Comparative Antioxidant Activity of Edible Japanese Brown Seaweeds

Abstract

Japanese edible brown seaweeds, Eisenia bicyclis (Arame), Kjellmaniella crassifolia (Gagome), Alaria crassifolia (Chigaiso), Sargassum horneri (Akamoku), and Cystoseira hakodatensis (Uganomoku) were assayed for total phenolic content (TPC), fucoxanthin content, radical scavenging activities (DPPH, peroxyl radical, ABTS, and nitric oxide), and antioxidant activity in a liposome system. Among the solvents used for extraction, methanol was the most effective to extract total phenolics (TPC) from brown seaweeds. Among 5 kinds of brown seaweeds analyzed, methanol extract from C. hakodatensis was the best source for antioxidants. The high antioxidant activity of the extract was based not only on the high content of phenolics, but on the presence of fucoxanthin. No significant correlation (P > 0.05) was observed between TPC per gram extract with DPPH radical scavenging activity of the methanol extracts. These observed discrepancy would be due to structural variations in the phenolic compounds, and different levels of fucoxanthin in the extracts. The present study also demonstrated the synergy in the antioxidant activity of the combination of brown seaweed phenolics and fucoxanthin.

Methanol extracts from Cystoseira tamariscifolia and Cystoseira nodicaulis are able to inhibit cholinesterases and protect a human dopaminergic cell line from hydrogen peroxide-induced cytotoxicity

“…Cystoseira tamariscifolia had a higher content of all the groups of phenolic compounds than C. nodicaulis. The TPC of the former species was also higher than those reported for other species of the Sargassaceae family, such as S. vulgare and S. muticum, and also than other Ochrophyta, as for example D. dichotoma and D. spiralis (Zubia et al 2009;Airanthi et al 2011). Biophenols are believed to shield the algal thallus against photodestruction caused by UV radiation, herbivores and pathogens (Abdala-Díaz et al 2006).…”

Controlling of Microbial Growth by Using Cystoseira barbata Extract

“…A number of bioactive compounds which have been isolate from marine algae include sulphate polysaccharides (laminarin and fucoidans), polyphenol (such as phlorotannins), carotenoid pigments (such as fucoxantin and astaxanthin), sterols and mycosporine-like amino acids (MAAs) (Airanthi et al, 2011 andAbuGhannam, 2011). Bromophenol has been reported as biofuntion of antimicrobial compounds was to found in the red marine algae (Oh et al, 2008).…”

Antioxidant Activity and Proximate Analysis of Dry Powder from Brown Seaweed Sargassum hystrix

“…Total phenolic content at concentration 1000 ppm was 114.26 mg GAE/g dry basis=11.43 g GAE/100 g dry basis. The result of total phenolic content of S. hystrix powder was higher than several kinds and species of else brown algae, likes S. muticum was 230.8±17.1 mg GAE/100 g dry basis (Farvin & Jacobsen, 2013), S. vulgare was 7.09 g GAE/100 g extract (Plaza et al, 2010), E. cava was 8.30 g GAE/100 g extract (Senevirathne et al, 2006), P. pavonica was 1.076±0.87 g GAE/100 g extract (Khaled et al, 2012), S. binderi was 0.03 g GAE/100 g extract (Boonchum et al, 2011), S. horneri was 2.08 g GAE/100 g extract (Airanthi et al, 2011), and T. conoides was 0.11 g GAE/100 g extract (Boonchum et al, 2011). But, total phenolic content of S. hystrix powder in this research was lower than total phenolic content of S. hystrix extract was about 49.46 g GAE/100 g dry extract (Pratiwi, 2013), S. polycystum was 59.30 g GAE/100 g extract (Lailatussifa et al, 2016), S. kjelmanianum was 16,3 g GAE/100 g extract and S. thunbergii was 11,5 g GAE/100 g extract (Luo et al, 2010).…”