An ultrasound-based technique for the analytical extraction of phenolic compounds in red algae

Antioxidant Activity of Aqueous and Ethanolic Extracts of Coconut (Cocos nucifera) Fruit By-Products

“…Ultrasounds have been applied to improve the extraction of several different kinds of both vegetables and fruits [35]. Some of the most interesting compounds extracted using ultrasound-assisted extraction are powerful antioxidant compounds [36] including simple flavonols from onion [37], anthocyanins from blackcurrant [38], stilbenes from grape canes, and simple phenolics from red algae [39]. Ultrasound-assisted extraction has proved to be more efficient than the conventional extraction methods [40,41] and with similar or even better recovery rates than other green extraction techniques [42,43].…”

Elucidation and quantification health-promoting phenolic compounds, antioxidant properties and sugar levels of ultrasound assisted extraction, aroma compositions and amino acids profiles of macroalgae, Laurencia papillosa

“…During extraction type and process, nonphenolic compounds (vitamin C and minerals) and other reductive polar compounds (such as soluble polysaccharides, amino acids and peptides) may be released along with polyphenols which may be detected and quantified. This can reduce the effect of the Folin-Ciocalteu reagent due to response of radical scavenging could be affected by those molecules [3] , [9] , [11] .…”

“…Novel cold extraction technology, such as ultrasound assisted extraction (UAE), have minimal impact on the stability of bioactive compounds, have significant potential to minimise the utilization of hazardous solvents, boost efficiency, reduction of time, least expensive and improve quality and yield of bioactive compounds [10] . Effective extraction of phytochemical components as penetrate complicated tough cell wall in seaweed is facilitated by ultrasound technology, which can be employed pre-treatment or in combination with solvent to rupture cell membranes for enhanced extractability [11] , [12] . Recently, some researchers reported that UAE is preferable for recovering bioactive compounds from seaweeds because it allows for extraction to occur at atmospheric pressure and not need the temperature.…”

Multivariate Analysis Revealed Ultrasonic-Assisted Extraction Improves Anti-Melanoma Activity of Non-Flavonoid Compounds in Indonesian Brown Algae Ethanol Extract

“…It requires less solvent extraction compared to cold maceration [ 17 , 18 ]. Moreover several other studies have also shown that UAE also results in higher recovery yields of algae metabolites, such as algal lipids [ 19 ], algae phenolic compounds [ 20 ], and algae carotenoids [ 21 ]. It has also been shown to result in 6–35% more of polyphenolic compounds being produced compared to traditional methods [ 22 , 23 ].…”