Ultrasound assisted extraction of selected edible macroalgae: Effect on antioxidant activity and quantitative assessment of polyphenols by liquid chromatography with tandem mass spectrometry (LC-MS/MS)

Abstract Despite vast coastline and huge cultivation of macroalgae in India, bioactive compounds in the edible macroalgae have not been well characterized. Ultrasound assisted extraction and conventional extraction techniques were compared & characterized by extracting three edible macroalgae, viz., Sargassum wightii, Ulva rigida and Gracilaria edulis in methanol. Ultrasound assisted extract (120 min) of S. wightii showed significantly higher (p