publication . Article . 2016

Spectrophotometric assessment of ferric reducing power of the instant coffee

Ekaterina Tishchenko;
Open Access Russian
  • Published: 01 Jan 2016
  • Publisher: Уральский федеральный университет
  • Country: Russian Federation
The methods of antioxidant activity determination of foodstuffs using different indicator systems were discussed. The investigation of ferric reducing power (FRP) of coffee and its individual phenolic components such as chlorogenic (CGA), caffeic (СА), ferulic (FA), gallic (GA), vanillic (VA), protocatechuic (PCA) and uric (UA) acids as well as quercetin (Qu) and catechol (C) using the spectrophotometric method with Fe(III) - o-Phen indicator system was carried out. It was shown that the sensitivity of the individual component determination decreased in the following sequence: Qu > GA > PCA ≈ CGA > CA > С ≈ UА > FA > VA. The examination of ferric reducing power ...
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