02296nas a2200265 4500008004100000245010900041210006900150260001700219300001200236490000600248520154000254653001701794653000901811653000901820653001501829653001501844653001401859100001801873700001401891700001501905700001401920700001801934700001501952856006301967 2021 eng d00aInfluence of Sonication on the Phenolic Content and Antioxidant activity of Terminalia catappa L. leaves0 aInfluence of Sonication on the Phenolic Content and Antioxidant  cJanuary 2011 a368-3730 v23 a

Aim: This study was designed to evaluate the phenolic content and antioxidant activity of ethanolic extracts from T. catappa leaves obtained by different intervals of sonication. Methods: Three commonly used methods were followed to evaluate phenolic content and four in vitro methods like 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) radical scavenging assay, ferric reducing antioxidant potency (FRAP), and total antioxidant capacity assays for measuring the antioxidant activities. Antioxidant values of these assays were expressed in terms of milligrams vitamin C equivalent (VCE) antioxidant activities. Results: This study showed that extract obtained with 40 minutes of sonication possessed significant (P < 0.05) polyphenolic contents compared to 20 and 60 minutes sonication and control (24 hour maceration). Moreover, sonication of T. catappa leaf above 40 minutes was found to be unsuitable for extracting out phenolic contents. Even the results of antioxidant assays showed that 40 minutes of the sonicated extract exhibited significant (P < 0.05) VCE values compared to extracts obtained at different intervals of sonication and control. Conclusions: In sonication extraction method 40 minutes is an ideal time to obtain extract enriched with high polyphenolic content with good antioxidant activity from T. catappa leaves.

10aAntioxidants10aDPPH10aFRAP10aSonication10aT. catappa10aVitamin C1 aAnnegowda, HV1 aAnwar, LN1 aMordix, MN1 aMordi, MN1 aRamanathan, S1 aMansor, SM uhttps://phcogres.com/article/2021/2/6/1041030974-849075457