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Phenol content, antioxidant and tyrosinase inhibitory activity of mangrove plants in Micronesia
Asian Pacific Journal of Tropical Medicine ; (12): 531-535, 2014.
Article in English | WPRIM | ID: wpr-820687
ABSTRACT
OBJECTIVE@#To find out and compare the in vitro antioxidant and tyrosinase inhibitory activities of two species of mangrove plants.@*METHODS@#Mangrove samples were harvested at the shoreline on the island of Weno, Chuuk State in Micronesia. The phenol content, antioxidant activity (based on DPPH-free radical scavenging) and tyrosinase inhibitory activity in different tissues (leaves, barks and roots) of Rhizophora stylosa (R. stylosa) and Sonneratia alba (S. alba), collected from the island of Weno.@*RESULTS@#Total phenol content ranged from 4.87 to 11.96 mg per g of freeze dried samples. The highest antioxidant activity was observed in R. stylosa bark (85.5%). The highest tyrosinase inhibitory activity was found in S. alba bark. Also, total phenol content and antioxidant activity were higher in methanol extracts than in aqueous extracts.@*CONCLUSIONS@#Taken together, the results of this study proved that mangroves can be excellent sources of antioxidant compounds.
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Phenols / Picrates / Biphenyl Compounds / Plant Extracts / Chemistry / Monophenol Monooxygenase / Lythraceae / Rhizophoraceae / Enzyme Inhibitors / Metabolism Language: English Journal: Asian Pacific Journal of Tropical Medicine Year: 2014 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Phenols / Picrates / Biphenyl Compounds / Plant Extracts / Chemistry / Monophenol Monooxygenase / Lythraceae / Rhizophoraceae / Enzyme Inhibitors / Metabolism Language: English Journal: Asian Pacific Journal of Tropical Medicine Year: 2014 Type: Article