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Urinary excretion of antioxidants in healthy humans following queen garnet plum juice ingestion: a new plum variety rich in antioxidant compounds

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Netzel, M., Fanning, K., Netzel, G., Zabaras, D., Karagianis, G., Treloar, T., Russell, D. and Stanley, R. (2012) Urinary excretion of antioxidants in healthy humans following queen garnet plum juice ingestion: a new plum variety rich in antioxidant compounds. Journal of Food Biochemistry, 36 (2). pp. 159-170. ISSN 0145-8884

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Article Link: http://dx.doi.org/10.1111/j.1745-4514.2010.00522.x

Abstract

In recent years, there has been intense interest in the potential health benefits of dietary derived plant polyphenols and antioxidants. A new variety of Prunus salicina, Queen Garnet plum (QGP), was developed as a high anthocyanin, high antioxidant plum, in a Queensland Government breeding program. Following consumption of 400 mL QGP juice (QGPJ; 1,117 mg anthocyanins) by two healthy male subjects, QGP anthocyanins (cyanidin-3-glucoside and cyanidin-3-rutinoside) were excreted mainly as methylated and glucuronidated metabolites in urine (0.5% of the ingested dose within 24 h). Furthermore, QGPJ intake resulted in a threefold increase in hippuric acid excretion (potential biomarker for total polyphenols intake and metabolite), an increased urinary antioxidant capacity and a decreased malondialdehyde excretion (biomarker for oxidative stress) within 24 h as compared with the polyphenol-/antioxidant-free control. Results from this pilot study suggest that metabolites, and not the native QGP anthocyanins/polyphenols, are most likely the bioactive compounds in vivo.

Item Type:Article
Business groups:Crop and Food Science
Additional Information:Netzel, Michael Fanning, Kent Netzel, Gabriele Zabaras, Dimitrios Karagianis, Gloria Treloar, Tony Russell, Dougal Stanley, Roger
Subjects:Science > Biology > Biochemistry
Plant culture > Fruit and fruit culture
Live Archive:25 Feb 2014 06:03
Last Modified:03 Sep 2021 16:49

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