AN OVERVIEW OF ADVANCED 2,2-Diphenyl-1-picrylhydrazyl (DPPH) ANALYSIS TECHNIQUES
DOI:
https://doi.org/10.21580/wjc.v8i2.26028Keywords:
antioxidant analysis, DPPH Assay, analytical techniquesAbstract
Antioxidants play a crucial role in preventing oxidative damage, necessitating reliable analytical
techniques for their evaluation. Oxidative stress, resulting from an imbalance between free radicals
and antioxidants in the body, has been associated with various chronic diseases, including cancer,
cardiovascular disorders, and neurodegenerative conditions. Therefore, accurately assessing
antioxidant activity is essential for developing health-related products and validating their efficacy.
This study reviewed and compared various analytical methods used to determine antioxidant
activity, emphasizing their advantages, limitations, and applicability across different sample types.
Traditional spectrophotometric assays, such as the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method,
remain widely used because of their simplicity and cost-effectiveness, although they often suffer
from matrix interferences. Advanced techniques, including gas chromatography–mass
spectrometry (GC–MS), high-performance liquid chromatography coupled with DPPH (HPLC
DPPH), electrochemical methods, microfluidic systems, and miniaturized paper-based assays,
provide improved sensitivity, accuracy, and efficiency. These methods enable a more comprehensive
assessment of antioxidant activity by offering deeper insights into reaction mechanisms and
compound interactions. The integration of multiple analytical approaches can further enhance
antioxidant characterization, supporting applications in the food, pharmaceutical, and biomedical
industries. This review highlights the importance of selecting appropriate analytical techniques
based on research objectives and sample characteristics, while also outlining future directions for
advancing antioxidant detection methodologies.
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