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Ascorbic acid contribution to ORAC values in berry extracts: An evaluation by the ORAC-pyrogallol red methodology
(2009)
An oxygen radical absorbance capacity (ORAC) method based on pyrogallol red bleaching (ORAC-PGR) was used to evaluate the scavenging activity of berry extracts (blackberry, blueberry, and raspberry). Among berry extracts, ...
FIA determination of ascorbic acid at low potential using a ruthenium oxide hexacyanoferrate modified carbon electrode
(PERGAMON-ELSEVIER SCIENCE LTD, 2008)
The anodic oxidation of ascorbic acid on a ruthenium oxide hexacyanoferrate modified electrode was characterized by cyclic voltammetry. On this modified surface, the electrocatalytic process allows the determination of ...
Effect of ascorbic acid deficiency on the growth, gill filament lesions and behavior of pacu fry (Piaractus mesopotamicus Holmberg, 1887)
(1995-01-01)
The effect of ascorbic acid deficiency was determined in Piaractus mesopotamicus Holmberg, 1887, fish (pacu) under laboratory conditions. A total of 120 fish with an average body weight of 8.64 ± 1.62 g and measuring 6.15 ...
Effect of ascorbate in the reduction of transferrin-associated iron in endocytic vesicles
(Kluwer Academic Publishers-Plenum Publishers, 1992)
Externally added ascorbate or NADH effectively reduced ferricyanide and promoted the exit of Fe3+ originated from acid-destabilized transferrin contained inside endocytic vesicles. The effect of ascorbate was mediated by ...
Silsesquioxane Modified with PAMAM Dendrimer and a Bimetallic Complex for Electrochemical Detection of Ascorbic Acid
(2021-02-01)
Octakis(3-chloropropyl)octasilsesquioxane (S) was organofunctionalized with the PAMAM Dendrimer G.0 (SPD). After functionalization, silsesquioxane interacts with copper chloride and subsequently with potassium hexacyanoferrate ...
Ascorbic acid in cosmetic formulations: Stability, in vitro release, and permeation using a rapid, inexpensive, and simple method
(Taylor & Francis Inc, 2017-01-01)
Ascorbic acid (AA) is involved in important metabolic processes in the human body. However, its chemical instability requires the assessment of products containing AA. The aim of this study was to develop systems that ...