Significance of DPPH free radical scavenging activity
DPPH free radical scavenging activity is a method used to assess the antioxidant capacity of various extracts by measuring their ability to reduce DPPH radicals, a stable free radical. This technique evaluates the effectiveness of antioxidants in neutralizing these radicals, providing insight into their potential health benefits. The method is often compared to ascorbic acid and is valuable for studying the antioxidant properties of different substances, including plant extracts, thus indicating their overall antioxidant potential.
Synonyms: Antioxidant activity, Radical scavenging activity, Dpph assay, Free radical inhibition
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The concept of DPPH free radical scavenging activity in scientific sources
DPPH free radical scavenging activity is a method to assess the antioxidant potential of extracts, measuring their ability to reduce stable DPPH radicals through in vitro assays. This evaluates the antioxidant capacity of various substances.
From: International Journal of Pharmacology
(1) This activity was compared with BHT and Adiantum pedatum L. n-hexane extract showed its greatest efficacy.[1] (2) DPPH free radical scavenging activity is a measure of how effectively a substance can neutralize DPPH, a stable free radical.[2] (3) DPPH free radical scavenging activity is a measure of antioxidant capacity, assessed for extracts of the aquatic fern Marsilea quadrifolia Linn.[3]
From: Sustainability Journal (MDPI)
(1) The higher the amplitude and the longer the duration of the ultrasound treatment, the higher the antioxidant activity, expressed both as the FRAP or "DPPH free radical scavenging activity", as the maximum values for the antioxidant activity were found when an ultrasonic amplitude of 90% was applied for 5 min (sample SM 90/5).[4]