Sequential injection analysis with electrochemical detection as a tool for economic and rapid evaluation of total antioxidant capacity

Chaneam, Sumonmarn; Teerasong, Saowapak; Damwan, K.; Nacapricha, Duangjai; Chaisuksant, Rasamee

doi:10.1016/j.talanta.2011.02.043

Cited by 18 publications

(12 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…HPLC-TEAC provides an efficient and rapid method for separation and identification of bioactive compounds from the source material (Gong, Plander, Xu, Simandi, & Gao, 2011;Raudonis, Bumblauskiene, Jakstas, Pukalskas, & Janulis, 2010). Better sensitivity and precision of TEAC assay can be achieved when coupled with other detection techniques, such as amperometric (Chan-Eam, Teerasong, Damwan, Nacapricha, & Chaisuksant, 2011;Milardovic et al, 2007) and FTIR (Cerretani et al, 2010), among others. Many of these modified TEAC assays employ online enzymatic generation of ABTS •+ , especially those using continuous flow systems.…”

Section: Trolox Equivalent Antioxidant Capacity (Teac) Assaymentioning

confidence: 99%

Measurement of antioxidant activity

Shahidi

Zhong²

2015

Journal of Functional Foods

886

589

View full text Add to dashboard Cite

Available online A B S T R A C TAntioxidants play an important role in food preservation by inhibiting oxidation processes and contributing to health promotion rendered by many dietary supplements, nutraceuticals and functional food ingredients. Antioxidant activity can be monitored by a variety of assays with different mechanisms, including hydrogen atom transfer (HAT), single electron transfer (ET), reducing power, and metal chelation, among others. Understanding the principle mechanisms, advantages and limitations of the measurement assays is important for proper selection of method(s) for valid evaluation of antioxidant potential in desired applications.This contribution provides a general and up-to-date overview of methods available for measuring antioxidant activity and the chemistry behind them.

show abstract

Section: Trolox Equivalent Antioxidant Capacity (Teac) Assaymentioning

confidence: 99%

Measurement of antioxidant activity

Shahidi

Zhong²

2015

Journal of Functional Foods

886

589

View full text Add to dashboard Cite

show abstract

“…The method relied on the decrease of the cathodic current of ABTS •+ at a glassy carbon electrode in phosphate buffer, pH = 7.0, after reaction with antioxidants in the sample. The total antioxidant capacity ranged between 0.326 ± 0.025 and 1.201 ± 0.023 mg gallic acid equivalents/g sample [231]. …”

Section: Significant Analytical Applications To Plant and Plant Exmentioning

confidence: 99%

Antioxidant Capacity Determination in Plants and Plant‐Derived Products: A Review

Pisoschi

Cîmpeanu

et al. 2016

Oxidative Medicine and Cellular Longevity

215

149

View full text Add to dashboard Cite

The present paper aims at reviewing and commenting on the analytical methods applied to antioxidant and antioxidant capacity assessment in plant-derived products. Aspects related to oxidative stress, reactive oxidative species' influence on key biomolecules, and antioxidant benefits and modalities of action are discussed. Also, the oxidant-antioxidant balance is critically discussed. The conventional and nonconventional extraction procedures applied prior to analysis are also presented, as the extraction step is of pivotal importance for isolation and concentration of the compound(s) of interest before analysis. Then, the chromatographic, spectrometric, and electrochemical methods for antioxidant and antioxidant capacity determination in plant-derived products are detailed with respect to their principles, characteristics, and specific applications. Peculiarities related to the matrix characteristics and other factors influencing the method's performances are discussed. Health benefits of plants and derived products are described, as indicated in the original source. Finally, critical and conclusive aspects are given when it comes to the choice of a particular extraction procedure and detection method, which should consider the nature of the sample, prevalent antioxidant/antioxidant class, and the mechanism underlying each technique. Advantages and disadvantages are discussed for each method.

show abstract

“…In all cases, the assays require more or less complex protocols involving an extraction step. In order to simplify TAP estimation and avoid the use of chemicals, different methods have been proposed such as an ultralow-cost telemetric system for rapid electrochemical detection of ascorbic in orange juice and fruits [14,15], excitation-emission fluorescence matrices [16], amperometric detection [17][18][19] and other electrochemical methods.…”

Section: Introductionmentioning

confidence: 99%