Antioxidant phenolic compounds of cassava (Manihot esculenta) from Hainan.

نویسندگان

  • Bo Yi
  • Lifei Hu
  • Wenli Mei
  • Kaibing Zhou
  • Hui Wang
  • Ying Luo
  • Xiaoyi Wei
  • Haofu Dai
چکیده

An activity-directed fractionation and purification process was used to isolate antioxidant components from cassava stems produced in Hainan. The ethyl acetate and n-butanol fractions showed greater DPPH˙and ABTS·+ scavenging activities than other fractions. The ethyl acetate fraction was subjected to column chromatography, to yield ten phenolic compounds: Coniferaldehyde (1), isovanillin (2), 6-deoxyjacareubin (3), scopoletin (4), syringaldehyde (5), pinoresinol (6), p-coumaric acid (7), ficusol (8), balanophonin (9) and ethamivan (10), which possess significant antioxidant activities. The relative order of DPPH· scavenging capacity for these compounds was ascorbic acid (reference) > 6 > 1 > 8 > 10 > 9 > 3 > 4 > 7 > 5 > 2, and that of ABTS·+ scavenging capacity was 5 > 7 > 1 > 10 > 4 > 6 > 8 > 2 > Trolox (reference compound) > 3 > 9. The results showed that these phenolic compounds contributed to the antioxidant activity of cassava.

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عنوان ژورنال:
  • Molecules

دوره 16 12  شماره 

صفحات  -

تاریخ انتشار 2011