Possible enhancement of antioxidative activities in medicinal in herbal plant through nitrogen fertilization.
An experiment was designed to characterize the relationship among gluthatione (OSH) production, oxidized gluthatione (OSSG), total flavonoid, anthocyanin, ascorbic acid and antioxidant activities (FRAP, DPPH) in three varieties of Labjsja pumila Blume (var. alata,pumila, lanceolata) under four ni...
| Main Authors: | , |
|---|---|
| Format: | Conference or Workshop Item |
| Language: | English Malay |
| Online Access: | http://psasir.upm.edu.my/id/eprint/26719/ http://psasir.upm.edu.my/id/eprint/26719/1/ID%2026719.pdf |
| _version_ | 1848845652570669056 |
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| author | Jaafar, Hawa ZE Ibrahim, Mohd Hafiz |
| author_facet | Jaafar, Hawa ZE Ibrahim, Mohd Hafiz |
| author_sort | Jaafar, Hawa ZE |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | An experiment was designed to characterize the relationship among gluthatione (OSH) production,
oxidized gluthatione (OSSG), total flavonoid, anthocyanin, ascorbic acid and antioxidant activities
(FRAP, DPPH) in three varieties of Labjsja pumila Blume (var. alata,pumila, lanceolata) under
four nitrogen fertilization levels (0, 90, 180,270 kg N/ha). Nitrogen (N) fertilization imposed acute
impact on the production of GSH and GSSG, anthocyanin, total flavonoid and ascorbic acid that
increased steadily with decreasing N level from 270 to 0 kg N/ha. Neither varietal nor its interaction
with N level being observed. At the highest N level, L. pumila exhibited significantly lower antioxidant
activities than those exposed to limited N-growing condition. Significant positive correlations were
obtained among antioxidant activities, total flavonoid, GSH, GSSG, anthocyanin and ascorbic acid
suggesting an increase in antioxidative activities in L. pumila under low N fertilization could be
attributed to high contents of these compounds. It could also be concluded that the quality of L.
pumila could be enhanced with manipulation of N fertilization, and that excessive N application should be avoided to ensure high herbal quality. |
| first_indexed | 2025-11-15T08:50:13Z |
| format | Conference or Workshop Item |
| id | upm-26719 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English Malay |
| last_indexed | 2025-11-15T08:50:13Z |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-267192014-08-28T04:54:17Z http://psasir.upm.edu.my/id/eprint/26719/ Possible enhancement of antioxidative activities in medicinal in herbal plant through nitrogen fertilization. Jaafar, Hawa ZE Ibrahim, Mohd Hafiz An experiment was designed to characterize the relationship among gluthatione (OSH) production, oxidized gluthatione (OSSG), total flavonoid, anthocyanin, ascorbic acid and antioxidant activities (FRAP, DPPH) in three varieties of Labjsja pumila Blume (var. alata,pumila, lanceolata) under four nitrogen fertilization levels (0, 90, 180,270 kg N/ha). Nitrogen (N) fertilization imposed acute impact on the production of GSH and GSSG, anthocyanin, total flavonoid and ascorbic acid that increased steadily with decreasing N level from 270 to 0 kg N/ha. Neither varietal nor its interaction with N level being observed. At the highest N level, L. pumila exhibited significantly lower antioxidant activities than those exposed to limited N-growing condition. Significant positive correlations were obtained among antioxidant activities, total flavonoid, GSH, GSSG, anthocyanin and ascorbic acid suggesting an increase in antioxidative activities in L. pumila under low N fertilization could be attributed to high contents of these compounds. It could also be concluded that the quality of L. pumila could be enhanced with manipulation of N fertilization, and that excessive N application should be avoided to ensure high herbal quality. Conference or Workshop Item NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/26719/1/ID%2026719.pdf Jaafar, Hawa ZE and Ibrahim, Mohd Hafiz Possible enhancement of antioxidative activities in medicinal in herbal plant through nitrogen fertilization. In: BIT's 1st Annual World Congress of SQ Foods-2012, 1-3 Nov 2012, Shenzhen, China. . Malay |
| spellingShingle | Jaafar, Hawa ZE Ibrahim, Mohd Hafiz Possible enhancement of antioxidative activities in medicinal in herbal plant through nitrogen fertilization. |
| title | Possible enhancement of antioxidative activities in medicinal in herbal plant through nitrogen fertilization. |
| title_full | Possible enhancement of antioxidative activities in medicinal in herbal plant through nitrogen fertilization. |
| title_fullStr | Possible enhancement of antioxidative activities in medicinal in herbal plant through nitrogen fertilization. |
| title_full_unstemmed | Possible enhancement of antioxidative activities in medicinal in herbal plant through nitrogen fertilization. |
| title_short | Possible enhancement of antioxidative activities in medicinal in herbal plant through nitrogen fertilization. |
| title_sort | possible enhancement of antioxidative activities in medicinal in herbal plant through nitrogen fertilization. |
| url | http://psasir.upm.edu.my/id/eprint/26719/ http://psasir.upm.edu.my/id/eprint/26719/1/ID%2026719.pdf |