Electrochemical Methods for Estimation of Antioxidant Activity of Various Biological Objects

2014 ◽  
pp. 301-316
Keyword(s):  
Antioxidant Activity ◽  
Electrochemical Methods ◽  
Biological Objects

scholarly journals Electrochemical Methods and (Bio) Sensors for Rosmarinic Acid Investigation

Chemosensors ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 74
Author(s):  
Iulia Gabriela David ◽  
Dana Elena Popa ◽  
Mihaela Buleandră ◽  
Mihaela Carmen Cheregi
Keyword(s):  
Antioxidant Activity ◽  
Dynamic Systems ◽  
Phenolic Acid ◽  
Rosmarinic Acid ◽  
Electrochemical Methods ◽  
Redox Active ◽  
Polyphenolic Content ◽  
Total Polyphenolic Content ◽  
Electroactive Species ◽  
Electrochemical Methods Of Analysis

Rosmarinic acid (RA) is an important bioactive phenolic acid with significant biochemical activities, including the antioxidant one. It is widely found in plants of the families Lamiaceae and Boraginaceae and has many uses in the food, pharmaceutical and cosmetics industries. RA is an electroactive species owing to the presence of the two catechol groups in its structure. Due to their inherent characteristics, such as sensitivity, selectivity, ease of operation and not too high costs, electrochemical methods of analysis are interesting tools for the assessment of redox-active compounds. Moreover, there is a good correlation between the redox potential of the analyte and its capability to donate electrons and, consequently, its antioxidant activity. Therefore, this paper presents a detailed overview of the electrochemical (bio)sensors and methods, in both stationary and dynamic systems, applied for RA investigation under different aspects. These comprise its antioxidant activity, its interaction with biological important molecules and the quantification of RA or total polyphenolic content in different samples.

scholarly journals Determination of the antioxidant activity of Limoniastrum feei aqueous extract by chemical and electrochemical methods

2016 ◽  
Vol 2 (1) ◽  
pp. 1186141 ◽  
Author(s):  
Fatah Keffous ◽  
Nasser Belboukhari ◽  
Khaled Sekkoum ◽  
Houria Djeradi ◽  
Abdelkrim Cheriti ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Aqueous Extract ◽  
Electrochemical Methods

Probing the antioxidant activity of Δ9-tetrahydrocannabinol and cannabidiol in Cannabis sativa extracts

The Analyst ◽  
2019 ◽  
Vol 144 (16) ◽  
pp. 4952-4961 ◽  
Author(s):  
Ana Carolina Mendes Hacke ◽  
Dhésmon Lima ◽  
Fernanda de Costa ◽  
Ketaki Deshmukh ◽  
Nan Li ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Cannabis Sativa ◽  
Antioxidant Activities ◽  
Electrochemical Methods

A good correlation was obtained between the antioxidant activities of Cannabis sativa samples determined by spectrophotometric and electrochemical methods.

scholarly journals THE STUDY OF BEER QUALITY WITH THE REDUCED TOXIC EFFECT

2017 ◽  
Vol 1 ◽  
pp. 35-43 ◽  
Author(s):  
Nataliya Penkina ◽  
Larisа Tatar ◽  
Victoria Kolesnyk ◽  
Tetiana Karbivnycha ◽  
Tetiana Letuta
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Pinus Sylvestris ◽  
Toxic Effect ◽  
Pathological Condition ◽  
Antioxidant Properties ◽  
Quality Parameters ◽  
Raw Material ◽  
Biological Objects ◽  
The One

There was grounded the expedience of using unconventional vegetable raw material, namely Pinus sylvestris needle that partially replaced hop for beer enrichment. The optimal parameters of extraction of Pinus sylvestris needle relative to anti-oxidant activity of extract: hydromodulus 1:20, temperature 60 ºС, extraction 30 min. The needle extract has pure smell, harmonic refreshing taste with needle note. The content of ascorbic acid in extraction is 0,275 mg / 100 g, antioxidant activity – 202,3 C/100 g. The quantitative ratio of hop and pine needle in beer receipt was determined by the way of mathematical modeling. Quantitative content of Pinus sylvestris needle is no more than 20 % by mass from the rated norm of hop that is enough for preserving hop bitterness and smell. The receipt of beer, including Pinus sylvestris needle, was elaborated. The quality parameters of ready drink were studied. The addition of needle increases the beer gustatory properties, decreases methanol content. The content of ascorbic acid in ready drink is 3,52 mg/100 g. Antioxidant activity of elaborated beer is 178,1 C/100 g that determines its high biological value. The influence of beer with needle extract on antioxidant system of organism of biological objects was assessed. Under conditions of acute pathological condition the beer with needle extract decreases oxidative influence of drink on brain of biological objects. The beer “Smaragd” decreases toxic effect on organism of living creature due to its antioxidant properties. The introduction of needle extract that includes vegetable antioxidants in beer is the one of the ways to increase antioxidant capacity of ready drink. It opens the prospect of studies, directed on elaboration of arrangements of stabilization of different sorts of beer. The studies may be introduced in production that has positive effect on ready product quality.

scholarly journals Study of mint extracts antioxidant activity by electrochemical methods

2011 ◽  
Vol 5 (1) ◽  
pp. 13-17 ◽  
Author(s):  
Natalia Sazhina ◽  
◽  
Vyacheslav Misin ◽  
Elena Korotkova ◽  
◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Electrochemical Methods

scholarly journals Electrochemical Methods for Evaluation of Antioxidant Properties of Propolis Extract Incorporated in Chitosan Nanoparticles

2021 ◽  
Vol 57 (4) ◽  
pp. 96-108
Author(s):  
Luminita Fritea ◽  
Paula Melania Pasca ◽  
Laurian Vlase ◽  
Ana-Maria Gheldiu ◽  
Liviu Moldovan ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
High Performance ◽  
Antioxidant Properties ◽  
Chitosan Nanoparticles ◽  
Differential Pulse ◽  
Electrochemical Methods ◽  
Propolis Extract ◽  
Vis Spectroscopy ◽  
Pulse Voltammetry ◽  
Nano Formulation

The main purpose of our study was to demonstrate the antioxidant properties of novel propolis nano-formulation, incorporated in spherical chitosan nanoparticles. The electrochemical methods (cyclic voltammetry and differential pulse voltammetry) were successfully applied to propolis extract and nanopropolis formulation, confirming that the content in phenolic acids and flavonoids is responsible for the antioxidant activity of propolis. The quantitative and qualitative results are also supported by high performance liquid chromatography (HPLC) and ultraviolet-visible (UV-Vis) spectroscopy.

Electrochemical Methods to Evaluate the Antioxidant Activity and Capacity of Foods: A Review

2021 ◽  
Author(s):  
Md Azizul Haque ◽  
Ksenia Morozova ◽  
Giovanna Ferrentino ◽  
Matteo Scampicchio
Keyword(s):  
Antioxidant Activity ◽  
Electrochemical Methods

Phenolic compounds and antioxidant activity of twelve grape cultivars measured by chemical and electrochemical methods

2018 ◽  
Vol 244 (11) ◽  
pp. 1933-1943 ◽  
Author(s):  
Justyna Samoticha ◽  
M. José Jara-Palacios ◽  
José Miguel Hernández-Hierro ◽  
Francisco J. Heredia ◽  
Aneta Wojdyło
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Electrochemical Methods ◽  
Grape Cultivars
Sign in / Sign up

Export Citation Format

Share Document