… (TP) and proanthocyanidins (PAs) in the leaves and branches … constants of proanthocyanidins
(PAs) extracted from leaves (… good sources for further development of tyrosinase inhibitors, …

… extracted from acorn shells that has been suggested to have potential skin whitening properties.
This study investigated the tyrosinase inhibition activity of extracted … proanthocyanidins) …

… of 5 kinds of proanthocyanidins in Rhododendron leaf extract studied the … tyrosinase
analysis of the above compounds show reversible and mixed competitive tyrosinase inhibitors…

… –tyrosinase–substrate complex (K IS ) were obtained through slopes of the secondary fitted
lines (Figure 4C,D). As expected, tannins showed a K I value of 0.081 ± 0.005, close to the K …

… components in the leaves of Rhododendron × pulchrum treated with … extraction and
biosynthesis of flavonoids from R. × pulchrum flowers, while this study focused only on extraction …

… been revealed that PA obtained from mung bean seed, rhododendron pulchrum leaves, and
the … the impact of oligomeric procyanidins (OPC) on browning inhibition and preservation of …

… Coincidentally, PAs are likewise effective as calcium channel blockers when applied to
manage blood pressure. Scientists used Campomanesia xanthocarpa leaf extract (leaves …

… 5A shows a typical electropherogram obtained by the enzymatic oxidation of Do; two peaks
… Result obtained in this study is also comparable to the reported values of 0.502 mmol L −1 […

… proanthocyanidin B2, quercetin, cunninghamine, and myricetin in tea flowers are lower than
that in tea leaves [… in rhododendrons, and the content of cyanin-3-O-rutin in the petals of pink …

… extraction After 60 days of ensiling, 50-g samples of the ensiled sainfoin treatments were
obtained and metabolites extracted … the dynamics of isoflavone, proanthocyanidins, polyphenol, …