Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 58, Issue 1, Pages 635-641Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf903046u
Keywords
Phytoferritin; anthocyanins; ascorbate; iron release; hydroxyl radical; interaction
Funding
- China High-Tech (863) project [2007AA10Z311]
- Key Laboratory Open Fund of Soybean Biology of Education Ministry
- National Natural Science Foundation of China [30972045]
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Anthocyanins have received much attentions due to their various activities. Phytoferritin represents a novel alternative for iron supplementation. In the present study, it was found that all tested anthocyanins such as cyanidin (Cy), delphinidin (Dp), delphinidin-3-O-glucoside (Dp3glc), malvidin (Mv), petunidin (Pt), and petunidin-3-O-glucoside (Pt3glc) had a strong interaction with SSF, respectively, resulting in iron release from soybean seed ferritin (SSF) just as for ascorbate. The order of iron release from SSF is as follows: Dp > Cy > Pt > Mv > Dp3glc > Pt3glc. Their ability to liberate iron from SSF is associated with the size of the molecules and the chemical structures but mainly depends oil their chelating activity with Fe2+. Interestingly, these pigments inhibited SSF degradation during the iron release to different extents while ascorbate did not. The difference in protective effects on SFF between ascorbate and the anthocyanins is in good agreement with their different Fe2+-chelating activities.
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