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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

Netzel, M. and Fanning, K. and Netzel, G. and Zabaras, D. and Karagianis, G. and Treloar, T. and 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(s): 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
Deposited On:25 Feb 2014 06:03
Last Modified:25 Feb 2014 06:03

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