@article{fdi:010090332,
  title = {{A}ntioxidant capacity of polar and non-polar extracts of four {A}frican green leafy vegetables and correlation with polyphenol and carotenoid contents},
  author = {{F}ioroni, {N}elly and {M}ouquet {R}ivier, {C}laire and {M}eudec, {E}. and {C}heynier, {V}. and {B}oudard, {F}. and {H}emery, {Y}ouna and {L}aurent-{B}abot, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n sub-{S}aharan {A}frica, chronic malnutrition is often associated with intestinal inflammation and oxidative stress. {A}frican green leafy vegetables ({GLV}s), commonly consumed by these populations and rich in bioactive compounds, may improve the antioxidant status. {T}he aim of this study was to measure the antioxidant capacity using complementary assays ({DPPH}, {FRAP}, {ABTS}, {ORAC} and {NO} scavenging) in polar and non-polar leaf extracts of four {A}frican {GLV}s, cassava ({M}anihot esculenta), roselle ({H}ibiscus sabdariffa), jute mallow ({C}orchorus olitorius), and amaranth ({A}maranthus spp.), with spinach ({S}pinacia oleracea) chosen as a reference. {T}heir antioxidant capacity was correlated with their total polyphenol ({TPC}), flavonoid ({TFC}), condensed tannin, lutein, and beta-carotene contents. {I}dentification of phenolic compounds by {UHPLC}-{DAD}-{MS}/{MS} revealed the presence of three main classes of compound: flavonols, flavones, and hydroxycinnamic acids. {C}assava and roselle leaves presented significantly higher {TPC} and {TFC} than amaranth, jute mallow, and spinach. {T}hey also exhibited the highest antioxidant capacity, even higher than that of spinach, which is known for its important antioxidant effect. {T}he antioxidant capacity was 2 to 18 times higher in polar than non-polar extracts, and was more strongly correlated with {TPC} and {TFC} ({R} > 0.8) than with beta-carotene and lutein contents. {T}hese findings provide new data especially for cassava and roselle leaves, for which studies are scarce, suggesting an appreciable antioxidant capacity compared with other leafy vegetables.},
  keywords = {bioactive compounds ; flavonoids ; beta-carotene ; lutein ; {M}anihot esculenta ; {H}ibiscus sabdariffa ; {C}orchorus olitorius ; {A}maranthus spp. ; {S}pinacia oleracea ; {AFRIQUE} {SUBSAHARIENNE}},
  booktitle = {},
  journal = {{A}ntioxidants},
  volume = {12},
  numero = {9},
  pages = {1726 [21 ]},
  year = {2023},
  DOI = {10.3390/antiox12091726},
  URL = {https://www.documentation.ird.fr/hor/fdi:010090332},
}