Measurement of antioxidants in distilled spirits by a silver nanoparticle assay

Ingestion of antioxidants from the diet is associated with improved health. Total antioxidant capacity as gallic acid equivalents (GAE) of distilled spirits was determined using a modified and validated silver nanoparticle (SNaP) assay utilizing silver nanoparticles pre‐capped with starch and microw...

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Veröffentlicht in:Journal of the Institute of Brewing 2018-07, Vol.124 (3), p.291-299
Hauptverfasser: Bukovsky‐Reyes, Santiago E. R., Lowe, Luis E., Brandon, William M., Owens, Janel E.
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container_issue 3
container_start_page 291
container_title Journal of the Institute of Brewing
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creator Bukovsky‐Reyes, Santiago E. R.
Lowe, Luis E.
Brandon, William M.
Owens, Janel E.
description Ingestion of antioxidants from the diet is associated with improved health. Total antioxidant capacity as gallic acid equivalents (GAE) of distilled spirits was determined using a modified and validated silver nanoparticle (SNaP) assay utilizing silver nanoparticles pre‐capped with starch and microwave technology. GAE concentrations determined by the SNaP assay for the distilled spirits were validated by high‐performance liquid chromatography (HPLC) measurements of key antioxidant components including gallic acid, ellagic acid, caffeic acid, syringic acid, syringaldehyde and 2‐furaldehyde. SNaP assay and HPLC measurements of GAE were compared via statistical and graphical methods to demonstrate comparability. Application of the assay to 33 different distilled spirits demonstrated good agreement with published literature values, with the highest total antioxidant capacity values observed for bourbon samples followed by whisky, tequila and other types of liqueur. This study is novel for demonstrating the utility of a nanoparticle assay for determination of antioxidant capacity in distilled spirits with validation by HPLC. © 2018 The Institute of Brewing & Distilling
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Application of the assay to 33 different distilled spirits demonstrated good agreement with published literature values, with the highest total antioxidant capacity values observed for bourbon samples followed by whisky, tequila and other types of liqueur. 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subjects Acids
antioxidant
Antioxidants
Assaying
Breweries
Brewing
Caffeic acid
Distillation
distilled spirits
Distilleries
Ellagic acid
Gallic acid
Graphical methods
High performance liquid chromatography
Ingestion
Liquid chromatography
Liquor industry
Nanoparticles
Silver
silver nanoparticles
Spirits
Starch
Statistical analysis
Statistical methods
Syringaldehyde
Whiskey
Whisky
title Measurement of antioxidants in distilled spirits by a silver nanoparticle assay
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