Apple peels are rich in antioxidant bioactives and hence can possess the ability to inhibit human low density
lipoprotein cholesterol (LDL-C) oxidation. LDL-C oxidation is known to initiate atherosclerotic plaque
formation. Unique quercetin-rich (QAE) and triterpene-rich (TAE) apple peel extracts, their constituent
compounds and three in vivo quercetin metabolites were investigated for in vitro LDL-C oxidation inhibition.
Both extracts effectively inhibited Cu2+-induced LDL-C oxidation. IC50 of QAE and TAE for LDL-C
oxidation products were 0.06–8.29 mg/L and 29.58–95.49 mg/L, respectively. Quercetin compounds,
chlorogenic acid and phloridzin could contribute more to the effectiveness of QAE at physiological concentrations.
The three in vivo quercetin metabolites; quercetin-30-sulfate, quercetin-3-glucuronic acid
and isorhamnetin-3-glucuronic acid were effective at physiological concentrations and therefore, QAE
can be effective in LDL-C oxidation inhibition under physiological conditions. Constituent TAE compounds
did not perform well under Cu2+-induction. Overall, both extracts effectively inhibited LDL-C oxidation
in vitro.
2012 Elsevier Ltd. All rights reserved.
Apple peels are rich in antioxidant bioactives and hence can possess the ability to inhibit human low density
lipoprotein cholesterol (LDL-C) oxidation. LDL-C oxidation is known to initiate atherosclerotic plaque
formation. Unique quercetin-rich (QAE) and triterpene-rich (TAE) apple peel extracts, their constituent
compounds and three in vivo quercetin metabolites were investigated for in vitro LDL-C oxidation inhibition.
Both extracts effectively inhibited Cu2+-induced LDL-C oxidation. IC50 of QAE and TAE for LDL-C
oxidation products were 0.06–8.29 mg/L and 29.58–95.49 mg/L, respectively. Quercetin compounds,
chlorogenic acid and phloridzin could contribute more to the effectiveness of QAE at physiological concentrations.
The three in vivo quercetin metabolites; quercetin-30-sulfate, quercetin-3-glucuronic acid
and isorhamnetin-3-glucuronic acid were effective at physiological concentrations and therefore, QAE
can be effective in LDL-C oxidation inhibition under physiological conditions. Constituent TAE compounds
did not perform well under Cu2+-induction. Overall, both extracts effectively inhibited LDL-C oxidation
in vitro.
2012 Elsevier Ltd. All rights reserved.
การแปล กรุณารอสักครู่..

Apple peels are rich in antioxidant bioactives and hence can possess the ability to inhibit human low density
lipoprotein cholesterol (LDL-C) oxidation. LDL-C oxidation is known to initiate atherosclerotic plaque
formation. Unique quercetin-rich (QAE) and triterpene-rich (TAE) apple peel extracts, their constituent
compounds and three in vivo quercetin metabolites were investigated for in vitro LDL-C oxidation inhibition.
Both extracts effectively inhibited Cu2+-induced LDL-C oxidation. IC50 of QAE and TAE for LDL-C
oxidation products were 0.06–8.29 mg/L and 29.58–95.49 mg/L, respectively. Quercetin compounds,
chlorogenic acid and phloridzin could contribute more to the effectiveness of QAE at physiological concentrations.
The three in vivo quercetin metabolites; quercetin-30-sulfate, quercetin-3-glucuronic acid
and isorhamnetin-3-glucuronic acid were effective at physiological concentrations and therefore, QAE
can be effective in LDL-C oxidation inhibition under physiological conditions. Constituent TAE compounds
did not perform well under Cu2+-induction. Overall, both extracts effectively inhibited LDL-C oxidation
in vitro.
2012 Elsevier Ltd. All rights reserved.
การแปล กรุณารอสักครู่..
