Citation
Vimala Subramaniam, . and Mohd. Ilham Adenan, . and Abdull Rashih A., . (2000) Antioxidant activity in some selected products and medicinal plants. [Proceedings Paper]
Abstract
The methanolic crude extracts 0.25 mg/ml of ten antioxidant products available in the Malaysian market and 20 Malaysian medicinal plants were tested for free radical scavenging activity using the xanthine/xanthine oxidase superoxide scavenging assay. Among the tested products three exhibited high superoxide scavenging activity 81.9 per cent 75.8 per cent 74.2 per cent one exhibited moderate scavenging activity 62.8 per cent while seven others had low or no activity 0-50 per cent. Among the medicinal plants tested eight species exhibited high superoxide scavenging activity 89.2 per cent - 100.0 per cent four exhibited moderate scavenging activity 53.8 per cent - 69.7 per cent and eight others had low activity less than 50 per cent. The antioxidant products that possessed superoxide scavenging activity were found to have high dosages of vitamin A 1500 mg/tablet vitamin C 500 mg/tablet and selenium 250 mg/ml. It was also found that some of the Malaysian medicinal plants had similar to or higher superoxide scavenging activity than these antioxidant products at the tested concentration.
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Abstract
The methanolic crude extracts 0.25 mg/ml of ten antioxidant products available in the Malaysian market and 20 Malaysian medicinal plants were tested for free radical scavenging activity using the xanthine/xanthine oxidase superoxide scavenging assay. Among the tested products three exhibited high superoxide scavenging activity 81.9 per cent 75.8 per cent 74.2 per cent one exhibited moderate scavenging activity 62.8 per cent while seven others had low or no activity 0-50 per cent. Among the medicinal plants tested eight species exhibited high superoxide scavenging activity 89.2 per cent - 100.0 per cent four exhibited moderate scavenging activity 53.8 per cent - 69.7 per cent and eight others had low activity less than 50 per cent. The antioxidant products that possessed superoxide scavenging activity were found to have high dosages of vitamin A 1500 mg/tablet vitamin C 500 mg/tablet and selenium 250 mg/ml. It was also found that some of the Malaysian medicinal plants had similar to or higher superoxide scavenging activity than these antioxidant products at the tested concentration.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| AGROVOC Term: | DRUG PLANTS |
| AGROVOC Term: | HERBACEOUS PLANTS |
| AGROVOC Term: | TRADITIONAL MEDICINES |
| AGROVOC Term: | ANTIOXIDANTS |
| AGROVOC Term: | PLANT EXTRACTS |
| AGROVOC Term: | RETINOL |
| AGROVOC Term: | ASCORBIC ACID |
| AGROVOC Term: | SELENIUM |
| AGROVOC Term: | DOMESTIC MARKETS |
| AGROVOC Term: | MALAYSIA |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:27 |
| URI: | http://webagris.upm.edu.my/id/eprint/15886 |
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