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Abstract Title:

White tea consumption slightly reduces iron absorption but not growth, food efficiency, protein utilization, or calcium, phosphorus, magnesium, and zinc absorption in rats.

Abstract Source:

J Physiol Biochem. 2011 Sep ;67(3):331-7. Epub 2011 Feb 19. PMID: 21336649

Abstract Author(s):

Francisca Pérez-Llamas, Daniel González, Lorena Cabrera, Cristobal Espinosa, Jose A López, Elvira Larqué, M Pilar Almajano, Salvador Zamora

Article Affiliation:

Francisca Pérez-Llamas

Abstract:

We investigated the antinutritional effect of white tea extract (0, 15, and 45 mg of the tea solid extract per kilogram body weight) incorporated in the drinking water of rats for 3 and 30 days. Gender-based differences were found for all these variables, except apparent protein digestibility and the apparent absorption of calcium, phosphorus, and iron. White tea extract consumption did not significantly change body weight gain, food intake, food efficiency, protein efficiency ratio, apparent protein digestibility, nitrogen balance, or the apparent absorption of calcium, phosphorus, magnesium, and zinc. Nevertheless, the apparent absorption of iron was slightly (15-18%) but significantly (P<0.05) lower in rats that consumed white tea at the highest dose compared with the control groups at both 3 and 30 days. Our results suggest that the usual consumption of white tea is safe, although its effect on long-term iron absorption at high doses warrants more detailed investigation.

Study Type : Animal Study
Additional Links
Pharmacological Actions : Iron Chelating Agents : CK(4) : AC(3)

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Sayer Ji
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