Term Name: tannin
Synonyms: tannins
Definition: Any of a group of astringent polyphenolic vegetable principles or compounds, chiefly complex glucosides of catechol and pyrogallol.
Ontology: ChEBI [CHEBI:26848]  ( EBI )

Relationships
is a type of: polyphenol
has subtype: (-)-4-O-(4-O-beta-D-glucopyranosylcaffeoyl)quinic acid (3-heptyl-5-hydroxyphenyl) 2-heptyl-4-hydroxy-6-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxybenzoate (3-heptyl-5-hydroxyphenyl) 2-heptyl-4-hydroxy-6-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-[[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]oxan-2-yl]oxybenzoate 1,2,11,12-Tetramethoxy-6,7-dimethyl-5,6,7,8-tetrahydrodibenzo[a,c][8]annulene-3,10-diol 1-O-(3,4,5-Trimethoxybenzoyl)-b-D-glucopyranoside 1-O-(3,4,5-Trimethoxybenzoyl)-beta-L-galactopyranose 2,2',5,5'-tetramethoxy-3,4,3'4'-bi-methylenedioxy-6,6'-dimethylbiphenyl 2,3,4,7,8,9,15,22,23,28,33-undecahydroxy-14-(hydroxymethyl)-13,25,32,35-tetraoxaoctacyclo[14.13.3.3??,??.0?,??.0?,??.0??,??.0??,??.0??,??]pentatriaconta-1,3,5(30),6,8,10,19(24),20,22-nonaene-12,27,31,34-tetrone 2,3-Di-O-methylellagic acid 2,8-Di-O-methylellagic acid 2-(5-{[(3,5-dihydroxy-4-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}phenyl)methoxy]carbonyl}-2,3-dihydroxyphenoxy)-3,4,5-trihydroxybenzoic acid 2-[6'-(5,7-Dihydroxy-4-oxo-3-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-4H-chromen-2-yl)-2',3',4,4',5,6-hexahydroxy-[1,1'-biphenyl]-2-yl]-5,7-dihydroxy-3,4-dihydro-2H-1-benzopyran-3-yl 3,4,5-trihydroxybenzoate 2-Cinnamoyl-1,6-digalloyl-beta-D-glucopyranose 2-Cinnamoyl-1-galloyl-beta-D-glucopyranose 2-O-(4-Hydroxycinnamoyl)-1-O-galloyl-beta-D-glucopyranoside 2-{[hydroxy({3,4,8,9,10-pentahydroxy-6-oxo-2-[5,6,7-trihydroxy-1-oxo-3-(1,2,3,4-tetrahydroxybutyl)-1H-isochromen-8-yl]-6H-benzo[c]chromen-1-yl})methylidene]amino}acetic acid 2-{[hydroxy({3,4,8,9,10-pentahydroxy-6-oxo-6H-benzo[c]chromen-1-yl})methylidene]amino}acetic acid 3,4,3'-Tri-O-methylellagic acid 3,4,5-trihydroxy-6-(2-{[2-methoxy-4-(prop-2-en-1-yl)phenoxy]carbonyl}phenoxy)oxane-2-carboxylic acid 3,4,5-trihydroxy-6-(4-hydroxy-3-methoxybenzoyloxy)oxane-2-carboxylic acid 3,4-dihydroxy-5-[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-[[4-(2-hydroxypropan-2-yl)cyclohexene-1-carbonyl]oxymethyl]oxan-2-yl]oxybenzoic acid 3,4-Hexahydroxydiphenoylarabinose 3-Glucogallic acid 3-Methylellagic acid 2-(4-galactosylglucoside) 3-Methylellagic acid 8-(2-acetylrhamnoside) 3-Methylellagic acid 8-rhamnoside 4-(6-carboxy-2,3,4-trihydroxyphenoxy)-4',5,5',6,6'-pentahydroxy-[1,1'-biphenyl]-2,2'-dicarboxylic acid 4-(beta-D-glucopyranosyloxy)-3-methoxybenzoic acid 4-chloro-7,4'-dihydroxy-5,2'-dimethoxy-2-methylformate-6'-methybenzophone 4-Glucosyl gallate 5-(methoxymethyl)-4-[2,3,4-trihydroxy-6-(methoxymethyl)phenyl]benzene-1,2,3-triol 6-(3-carboxy-2,4,6-trihydroxyphenoxy)-3,4,5-trihydroxyoxane-2-carboxylic acid 6-(5-carboxy-2-hydroxy-3-methoxyphenoxy)-3,4,5-trihydroxyoxane-2-carboxylic acid 6-(5-carboxy-2-hydroxyphenoxy)-3,4,5-trihydroxyoxane-2-carboxylic acid 6-[2,3-dihydroxy-5-({[2,3,5-trihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy}carbonyl)phenoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid 6-[2,3-dihydroxy-5-({[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}carbonyl)phenoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid 6-[2,3-dihydroxy-5-({[4-hydroxy-6-(hydroxymethyl)-3,5-bis(3,4,5-trihydroxybenzoyloxy)oxan-2-yl]oxy}carbonyl)phenoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid 6-[2,6-dihydroxy-4-({[4-hydroxy-6-(hydroxymethyl)-3,5-bis(3,4,5-trihydroxybenzoyloxy)oxan-2-yl]oxy}carbonyl)phenoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid 6-[2-(benzoyloxy)-5-(prop-2-en-1-yl)phenoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid 6-[3-(benzoyloxy)-2-methoxy-6-(prop-2-en-1-yl)phenoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid 6-Cinnamoyl-1,2-digalloylglucose 6-o-[(2e)-3-(4-hydroxyphenyl)-2-propenoyl]-1-o-(3,4,5-trihydroxybenzoyl)hexopyranose 6-{4-[(5-carboxy-2,3-dihydroxyphenoxy)carbonyl]-2,6-dihydroxyphenoxy}-3,4,5-trihydroxyoxane-2-carboxylic acid 7-Hydroxy-6-methoxy-alpha-pyrufuran 8-(6-carboxy-2,3,4-trihydroxyphenoxy)-3,4,9,10-tetrahydroxy-6-oxo-6H-benzo[c]chromene-1-carboxylic acid [2,6-dihydroxy-4-({[5-hydroxy-2-(hydroxymethyl)-4,6-bis(3,4,5-trihydroxybenzoyloxy)oxan-3-yl]oxy}carbonyl)phenyl]oxidanesulfonic acid [3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl] 3,4,5-trihydroxybenzoate [3,4,5-Trihydroxy-6-(hydroxymethyl)oxan-2-yl] 3-hydroxy-4,5-dimethoxybenzoate [4-({[2,3-dihydroxy-6-(hydroxymethyl)-5-(3,4,5-trihydroxybenzoyloxy)oxan-4-yl]oxy}carbonyl)-2,6-dihydroxyphenyl]oxidanesulfonic acid [4-({[3,5-dihydroxy-6-(hydroxymethyl)-4-(3,4,5-trihydroxybenzoyloxy)oxan-2-yl]oxy}carbonyl)-2,6-dihydroxyphenyl]oxidanesulfonic acid [5-Hydroxy-2,4-bis[(3,4,5-trihydroxybenzoyl)oxy]-6-[(3,4,5-trihydroxybenzoyl)oxymethyl]oxan-3-yl] 3,4,5-trihydroxy-2-(2-methoxy-2-oxoethyl)benzoate agrimoniin Alnusiin Alterporriol O Alterporriol S Amidepsine F Amidepsine G Amidepsine H Amidepsine I Amritoside Angeloylgomisin h Aquastatin A Arundinone B Ascotricin A Ascotricin B Benzocamphorin E benzoic acid [(2R,3S)-5,7-dibenzoyloxy-2-(3,4-dibenzoyloxyphenyl)-3,4-dihydro-2H-1-benzopyran-3-yl] ester Besigomsin Bicornin Bireticulol Castacrenin A Casuarictin Casuarinin Chebulagic acid Chebulinic acid Chinese gallotannin chlorogenic acid Conoideoglucoside C Coriariin A CRM646-A CRM646-B Degalloyltheaflavonin Deoxygomisin A Deoxyschizandrin Ellagic acid deoxyhexoside Ellagic acid di-hexoside Ellagic acid hexoside Ellagic acid pentoside Emblicanin A Emblicanin B Epigallocatechin 3-O-vanillate Fucofuroeckol B Gemin A Geraniin Gomisin B Gomisin D Gomisin H Gomisin J Gomisin L1 methyl ether Granatin B Guavin B Heteroclitin D Heterophylliin E hydrolysable tannin hyperidixanthone Isogomisin O Isohernandezine Isoterchebin Kadsurin, (-)- Lagerstannin B Mallotinic acid Mallotusinic acid Methyl 3,4,6-tri-O-galloyl-beta-D-glucopyranoside Methyl 3,4-dihydroxy-5-prenylbenzoate 3-glucoside Methyl 3-chloro-2-(2,4-dimethoxy-6-methylphenoxy)-6-hydroxy-4-methoxybenzoate Methyl 4,6-di-O-galloyl-beta-D-glucopyranoside Pedunculagin Pedunculagin II (Digalloyl-HHDP-hex) phlorotannin Picroside ii proanthocyanidin Protocatechuic acid 3-glucoside Pterocaryanin B Punicalin Rikuzenol Rubrisandrin A(2:1 Inseparable mixture of regeoisomers) Rugosin D Saccharumoside A Saccharumoside B sanguiin h4 Schisantherin A Schizandrin Schizandrin A Syringic acid glucoside Tellimagrandin I Terminalin Theasinensin B Theasinensin C Thonningianin A Thonningianin B Tigloylgomicin H Vanillic acid glucoside vanillic acid glucuronide Vanillic acid-4-O-glucuronide Wuweizisu C Yunnankadsurin B {6,7,8,11,12,13,21,22-octahydroxy-3,16-dioxo-2,17,20-trioxatetracyclo[17.3.1.0?,?.0??,??]tricosa-4,6,8,10,12,14-hexaen-23-yl}oxidanesulfonic acid {6,7,8,11,12,13,21,23-octahydroxy-3,16-dioxo-2,17,20-trioxatetracyclo[17.3.1.0?,?.0??,??]tricosa-4,6,8,10,12,14-hexaen-22-yl}oxidanesulfonic acid
has_role: astringent