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http://dx.doi.org/10.5352/JLS.2021.31.6.559

A Comparative Study on the Chemical Characteristics and Antioxidant Effects of Sea Mustards Sourced from Different Areas in Taejongdae  

Kim, Hojun (Korea Ocean Bio Cluster)
Jayapala, HPS (Division of Marine Bioscience, Korea Maritime & Ocean University)
Jo, Won Hee (Division of Marine Bioscience, Korea Maritime & Ocean University)
Nam, Hyung Sik (Division of Civil, Environmental Engineering and Logistics System, Korea Maritime & Ocean University)
Lim, Sun Young (Division of Marine Bioscience, Korea Maritime & Ocean University)
Publication Information
Journal of Life Science / v.31, no.6, 2021 , pp. 559-567 More about this Journal
Abstract
This study compared the nutritional characteristics and antioxidant effects of sea mustards sourced from five different areas (Barammaegi, Gultongmeori, Chanmulgae, Johongtaek, and Goraedeung) in Taejongdae, Youngdo, Busan. The contents of total flavonoids and phenols and fatty acid composition were measured. To evaluate their antioxidant effects, 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assays were used. Acetone/methylene chloride (A+M) extracts from all the sea mustards contained higher amounts of total flavonoids and phenols than methanol (MeOH) extracts. Among the sea mustards obtained from the different areas, the total flavonoid and total phenolic content of the A+M extract of the sea mustard from Gultongmeori was 1.44±0.04 mg/g and 1.72±0.06 mg/g, respectively. In terms of the fatty acid composition, the Gultongmeori sea mustard had higher percentages of total n-6, total n-3, eicosapentaenoic acid (EPA, 20:5n-3), and docosahexaenoic acid (DHA, 22:6n-3) than the sea mustards from the other areas. The A+M extract of the sea mustard from Gultongmeori was more effective in terms of scavenging free radicals as compared with that of the other sea mustards, as assessed by the DPPH and ABTS assays (p<0.05). In a 120-minute reactive oxygen species (ROS) production assay, all the extracts tested decreased cellular ROS production induced by H2O2 compared to that produced by exposure to an extract-free control (p<0.05). The extracts from Barammaegi and Gultongmeori had a greater inhibitory effect on cellular ROS production. These results indicated that the antioxidant effects of sea mustards might be associated with a higher amount of flavonoids and phenols. This study suggests that food-processed products from sea mustard can be developed as functional foods for promoting health in the local population.
Keywords
Antioxidant; flavonoids; phenols; reactive oxygen species; sea mustard;
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