Antioxidant activity in different parts of roselle (Hibiscus sabdariffa L.) extracts and potential exploitation of the seeds.
The calyx of the roselle plant has long been recognised as a source of antioxidants. The objective of this study was to evaluate antioxidant activity, free radical-scavenging and total phenolic content in other parts of the roselle plant. Roselle seed extracts were found to have the highest antioxid...
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| Format: | Article |
| Language: | English |
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Elsevier Science Limited
2010
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| Online Access: | http://psasir.upm.edu.my/id/eprint/13180/ http://psasir.upm.edu.my/id/eprint/13180/1/Antioxidant%20activity%20in%20different%20parts%20of%20roselle.pdf |
| _version_ | 1848842041609420800 |
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| author | Mohd Esa, Norhaizan Fong, Shin Hern Ismail, Amin Chew, Lye Yee |
| author_facet | Mohd Esa, Norhaizan Fong, Shin Hern Ismail, Amin Chew, Lye Yee |
| author_sort | Mohd Esa, Norhaizan |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The calyx of the roselle plant has long been recognised as a source of antioxidants. The objective of this study was to evaluate antioxidant activity, free radical-scavenging and total phenolic content in other parts of the roselle plant. Roselle seed extracts were found to have the highest antioxidant activity and strongest radical-scavenging activity of all plants tested. Methanol extracts showed a positive correlation between phenolic content and antioxidant activity, as measured by β-carotene bleaching assay and DPPH radical-scavenging activity. The antioxidant efficacy of roselle seeds in a whole food system was investigated by testing the effect on lipid oxidation in cooked beef patties stored at 4 °C for 14 days. Results showed that patties treated with roselle seeds had reduced lipid oxidation compared to patties treated with BHT. This study suggests that roselle seeds have the potential to be used as food antioxidants. |
| first_indexed | 2025-11-15T07:52:50Z |
| format | Article |
| id | upm-13180 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:52:50Z |
| publishDate | 2010 |
| publisher | Elsevier Science Limited |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-131802015-10-20T07:44:16Z http://psasir.upm.edu.my/id/eprint/13180/ Antioxidant activity in different parts of roselle (Hibiscus sabdariffa L.) extracts and potential exploitation of the seeds. Mohd Esa, Norhaizan Fong, Shin Hern Ismail, Amin Chew, Lye Yee The calyx of the roselle plant has long been recognised as a source of antioxidants. The objective of this study was to evaluate antioxidant activity, free radical-scavenging and total phenolic content in other parts of the roselle plant. Roselle seed extracts were found to have the highest antioxidant activity and strongest radical-scavenging activity of all plants tested. Methanol extracts showed a positive correlation between phenolic content and antioxidant activity, as measured by β-carotene bleaching assay and DPPH radical-scavenging activity. The antioxidant efficacy of roselle seeds in a whole food system was investigated by testing the effect on lipid oxidation in cooked beef patties stored at 4 °C for 14 days. Results showed that patties treated with roselle seeds had reduced lipid oxidation compared to patties treated with BHT. This study suggests that roselle seeds have the potential to be used as food antioxidants. Elsevier Science Limited 2010-10-15 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/13180/1/Antioxidant%20activity%20in%20different%20parts%20of%20roselle.pdf Mohd Esa, Norhaizan and Fong, Shin Hern and Ismail, Amin and Chew, Lye Yee (2010) Antioxidant activity in different parts of roselle (Hibiscus sabdariffa L.) extracts and potential exploitation of the seeds. Food Chemistry, 122 (4). pp. 1055-1060. ISSN 0308-8146; ESSN: 1873-7072 10.1016/j.foodchem.2010.03.074 |
| spellingShingle | Mohd Esa, Norhaizan Fong, Shin Hern Ismail, Amin Chew, Lye Yee Antioxidant activity in different parts of roselle (Hibiscus sabdariffa L.) extracts and potential exploitation of the seeds. |
| title | Antioxidant activity in different parts of roselle (Hibiscus sabdariffa L.) extracts and potential exploitation of the seeds. |
| title_full | Antioxidant activity in different parts of roselle (Hibiscus sabdariffa L.) extracts and potential exploitation of the seeds. |
| title_fullStr | Antioxidant activity in different parts of roselle (Hibiscus sabdariffa L.) extracts and potential exploitation of the seeds. |
| title_full_unstemmed | Antioxidant activity in different parts of roselle (Hibiscus sabdariffa L.) extracts and potential exploitation of the seeds. |
| title_short | Antioxidant activity in different parts of roselle (Hibiscus sabdariffa L.) extracts and potential exploitation of the seeds. |
| title_sort | antioxidant activity in different parts of roselle (hibiscus sabdariffa l.) extracts and potential exploitation of the seeds. |
| url | http://psasir.upm.edu.my/id/eprint/13180/ http://psasir.upm.edu.my/id/eprint/13180/ http://psasir.upm.edu.my/id/eprint/13180/1/Antioxidant%20activity%20in%20different%20parts%20of%20roselle.pdf |