A beetroot juice shot is a significant and convenient source of bioaccessible antioxidants

Peter C. Wootton-Beard; Lisa Ryan

doi:10.1016/j.jff.2011.05.007

A beetroot juice shot is a significant and convenient source of bioaccessible antioxidants

Peter C. Wootton-Beard, Lisa Ryan

Oxford Brookes University

Research output: Contribution to journal › Article › peer-review

149 Citations (Scopus)

Abstract

The total antioxidant capacity (TAC) and total polyphenol (TP) content of a beetroot juice shot (70. mL) was examined following in vitro digestion. TAC was assessed using the ferric reducing antioxidant power (FRAP) assay and TP content was measured using the Folin Ciocalteu (FC) method (measured as gallic acid equivalents (GAE) before and after an in vitro digestion procedure with simulated gastric (GAS) and duodenal (DUO) phases. The beetroot shot had a high TAC (697.9 ± 1.6μmol/70. mL) and TP content (68.4 ± 0.3 mg GAE/70 mL). FRAP values increased approximately 3-fold after GAS (2361.2 ± 20.9 μmol/70 mL) and remained high following DUO (1740.3 ± 21.1μmol/70. mL). TP content increased 5-fold following GAS (341.6 ± 4.8 mg GAE/70 mL) and remained 3.3-fold higher following DUO (223.2 ± 5.4 mg GAE/70 mL). The beetroot shot delivers a high amount of bioaccessible antioxidants and may be a cost effective and convenient method of increasing antioxidant status.

Original language	English
Pages (from-to)	329-334
Number of pages	6
Journal	Journal of Functional Foods
Volume	3
Issue number	4
DOIs	https://doi.org/10.1016/j.jff.2011.05.007
Publication status	Published - Oct 2011
Externally published	Yes

Keywords

Antioxidants
Beetroot
FRAP
Folin Ciocalteu
In vitro digestion
Polyphenols
Total antioxidant capacity
Vegetable juice

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10.1016/j.jff.2011.05.007

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title = "A beetroot juice shot is a significant and convenient source of bioaccessible antioxidants",

abstract = "The total antioxidant capacity (TAC) and total polyphenol (TP) content of a beetroot juice shot (70. mL) was examined following in vitro digestion. TAC was assessed using the ferric reducing antioxidant power (FRAP) assay and TP content was measured using the Folin Ciocalteu (FC) method (measured as gallic acid equivalents (GAE) before and after an in vitro digestion procedure with simulated gastric (GAS) and duodenal (DUO) phases. The beetroot shot had a high TAC (697.9 ± 1.6μmol/70. mL) and TP content (68.4 ± 0.3 mg GAE/70 mL). FRAP values increased approximately 3-fold after GAS (2361.2 ± 20.9 μmol/70 mL) and remained high following DUO (1740.3 ± 21.1μmol/70. mL). TP content increased 5-fold following GAS (341.6 ± 4.8 mg GAE/70 mL) and remained 3.3-fold higher following DUO (223.2 ± 5.4 mg GAE/70 mL). The beetroot shot delivers a high amount of bioaccessible antioxidants and may be a cost effective and convenient method of increasing antioxidant status.",

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AB - The total antioxidant capacity (TAC) and total polyphenol (TP) content of a beetroot juice shot (70. mL) was examined following in vitro digestion. TAC was assessed using the ferric reducing antioxidant power (FRAP) assay and TP content was measured using the Folin Ciocalteu (FC) method (measured as gallic acid equivalents (GAE) before and after an in vitro digestion procedure with simulated gastric (GAS) and duodenal (DUO) phases. The beetroot shot had a high TAC (697.9 ± 1.6μmol/70. mL) and TP content (68.4 ± 0.3 mg GAE/70 mL). FRAP values increased approximately 3-fold after GAS (2361.2 ± 20.9 μmol/70 mL) and remained high following DUO (1740.3 ± 21.1μmol/70. mL). TP content increased 5-fold following GAS (341.6 ± 4.8 mg GAE/70 mL) and remained 3.3-fold higher following DUO (223.2 ± 5.4 mg GAE/70 mL). The beetroot shot delivers a high amount of bioaccessible antioxidants and may be a cost effective and convenient method of increasing antioxidant status.

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KW - In vitro digestion

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A beetroot juice shot is a significant and convenient source of bioaccessible antioxidants

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Keywords

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