3-O-Arabinoside

Quercetin glycosides rutin, hyperoside, quercitrin, quercetin-3-O-arabinoside Kaempferol -SJ-O-dirhamnoside, k-3-O-rhamnoside and -3-0-arabinoside... 

Querdtrin, isoquercitrin, hyperoside, rutin, quercetin-3-O-arabinoside (=avicularin) Myricetin-3-O-galactoside and -digalactosidc Kaempferol-3-O-glucoside and rhamnoside Isorhamnetin-3-O-galactaside, hesperidin Chlorogenic and caffeic acid... 

In addition, it was concluded that glycosylation of the aglyccme significantly lowers CrPrxl affinity for the substrate since the Km increased from 0.045 mM for quercetin to 1.589 mM for quercetin-3-O-arabinoside. 

Figure 7.65 Monomeric flavan-3-ols and the proanthocyanidin Bj dimers and C, trimer are found in fresh cocoa beans along with small amounts of quercetin-3-0-g ucoside and quercetin-3-O-arabinoside. Along with the proanthocyanidins, the amides N-caffeoyl-lo-hydroxytyrosine (clov-amide) and /V-p-coumaroyl-tyrosine (deoxyclovamide), and in particular /V-cinnamoyl-L-aspartic acid and N-caffeoyl-L-glutamic acid, contribute to the astringency of cocoa...

---