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Molecules 2018, 23(4), 983; https://doi.org/10.3390/molecules23040983

Plasma and Salivary Non-Urate Total Antioxidant Capacity Does Not Depend on Dietary Vitamin C, E, or β-Carotene Intake in Older Subjects

1
Department of Hygiene and Health Promotion, Medical University of Lodz, Hallera St. 1, 90-647 Łódź, Poland
2
Department of Geriatrics, Medical University of Lodz, Pieniny St. 30, 90-993 Łódź, Poland
3
Department of General Physiology, Medical University of Lodz, Mazowiecka St. 6/8, 92-215 Łódź, Poland
4
Department of Clinical Physiology, Medical University of Lodz, Mazowiecka St. 6/8, 92-215 Łódź, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Fabio Galvano
Received: 1 March 2018 / Revised: 17 April 2018 / Accepted: 21 April 2018 / Published: 23 April 2018
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Abstract

The native Total Antioxidant Capacity (TAC) of plasma and saliva is generally determined by uric acid (UA). Several studies have assessed the impact of habitual dietary antioxidative vitamin intake on TAC, but it remains unknown whether it influences Non-Urate Total Antioxidant Capacity (Nu-TAC), i.e., TAC after enzymatic UA elimination. The purpose of this study was to assess whether the intake of antioxidative vitamins C, E, and β-carotene, provided with usual daily food rations, affects plasma and salivary Nu-TAC. The study involved 56 older subjects (aged 66.9 ± 4.3 years), divided into two age- and sex-matched groups: group 1 (n = 28), with lower combined vitamin C, E, and β-carotene intake, and group 2 (n = 28), with higher intake. A 24 h dietary recall was obtained from each individual. Nu-TAC was assessed simultaneously with two methods in plasma (Ferric Reducing Ability of Plasma—Nu-FRAP, 2.2-diphenyl-1-picryl-hydrazyl—Nu-DPPH) and in saliva (Nu-FRAS and Nu-DPPHS test). No differences were found in the Nu-TAC parameters between the groups, either in plasma (Nu-FRAP, Nu-DPPH) or in saliva (Nu-FRAS, Nu-DPPHS) (p > 0.05). No plasma or salivary Nu-TAC indices correlated with dietary vitamin C, E, or β-carotene intake or with other nutrients. Habitual, not extra-supplemented dietary intake does not significantly affect plasma or salivary Nu-TAC. View Full-Text
Keywords: non-urate total antioxidant capacity; plasma; saliva; nutrition; habitual diet; vitamin C intake; vitamin E intake; β-carotene; DPPH; FRAP non-urate total antioxidant capacity; plasma; saliva; nutrition; habitual diet; vitamin C intake; vitamin E intake; β-carotene; DPPH; FRAP
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Gawron-Skarbek, A.; Guligowska, A.; Prymont-Przymińska, A.; Nowak, D.; Kostka, T. Plasma and Salivary Non-Urate Total Antioxidant Capacity Does Not Depend on Dietary Vitamin C, E, or β-Carotene Intake in Older Subjects. Molecules 2018, 23, 983.

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