 2064: 2063: 2061: 2060: 2049: 2047: 2041: 2040: 2038: 2037: 2026: 2024: 2015: 2006: 2000: 1999: 1993: 1991: 1990: 1983: 1976: 1968: 1962: 1961: 1947: 1946:External links 1944: 1941: 1940: 1909:(6): 2070–83. 1889: 1857: 1835: 1786: 1737: 1688: 1666: 1606: 1546: 1511: 1492:(2): 507–512. 1472: 1451:(4): 924–933. 1431: 1382: 1330: 1309:(5): 727–747. 1289: 1282: 1274:The Flavonoids 1264: 1228: 1187: 1173: 1126: 1097:(2): 485–493. 1077: 1070: 1052: 1003: 977: 927: 926: 924: 921: 920: 919: 903: 896: 894: 890: 883: 879: 876: 851:blood pressure 836: 833: 813: 810: 800:. The colonic 778:stereochemical 765: 762: 683: 680: 677: 676: 671: 668: 664: 660: 657: 652: 644: 643: 641: 638: 634: 630: 627: 622: 614: 613: 608: 605: 601: 597: 594: 592:Guibourtinidol 589: 581: 580: 578: 575: 571: 567: 564: 559: 551: 550: 548: 545: 541: 537: 534: 529: 521: 520: 518: 515: 511: 507: 504: 496: 488: 487: 485: 482: 478: 474: 471: 465: 457: 456: 451: 448: 444: 440: 437: 431: 423: 422: 417: 414: 410: 406: 403: 393: 385: 384: 379: 376: 372: 368: 365: 359: 351: 350: 347: 344: 341: 331: 328: 244: 241: 180:hydroxyl group 108:anthocyanidins 99: 96: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 3464: 3453: 3450: 3448: 3445: 3443: 3440: 3438: 3435: 3433: 3430: 3429: 3427: 3411: 3410: 3399: 3397: 3396: 3385: 3384: 3380: 3372: 3371:United States 3369: 3367: 3364: 3363: 3361: 3359: 3356: 3354: 3351: 3349: 3346: 3344: 3341: 3339: 3336: 3334: 3331: 3329: 3326: 3324: 3321: 3320: 3318: 3314: 3308: 3305: 3303: 3300: 3298: 3295: 3293: 3290: 3286: 3283: 3282: 3281: 3278: 3276: 3273: 3271: 3268: 3266: 3263: 3261: 3258: 3256: 3253: 3251: 3248: 3246: 3243: 3241: 3240: 3236: 3234: 3231: 3229: 3226: 3224: 3221: 3219: 3218:Big Chocolate 3216: 3212: 3209: 3208: 3207: 3204: 3202: 3199: 3198: 3196: 3192: 3186: 3183: 3181: 3178: 3176: 3173: 3171: 3170:Dutch process 3168: 3166: 3163: 3161: 3160:Broma process 3158: 3156: 3153: 3152: 3150: 3146: 3140: 3137: 3135: 3132: 3130: 3127: 3125: 3122: 3120: 3119:Hot chocolate 3117: 3115: 3112: 3110: 3107: 3105: 3102: 3100: 3097: 3095: 3092: 3090: 3087: 3085: 3082: 3080: 3077: 3075: 3072: 3070: 3067: 3065: 3062: 3060: 3057: 3055: 3052: 3050: 3047: 3045: 3042: 3040: 3037: 3035: 3032: 3030: 3027: 3023: 3020: 3019: 3018: 3017:Chocolate bar 3015: 3013: 3010: 3009: 3007: 3003: 2997: 2994: 2992: 2989: 2987: 2984: 2982: 2981:Raw chocolate 2979: 2977: 2974: 2972: 2969: 2967: 2964: 2962: 2959: 2957: 2954: 2952: 2949: 2947: 2944: 2942: 2939: 2938: 2936: 2934: 2928: 2922: 2919: 2917: 2914: 2912: 2909: 2907: 2904: 2902: 2899: 2897: 2894: 2892: 2889: 2887: 2884: 2882: 2879: 2877: 2876:Phenylalanine 2874: 2872: 2869: 2867: 2864: 2862: 2859: 2857: 2854: 2852: 2849: 2847: 2844: 2842: 2839: 2838: 2836: 2832: 2826: 2825: 2821: 2819: 2816: 2814: 2811: 2809: 2806: 2805: 2803: 2801: 2795: 2791: 2782: 2777: 2775: 2770: 2768: 2763: 2762: 2759: 2747: 2744: 2743: 2741: 2737: 2731: 2728: 2726: 2723: 2722: 2720: 2716: 2712: 2708: 2704: 2697: 2693: 2690: 2687: 2683: 2680: 2678: 2675: 2671: 2667: 2664: 2662: 2659: 2657: 2654: 2652: 2649: 2647: 2644: 2642: 2639: 2637: 2634: 2632: 2629: 2626: 2625:Arthromerin B 2623: 2620: 2619:Arthromerin A 2617: 2616: 2614: 2610: 2603: 2599: 2596: 2593: 2590: 2589: 2587: 2583: 2577: 2576:Robinetinidol 2574: 2572: 2569: 2567: 2564: 2562: 2559: 2557: 2556:Gallocatechin 2554: 2552: 2549: 2547: 2544: 2542: 2539: 2537:(Epicatechin) 2536: 2533: 2531: 2528: 2527: 2525: 2523: 2519: 2515: 2507: 2502: 2500: 2495: 2493: 2488: 2487: 2484: 2474: 2469: 2459: 2456: 2454: 2451: 2449: 2446: 2444: 2441: 2439: 2436: 2434: 2431: 2429: 2426: 2424: 2421: 2420: 2418: 2416: 2415:Miscellaneous 2412: 2402: 2399: 2398: 2396: 2394: 2390: 2383: 2379: 2376: 2375: 2373: 2371: 2367: 2364: 2362: 2358: 2352: 2349: 2347: 2344: 2343: 2341: 2339: 2335: 2324: 2320: 2317: 2316: 2314: 2312: 2308: 2301: 2297: 2294: 2293: 2291: 2289: 2285: 2282: 2280: 2276: 2265: 2262: 2260: 2257: 2256: 2254: 2252: 2248: 2242: 2239: 2237: 2234: 2232: 2229: 2228: 2226: 2224: 2220: 2213: 2209: 2208:Leucocyanidin 2206: 2205: 2203: 2201: 2197: 2190: 2186: 2183: 2182: 2180: 2177: 2172: 2168: 2161: 2160:Gallocatechol 2157: 2154: 2153: 2151: 2148: 2143: 2139: 2133: 2132:Luteoliflavan 2130: 2129: 2127: 2123: 2120: 2118: 2114: 2104: 2101: 2100: 2098: 2096: 2095:Neoflavonoids 2092: 2085: 2081: 2077: 2074: 2073: 2071: 2069: 2065: 2058: 2054: 2051: 2050: 2048: 2046: 2042: 2035: 2031: 2028: 2027: 2025: 2023: 2019: 2016: 2014: 2013:Anthoxanthins 2010: 2007: 2005: 2001: 1997: 1989: 1984: 1982: 1977: 1975: 1970: 1969: 1966: 1959: 1954: 1950: 1949: 1945: 1936: 1932: 1927: 1922: 1917: 1912: 1908: 1904: 1900: 1893: 1890: 1884: 1879: 1875: 1871: 1867: 1861: 1858: 1845: 1839: 1836: 1831: 1827: 1822: 1817: 1813: 1809: 1805: 1801: 1797: 1790: 1787: 1782: 1778: 1773: 1768: 1764: 1760: 1756: 1752: 1748: 1741: 1738: 1733: 1729: 1724: 1719: 1715: 1711: 1708:(4): e05239. 1707: 1703: 1699: 1692: 1689: 1677: 1670: 1667: 1662: 1658: 1653: 1648: 1644: 1640: 1636: 1632: 1628: 1624: 1620: 1613: 1611: 1607: 1602: 1598: 1593: 1588: 1584: 1580: 1576: 1572: 1568: 1564: 1560: 1553: 1551: 1547: 1542: 1538: 1534: 1530: 1526: 1522: 1515: 1512: 1507: 1503: 1499: 1495: 1491: 1487: 1483: 1476: 1473: 1468: 1464: 1459: 1454: 1450: 1446: 1442: 1435: 1432: 1427: 1423: 1418: 1413: 1409: 1405: 1401: 1397: 1393: 1386: 1383: 1378: 1374: 1369: 1364: 1360: 1356: 1352: 1348: 1344: 1337: 1335: 1331: 1326: 1322: 1317: 1312: 1308: 1304: 1300: 1293: 1290: 1285: 1279: 1275: 1268: 1265: 1260: 1256: 1252: 1248: 1244: 1240: 1232: 1229: 1224: 1220: 1215: 1210: 1206: 1202: 1198: 1191: 1188: 1183: 1177: 1174: 1169: 1165: 1161: 1157: 1153: 1149: 1145: 1141: 1137: 1130: 1127: 1122: 1118: 1113: 1108: 1104: 1100: 1096: 1092: 1088: 1081: 1078: 1073: 1067: 1063: 1056: 1053: 1048: 1044: 1039: 1034: 1030: 1026: 1022: 1018: 1014: 1007: 1004: 999: 995: 991: 984: 982: 978: 973: 969: 964: 959: 955: 951: 947: 943: 939: 932: 929: 922: 916: 912: 908: 900: 895: 887: 882: 877: 875: 873: 868: 864: 860: 856: 852: 848: 842: 834: 832: 830: 829:Health Canada 826: 822: 819: 811: 809: 807: 806:hippuric acid 803: 799: 795: 791: 787: 783: 779: 775: 771: 763: 761: 759: 755: 751: 747: 743: 739: 735: 731: 727: 726: 721: 717: 716: 711: 702: 697: 693: 689: 681: 675: 672: 658: 656: 655:Robinetinidol 653: 650: 646: 645: 642: 628: 626: 623: 620: 616: 615: 612: 609: 595: 593: 590: 587: 583: 582: 579: 565: 563: 560: 557: 553: 552: 549: 535: 533: 532:Epiafzelechin 530: 527: 523: 522: 519: 505: 500: 497: 494: 490: 489: 486: 472: 469: 466: 463: 459: 458: 455: 452: 438: 435: 432: 429: 425: 424: 421: 418: 404: 401: 397: 394: 391: 387: 386: 383: 380: 366: 363: 360: 357: 353: 352: 348: 345: 342: 339: 338: 335:Flavan-3-ols 329: 327: 309: 305: 301: 297: 293: 289: 285: 281: 277: 273: 269: 265: 257: 253: 251: 242: 236: 232: 230: 226: 221: 219: 215: 211: 207: 204: 199: 197: 193: 189: 185: 181: 177: 176:gallocatechin 173: 169: 167: 163: 159: 155: 151: 147: 143: 141: 136: 132: 130: 124: 120: 116: 111: 109: 105: 97: 95: 93: 89: 85: 81: 77: 73: 69: 65: 61: 57: 53: 49: 41: 37: 33: 19: 3405: 3391: 3348:Chocolatiers 3316:Other topics 3237: 3223:Chocolaterie 2921:Valeric acid 2896:Theophylline 2860: 2822: 2818:Cocoa solids 2813:Cocoa butter 2746:Thearubigins 2711:Phylloflavan 2692:Symplocoside 2522:Flavan-3-ols 2521: 2414: 2319:Apigeninidin 2264:Aromadendrin 2171:Flavan-4-ols 2142:Flavan-3-ols 2141: 1958:Flavan-3-ols 1906: 1902: 1892: 1873: 1870:EFSA Journal 1869: 1860: 1848:. Retrieved 1838: 1803: 1799: 1789: 1754: 1750: 1740: 1705: 1702:EFSA Journal 1701: 1691: 1680:. Retrieved 1669: 1626: 1622: 1569:(1): 29034. 1566: 1562: 1524: 1520: 1514: 1489: 1485: 1481: 1475: 1448: 1444: 1434: 1399: 1395: 1385: 1350: 1346: 1306: 1302: 1292: 1273: 1267: 1242: 1238: 1231: 1204: 1200: 1190: 1176: 1143: 1139: 1129: 1094: 1090: 1080: 1061: 1055: 1020: 1016: 1006: 989: 945: 941: 931: 906: 867:cocoa solids 863:health claim 855:blood lipids 844: 815: 789: 788:, mainly by 767: 723: 713: 707: 420:Procyanidins 399: 382:Procyanidins 263: 262: 246: 222: 218:thearubigins 200: 196:pyrocatechol 194:compared to 170: 166:pyrocatechol 144: 135:bioflavonoid 134: 128: 112: 101: 92:thearubigins 63: 51: 48:Flavan-3-ols 47: 46: 36: 3447:Polyphenols 3366:Switzerland 3228:Chocolatier 3180:Sugar crust 3012:Caffè mocha 2891:Theobromine 2861:Flavan-3-ol 2551:Fisetinidol 2458:Castavinols 2300:Delphinidin 2251:Flavanonols 2241:Eriodictyol 2068:Isoflavones 1876:(5). 2014. 1850:8 September 1629:(1): 9859. 861:approved a 825:hepatotoxic 794:metabolized 774:food matrix 758:preparation 734:pome fruits 562:Fisetinidol 396:Epicatechin 318:-tyrosine, 274:(TAL), E3, 270:(PAL), E2, 231:in plants. 203:gallic acid 184:epicatechin 150:epicatechin 88:theaflavins 3452:Flavonoids 3426:Categories 2956:Couverture 2906:Tryptophan 2901:Tryptamine 2881:Salsolinol 2856:Enkephalin 2851:Endorphins 2841:Anandamide 2834:Components 2799:Cocoa bean 2706:Acetylated 2612:Glycosides 2592:Meciadanol 2530:Afzelechin 2514:glycosides 2351:Leptosidin 2346:Aureusidin 2236:Naringenin 2231:Hesperidin 2223:Flavanones 2189:Luteoforol 2057:Kaempferol 2004:Flavonoids 1996:flavonoids 1682:2022-05-06 923:References 872:biomarkers 839:See also: 802:microbiome 782:epiatechin 754:processing 742:vegetables 686:See also: 349:Oligomers 229:glycosides 225:flavonoids 192:pyrogallol 56:flavonoids 3437:Nutrition 3432:Flavanols 3185:Tempering 3148:Processes 3124:beverages 2789:Chocolate 2566:Mesquitol 2401:Phloretin 2370:Chalcones 2361:Chalcones 2259:Taxifolin 2176:flavanols 2147:flavanols 2080:Genistein 2053:Quercetin 2045:Flavonols 1994:Types of 1146:: 68–75. 818:green tea 730:chocolate 625:Mesquitol 330:Aglycones 119:quercitin 52:flavanols 3394:Category 3194:Industry 3165:Conching 3005:Products 2976:Modeling 2966:Gianduja 2951:Compound 2916:Tyrosine 2911:Tyramine 2866:Lecithin 2846:Caffeine 2682:Polydine 2535:Catechin 2296:Cyanidin 2185:Apiforol 2156:Catechin 2076:Daidzein 2030:Apigenin 2022:Flavones 1935:36190328 1830:31504087 1781:28439881 1732:32625874 1661:29959422 1601:27363516 1506:11032751 1467:23864538 1426:30358831 1377:22794138 1325:15113710 1259:20843086 1223:10917927 1168:24094780 1160:22340533 1121:11402179 1047:22794138 998:45289285 972:29070515 835:Research 750:cultivar 362:Catechin 306:), E11, 264:Figure 1 259:Figure 1 188:catechin 146:Catechin 68:catechin 32:Flavonol 18:Flavanol 3408:Outline 3358:History 3175:Enrober 3114:Ganache 2946:Belgian 2384:, et.c. 2338:Aurones 2325:, et.c. 2302:, et.c. 2266:, et.c. 2214:, et.c. 2191:, et.c. 2162:, et.c. 2117:Flavans 2059:, et.c. 2036:, et.c. 2034:Chrysin 1926:9776652 1821:6821550 1772:6478304 1723:7009618 1652:6026136 1631:Bibcode 1592:4929566 1571:Bibcode 1541:5132890 1417:6290365 1368:3619154 1112:1540115 1038:3619154 963:5717727 913:; EGC, 878:Gallery 823:can be 821:extract 796:by the 786:jejunum 738:berries 501:, EGCG, 346:Formula 286:), E6, 162:catechu 158:isomers 154:epimers 140:tannins 60:flavans 3022:brands 2941:Baking 2571:Oritin 2378:Butein 2125:Flavan 2084:Orobol 1933:  1923:  1828:  1818:  1779:  1769:  1730:  1720:  1659:  1649:  1599:  1589:  1539:  1504:  1465:  1424:  1414:  1375:  1365:  1323:  1280:  1257:  1221:  1166:  1158:  1119:  1109:  1068:  1045:  1035:  996:  970:  960:  853:, and 756:, and 744:, and 720:cocoas 694:, and 322:-Phe, 314:-Tyr, 298:, E9, 294:, E8, 290:, E7, 278:, E4, 206:esters 3109:Fudge 2996:White 2991:Swiss 2932:Types 2739:Misc. 2086:et.c. 1164:S2CID 798:liver 470:, ECG 436:, EGC 340:Image 123:rutin 3139:Mole 2986:Ruby 2971:Milk 2961:Dark 1931:PMID 1852:2022 1826:PMID 1777:PMID 1728:PMID 1657:PMID 1597:PMID 1537:PMID 1502:PMID 1463:PMID 1422:PMID 1373:PMID 1321:PMID 1278:ISBN 1255:PMID 1219:PMID 1156:PMID 1117:PMID 1066:ISBN 1043:PMID 994:OCLC 968:PMID 865:for 768:The 746:wine 710:teas 343:Name 216:and 186:and 174:and 152:are 148:and 131:nols 127:flav 121:and 1921:PMC 1911:doi 1878:doi 1816:PMC 1808:doi 1804:110 1767:PMC 1759:doi 1718:PMC 1710:doi 1647:PMC 1639:doi 1587:PMC 1579:doi 1529:doi 1494:doi 1490:277 1453:doi 1412:PMC 1404:doi 1400:108 1363:PMC 1355:doi 1311:doi 1247:doi 1209:doi 1205:130 1148:doi 1144:719 1107:PMC 1099:doi 1095:126 1033:PMC 1025:doi 958:PMC 950:doi 946:175 400:cis 110:). 3428:: 2672:, 2668:, 2380:, 2321:, 2298:, 2210:, 2187:, 2158:, 2082:, 2078:, 2055:, 2032:, 1929:. 1919:. 1907:13 1905:. 1901:. 1874:12 1872:. 1868:. 1824:. 1814:. 1802:. 1798:. 1775:. 1765:. 1753:. 1749:. 1726:. 1716:. 1706:16 1704:. 1700:. 1655:. 1645:. 1637:. 1625:. 1621:. 1609:^ 1595:. 1585:. 1577:. 1565:. 1561:. 1549:^ 1535:. 1525:20 1523:. 1500:. 1488:. 1461:. 1449:98 1447:. 1443:. 1420:. 1410:. 1398:. 1394:. 1371:. 1361:. 1351:18 1349:. 1345:. 1333:^ 1319:. 1307:79 1305:. 1301:. 1253:. 1243:58 1241:. 1217:. 1203:. 1199:. 1162:. 1154:. 1142:. 1138:. 1115:. 1105:. 1093:. 1089:. 1041:. 1031:. 1021:18 1019:. 1015:. 980:^ 966:. 956:. 944:. 940:. 874:. 849:, 827:, 760:. 752:, 740:, 736:, 690:, 665:14 661:15 635:14 631:15 602:14 598:15 572:14 568:15 542:14 538:15 516:11 512:18 508:22 483:10 479:18 475:22 445:14 441:15 411:14 407:15 373:14 369:15 198:. 142:. 90:, 86:, 82:, 78:, 74:, 70:, 2780:e 2773:t 2766:v 2698:) 2694:( 2688:) 2684:( 2677:D 2674:C 2670:B 2604:) 2600:( 2505:e 2498:t 2491:v 2178:) 2174:( 2149:) 2145:( 1987:e 1980:t 1973:v 1937:. 1913:: 1886:. 1880:: 1854:. 1832:. 1810:: 1783:. 1761:: 1755:4 1734:. 1712:: 1685:. 1663:. 1641:: 1633:: 1627:8 1603:. 1581:: 1573:: 1567:6 1543:. 1531:: 1508:. 1496:: 1482:O 1469:. 1455:: 1428:. 1406:: 1379:. 1357:: 1327:. 1313:: 1286:. 1261:. 1249:: 1225:. 1211:: 1170:. 1150:: 1123:. 1101:: 1074:. 1049:. 1027:: 1000:. 974:. 952:: 917:. 907:O 790:O 669:6 667:O 663:H 659:C 639:6 637:O 633:H 629:C 606:4 604:O 600:H 596:C 576:5 574:O 570:H 566:C 546:5 544:O 540:H 536:C 514:O 510:H 506:C 481:O 477:H 473:C 449:7 447:O 443:H 439:C 415:6 413:O 409:H 405:C 402:) 377:6 375:O 371:H 367:C 324:L 320:L 316:L 312:L 129:o 64:H 34:. 20:)

Index

Flavanol
Flavonol

flavonoids
flavans
catechin
epicatechin gallate
epigallocatechin
epigallocatechin gallate
proanthocyanidins
theaflavins
thearubigins
proanthocyanidins
anthocyanidins
diastereoisomers
quercitin
rutin
flavonols
tannins
Catechin
epicatechin
epimers
isomers
catechu
pyrocatechol
Epigallocatechin
gallocatechin
hydroxyl group
epicatechin
catechin

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