Journal article
Evaluation of antioxidant, antibacterial and anti-tyrosinase activities of four Macaranga species
Food Chemistry, Vol.114(2), pp.594-599
2009
Abstract
The methanolic fresh leaf extracts of Macaranga gigantea, Macaranga pruinosa, Macaranga tanarius and Macaranga triloba were screened for their antioxidant properties (AOP), tyrosinase inhibition and antibacterial activities. Total phenolic content (TPC), 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging, ferric-ion reducing power (FRAP), ferrous-ion chelating (FIC) and lipid peroxidation inhibition (LPI) activities were used to evaluate the AOP. Modified 3,4-dihydroxy-L-phenylalanine (L-DOPA) method was used to determine tyrosinase inhibition activity, whereas antibacterial activity was determined using the disc-diffusion technique. TPC screening of the same species from different collection sites showed no significant difference between sites. M. triloba showed the highest ascorbic acid equivalent antioxidant activity (AEAC), FRAP and LPI values. M. tanarius, which showed the lowest TPC, AEAC, FRAP and LPI activities, exhibited the best FIC activity. M. pruinosa showed the best tyrosinase inhibition activity, whereas M. triloba showed the best antibacterial activity against Gram-positive bacteria species, with minimal inhibition dosage (MID) values as low as 10 μg/disc. © 2008 Elsevier Ltd. All rights reserved.
Details
- Title
- Evaluation of antioxidant, antibacterial and anti-tyrosinase activities of four Macaranga species
- Authors
- T Y Lim (Author) - Monash University Malaysia, MalaysiaY Y Lim (Author) - Monash University Malaysia, MalaysiaCatherine M Yule (Author) - Monash University Malaysia, Malaysia
- Publication details
- Food Chemistry, Vol.114(2), pp.594-599
- Publisher
- Elsevier BV
- DOI
- 10.1016/j.foodchem.2008.09.093
- ISSN
- 0308-8146
- Organisation Unit
- School of Science, Technology and Engineering; School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99450899002621
- Output Type
- Journal article
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- Chemistry, Applied
- Food Science & Technology
- Nutrition & Dietetics
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Source: InCites