Identification of Antioxidants in Young Mango Leaves by LC-ABTS and LC-MS
- Identification of Antioxidants in Young Mango Leaves by LC-ABTS and LC-MS
- Trakul Prommajak; Sang Moo Kim; 판철호; 김상민; Suthat Surawang; Nithiya Rattanapanone
- Young mango leaf; Antioxidant; HPLC-ABTS; Xanthone; Benzophenone
- Issue Date
- Chiang Mai University Journal of Natural Sciences
- VOL 13, NO 3, 317-330
- Thai eat the young leaves of mango as vegetables. Antioxidants in young
leaves of mango cultivars ‘Talapnak’, ‘Chok Anan’ and ‘Nam Dok Mai’ were
identified by high-performance liquid chromatography coupled with an online
ABTS assay (HPLC-ABTS) and electrospray ionization mass spectrometer
(HPLC-ESI-MS). Young leaves of mango cv. ‘Nam Dok Mai’ had the highest
antioxidant capacity. Major antioxidants in young mango leaves were mangiferin
and benzophenones (maclurin and iriflophenone derivatives). Mangiferin
presented in higher quantities than other compounds in each cultivar, with cv.
‘Talapnak’ containing the most (37.92±0.98 mg/g DW). The compound with
the highest antioxidant capacity in all cultivars was mangiferin pentoside (from
1.19±0.25 mmol TE/g DW in cv. ‘Chok Anan’ to 2.13±0.04 mmol TE/g DW in
cv. ‘Talapnak’). The compound with the highest Trolox equivalent antioxidant
capacity was maclurin galloyl glucoside (1.75±0.62 mol TE/mol).
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