Abstract
Three processes were used for the extraction of total phenol and total flavonoid contents of Anacardium occidentale L. and to determine its antioxidant activity. Whatever the extraction process was, the total flavonoid and total phenol contents were of the same order. With the microwave-assisted extraction (MAE), 666.07 mg gallic acid equivalent (GAE)/100 g dry matter (DM) of total phenol content was obtained from the stem barks, 601.71 mg/100 g DM from the leaves and 69.18 mg quercetin equivalent (QE)/100 g DM from the nuts of cashew. With Soxhlet extraction, 605.47 mg GAE/100 g DM of total phenol content was obtained from the stem barks, 600.38 mg GAE/100 g DM from the leaves, 609.13 mg GAE/100 g DM from the nuts of cashew, then 67.13 mg QE/100 g DM of the total flavonoid content was obtained from the stem barks, 65.13 mg QE/100 g DM from the leaves and 61.75 mg QE/100 g DM from the nuts of cashew. Finally, with mechanical agitation, 608.52 mg GAE/100 g DM of total phenol content was obtained from the stem barks, 604.85 mg GAE/100 g DM from the leaves and 593.47 mg GAE/100 g DM from the nuts of cashew; 76.86 mg QE/100 g DM of total flavonoid content was obtained from the stem barks, 76.31 mg QE/100 g DM from the leaves and 70.39 mg QE/100 g DM from the nuts of cashew. The antioxidant tests revealed that MAE gave better anti-oxidant activity and more phenolic compounds. Key words: Processes of extraction, antioxidant activity, Anacardium occidentale, microwave-assisted extraction.
Highlights
Researchers have done studies on how to arrange and measure chlorophylls as well as its effect on plants
Three processes were used for the extraction of total phenol and total flavonoid contents of Anacardium occidentale L. and to determine its antioxidant activity
With the microwave-assisted extraction (MAE), 666.07 mg gallic acid equivalent (GAE)/100 g dry matter (DM) of total phenol content was obtained from the stem barks, 601.71 mg/100 g DM from the leaves and 69.18 mg quercetin equivalent (QE)/100 g DM from the nuts of cashew
Summary
Researchers have done studies on how to arrange and measure chlorophylls as well as its effect on plants. These studies show that plants are bioactive compounds. They explain what causes inhibition of root growth, as well as reduced water absorption; what causes the morphological, biochemical and physiological. Recent studies show that medicinal plants are an important source of new chemical substances with potential materials (Kravkaz et al, 2018)
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