Sung-Suk Suh1, Jinik Hwang1, Mirye Park1, Heung-Sik Park2, Taek-Kyun Lee3. 1. South Sea Environment Research Department, Korea Institute of Ocean Science and Technology, Geoje 656-830, Korea. 2. Korea South Pacific Ocean Research Center, Korea Institute of Ocean Science and Technology, Ansan, Gyeonggi-do 425-600, 425-600, Korea. 3. South Sea Environment Research Department, Korea Institute of Ocean Science and Technology, Geoje 656-830, Korea. Electronic address: tklee@kiost.ac.
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.
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.
Authors: Samaneh Zolghadri; Asieh Bahrami; Mahmud Tareq Hassan Khan; J Munoz-Munoz; F Garcia-Molina; F Garcia-Canovas; Ali Akbar Saboury Journal: J Enzyme Inhib Med Chem Date: 2019-12 Impact factor: 5.051