2011
DOI: 10.1002/pca.1295
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Identification of 2″‐Galloylated Flavonol 3‐O‐Glycosides Accumulating in Developing Leaves of Persimmon

Abstract: This study showed that four 2″-galloylated flavonol glycosides had accumulated in developing leaves of persimmon by the end of May through a rapid 2″-galloylation of the corresponding nongalloylated flavonol glycosides.

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Cited by 25 publications
(29 citation statements)
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“…25) PLEg might have some scavenging activity toward DOX-treated cells in terms of ROS elimination. 15) However, the concentration of PLEg required for ROS elimination was comparatively higher (mg/mL order) than that for ATM inhibition (mg/mL order). Our results suggest that mg/mL of PLEg did not contribute to ROS scavenging in this case.…”
Section: Effect Of Persimmon Leaf Extract On the G2/m Checkpointmentioning
confidence: 99%
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“…25) PLEg might have some scavenging activity toward DOX-treated cells in terms of ROS elimination. 15) However, the concentration of PLEg required for ROS elimination was comparatively higher (mg/mL order) than that for ATM inhibition (mg/mL order). Our results suggest that mg/mL of PLEg did not contribute to ROS scavenging in this case.…”
Section: Effect Of Persimmon Leaf Extract On the G2/m Checkpointmentioning
confidence: 99%
“…Persimmon leaf extract (PLE) was prepared as described previously. 15) Persimmon leaves were collected from the Niitsu area of Niigata City in Japan. The dried persimmon leaves were treated with boiling water for 30 min, and the soluble extract was subsequently partitioned into the ethyl acetate layer which was used as PLE.…”
Section: Methodsmentioning
confidence: 99%
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“…The eight flavonol components in PLF consisted of four non-galloylated flavonols (kaempferol 3-O-glucoside, kaempferol 3-O-galactoside, quercetin 3-O-glucoside, and quercetin 3-O-galactoside) and four galloylated flavonols (their 2"-gallolyated flavonol glycosides). The eight flavonols in PLF were identified and quantified as described previously [22]. The percentage (% w/w) of flavonols in PLF were 29% kaempferol 3-O-2"-galloylglucoside, 16% kaempferol 3-O-2"-galloylgalactoside, 10% quercetin 3-O-2"-galloylglucoside, 4% quercetin 3-O-2"-galloylgalactoside, 18% kaempferol 3-O-glucoside, 11% kaempferol 3-O-galactoside, 7% quercetin 3-O-glucoside, and 4% quercetin 3-O-galactoside.…”
Section: Preparation Of Persimmon Leaf Flavonolsmentioning
confidence: 99%
“…Persimmon leaves are consumed as health promoting tea in Asia, and are reported to have various biological effects such as anti-oxidative [11][12][13], anticancer [14,15], anti-hypertensive [16,17], anti-inflammatory [18,19] and anti-hyperglycemic [20,21]. PLF contains eight flavonols, and characterized by content of four 2"-galloylated flavonols [22]. Until now, there has been no practical source of plants readily available for the preparation of 2"-galloylated flavonols.…”
Section: Introductionmentioning
confidence: 99%