Citation
Norhayati Y., . and Nurulhidayah A., . and Rini Zunnurni M J., . and Norliana A R., . and Norliana W., . and Mohd Ifwat I., . (2009) Antioxidative constituents of selected Malaysian ulam. [Proceedings Paper]
Abstract
Ten selected Malaysian ulam or salad were analyzed fora-tocopherol ascorbic acid and carotenoids as well as catalase ascorbate peroxidase and peroxidase specific activities. These included Sauropus androgynus cekur manis Piper sarmentosum kaduk Polygonum minus kesum Morinda citrifolia mengkudu;young shoots Centella asiatica pegaga Oenanthe javanica selom Manihot esculenta ubi kayu; young shoots Cosmos caudatus ulam raja Carica papaya betik; young shoots and Kaempferia galanga cekur. The antioxidant production varied between the selected plants. For the nonenzymatic antioxidants the highest production of alpha-tocopherol was observed in O. javanica and the lowest was in C. papaya shoots; P. sarmentosum exhibited significantly higher concentration of ascorbic acid and carotenoid and the least concentration was observed in C. asiatica and S. androgynus. Of all the ulam studied M. citrifolia produced the highest specific activity of ascorbate peroxidase and the lowest was observed in K. galangal. Catalase specific activity was 3D-fold higher in S. androgynus compared to other ulam while P. sarmentosum managed to produce the highest specific activity of peroxidase. The results revealed that enzymatic and non-enzymatic antioxidants had central and interrelated roles acting both chemically and as substrates in detoxification reaction of reactive oxygen species. The combined action of these antioxidants might provide a better protection against the development of chronic diseases.
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Abstract
Ten selected Malaysian ulam or salad were analyzed fora-tocopherol ascorbic acid and carotenoids as well as catalase ascorbate peroxidase and peroxidase specific activities. These included Sauropus androgynus cekur manis Piper sarmentosum kaduk Polygonum minus kesum Morinda citrifolia mengkudu;young shoots Centella asiatica pegaga Oenanthe javanica selom Manihot esculenta ubi kayu; young shoots Cosmos caudatus ulam raja Carica papaya betik; young shoots and Kaempferia galanga cekur. The antioxidant production varied between the selected plants. For the nonenzymatic antioxidants the highest production of alpha-tocopherol was observed in O. javanica and the lowest was in C. papaya shoots; P. sarmentosum exhibited significantly higher concentration of ascorbic acid and carotenoid and the least concentration was observed in C. asiatica and S. androgynus. Of all the ulam studied M. citrifolia produced the highest specific activity of ascorbate peroxidase and the lowest was observed in K. galangal. Catalase specific activity was 3D-fold higher in S. androgynus compared to other ulam while P. sarmentosum managed to produce the highest specific activity of peroxidase. The results revealed that enzymatic and non-enzymatic antioxidants had central and interrelated roles acting both chemically and as substrates in detoxification reaction of reactive oxygen species. The combined action of these antioxidants might provide a better protection against the development of chronic diseases.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. mal QK99 M3S471 2008 Call Number |
| AGROVOC Term: | ANTIOXIDANTS |
| AGROVOC Term: | ENZYME ACTIVITY |
| AGROVOC Term: | SALADS |
| AGROVOC Term: | ASCORBIC ACID |
| AGROVOC Term: | PHENOLIC COMPOUNDS |
| AGROVOC Term: | PROTEIN CONTENT |
| AGROVOC Term: | MALAYSIA |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:14 |
| URI: | http://webagris.upm.edu.my/id/eprint/11363 |
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