Flavonol content in the water extract of the mulberry (Morus alba L.) leaf and their antioxidant capacities.
J Food Sci
; 76(6): C869-73, 2011 Aug.
Article
in En
| MEDLINE
| ID: mdl-22417484
ABSTRACT
UNLABELLED The biological activities of the mulberry (Morus alba L.) leaf have been attributed to its flavonoid content. The water extract of the mulberry leaf (WEML) was prepared by autoclaving at 121 °C for 15 min, and the flavonol content of the WEML was determined by HPLC The WEML contained 4 flavonols in the following order quercetin-3-ß-D-glucose (QT-G) > quercetin-3-O-glucose-6â³-acetate (QT-GA) > rutin (RT) > quercetin (QT). In the oxygen radical absorbance capacity (ORAC) assay, QT had the highest peroxyl radical-scavenging capacity and a similar hydroxyl radical-scavenging capacity as its glycosides (QT-G, QT-GA, and RT). QT exhibited a stronger cellular antioxidant capacity (CAC) against 2,2'-Azobis(2-amidinopropane) dihydrochloride (AAPH)- and Cu²âº-induced oxidative stress in HepG2 cells compared to its glycosides, indicating that the intracellular antioxidant capacity of QT and its glycosides may depend upon both the permeability across the cell membrane and the peroxyl or hydroxyl radical-scavenging capacity. PRACTICAL APPLICATION The information presented might be used for developing mulberry leaf-based functional foods.
Full text:
1
Database:
MEDLINE
Main subject:
Plant Extracts
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Plant Leaves
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Morus
/
Flavonols
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Antioxidants
Language:
En
Journal:
J Food Sci
Year:
2011
Type:
Article