Evaluation of the Radical Scavenging Activity of Resorcinarenes by DPPH• Free Radical Assay

Bishnoi, Anjali; Chawla, Har Mohindra; Pant, Nalin; Mrig, Sarika; Kumar, Satish

doi:10.3184/030823410x12796983145491

Cited by 4 publications

(1 citation statement)

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“…Antioxidants can protect against the harmful effects of free radicals in the body and prevent the oxidation of fats and other food components [25]. The widely documented 1,1-diphenyl-2-pyrylhydrazyl (DPPH) radical was used to assess antioxidant activity, because it is a stable free radical that can accept electrons or hydrogen radicals to form stable chemicals [26].…”

Section: Determination Of Antioxidant Activity Of Plant Extractsmentioning

confidence: 99%

DES Based Efficient Extraction Method for Bioactive Coumarins from Angelica dahurica (Hoffm.) Benth. & Hook.f. ex Franch. & Sav.

Wang

2021

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In this study, a simple and environmentally friendly method was developed for the extraction of seven active coumarins from Angelica dahurica (Hoffm.) Benth. & Hook.f. ex Franch. & Sav.(A. dahurica) based on deep eutectic solvents (DESs). Among the 16 kinds of DES based on choline chloride, the DES system with the molar ratio of choline chloride, citric acid, and water as 1:1:2 had the best extraction effect. Ultrasonic-assisted response surface methodology (RSM) was used to investigate the optimal extraction scheme. The results showed that the optimal extraction conditions were a liquid–solid ratio of 10:1 (mL/g), an extraction time of 50 min, an extraction temperature of 59.85 °C, and a moisture content of 49.28%. Under these conditions, the extraction yield reached 1.18%. In addition, scanning electron microscopy (SEM) was used to observe the degree of powder fragmentation before and after extraction with different solvents. The cells of A. dahurica medicinal materials obtained by DES ultrasonic-assisted treatment were the most seriously broken, indicating that DES had the highest efficiency in the treatment of A. dahurica. The 1,1-diphenyl-2-picrylhydrazyl (DPPH) DPPH radical scavenging model was used to evaluate the biological activity of DES extract. The results showed that DES extract had better scavenging ability of DPPH free radical. Therefore, DES is a green solvent suitable for extracting coumarin compounds of A. dahurica, with great potential to replace organic solvents.

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Section: Determination Of Antioxidant Activity Of Plant Extractsmentioning

confidence: 99%