| So what would
happen if rats were fed C3G as part of a high-fat diet? To
find out, researchers compared the body weights of mice fed
a high-fat diet with another group fed the same diet but with
the addition of the purple pigment. After 12 weeks, the results
were clear: mice with the pigment in their diet gained significantly
less weight. Even the fat in their bodies weighed significantly
less. |
| |
| In addition,
fat in the mice that didn’t get the pigment in their
feed was found to be growing in size, but showed no increase
in the pigment-fed mice. The high-fat diet also induced a
state of hyperglycemia along with an over-production of insulin.
But this was not so in the mice with the pigment in their
feed. In fact, both problems were completely normalized. |
| |
| Dietary purple
corn color had other benefits besides: it suppressed enzymes
in the body that help synthesize fatty acid substances. In
conclusion, the researchers stated that their tests of the
purple corn color provide a nutritional and biochemical basis
for the use of the pigment or anthocyanins as a “functional
food factor”— one that may be beneficial for preventing
diabetes and obesity. |
| |
|
Kenneth Jones is a medical
writer specializing in the field of medicinal plants.
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1. Brack-Egg A. Diccionario
Enciclopédico de Plantas Útiles del Perú.
Cuzco, Peru: Imprenta del Centro Bartolomé de Las Casas;
1999:537-538. |
2. Bridle P, Timber lake
CF. Anthocyanins as natural food colours — selected
aspects. Food Chem. 1997;58(1-2):103-109. |
| 3. Tsuda T, Horio F, Kitoh J, Osawa T. Protective
effects of dietary cyanidin 3-O-?-D-glucoside on ischemia-reperfusion
injury in rats. Arch Biochem Biophys. 1999;368(2):361-366. |
| 4. Espin JC, Soler-Rivas C, Wichers HJ, Garcia-Viguera
C. Anthocyanin-based natural colorants: A new source of antiradical
activity for foodstuff. J Agric Food Chem. 2000;48(5):1588-1592. |
| 5. Griffiths G, Trueman L, Crowther T, Thomas
B, Smith B. Onions — a global benefit to health. Phytother
Res. 2003;16:603-615. |
| 6. Tsuda T, Horio F, Osawa T. Dietary cyanidin
3-O-?-D-glucoside increases ex vivo oxidation resistance of
serum in rats. Lipids. 1998;33(6):583-588. |
| 7. Cevallos-Casals BA, Cisneros-Zevallos L. Stoichiometric
and kinetic studies of phenolic antioxidants from Andean purple
corn and red-fleshed sweetpotato. J Agric Food Chem. 2003;51(11):3313-3319. |
| 8. de Pascual-Teresa S, Santos-Buelga C, Rivas-Gonzalo
J C. LC-MS analysis of anthocyanins from purple corn cob. J
Sci Food Agric. 2002;82(9):1003-1006. |
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