Chemical constituents and antioxidative activity of the extracts from Dyera costulata leaves
Chloroform and n-butanol extracts from the leaves of Dyera costulata exhibited EC50 values for DPPH radical scavenging activity of 79.8±0.2 and 12.0±0.1 μg/ml, respectively. Chemical investigation of the extracts was conducted by means of column chromatography. β-Amyrin and rhamnazin were isolated f...
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| Format: | Article |
| Language: | English |
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Prince of Songkla University
2003-05-01
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| Series: | Songklanakarin Journal of Science and Technology (SJST) |
| Subjects: | |
| Online Access: | http://www.sjst.psu.ac.th/journal/25-3-pdf/08antioxidativeleaves.pdf |
| _version_ | 1811235514277167104 |
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| author | Apai Malinee Bamrung Jankeaw Sanan Subhadhirasakul |
| author_facet | Apai Malinee Bamrung Jankeaw Sanan Subhadhirasakul |
| author_sort | Apai Malinee |
| collection | DOAJ |
| description | Chloroform and n-butanol extracts from the leaves of Dyera costulata exhibited EC50 values for DPPH radical scavenging activity of 79.8±0.2 and 12.0±0.1 μg/ml, respectively. Chemical investigation of the extracts was conducted by means of column chromatography. β-Amyrin and rhamnazin were isolated from the chloroform extract and quercetin-3-O-α-L-rhamnopyranoside was isolated from the n-butanol extract. The chemical structures of the isolated compounds were identified by comparison of their spectroscopic data with those reported in the literature. The EC50 value of quercetin-3-O-α-L-rhamnopyranoside in DPPH radical scavenging activity was 9.37±0.02 μM. Its antioxidative activity is therefore about 8 times higher than that of the well known antioxidant, BHT, which has an EC50 value of 80.78±0.01 μM. |
| first_indexed | 2024-04-12T11:53:15Z |
| format | Article |
| id | doaj.art-f430ef0fd8b84ed3919b762412885691 |
| institution | Directory Open Access Journal |
| issn | 0125-3395 |
| language | English |
| last_indexed | 2024-04-12T11:53:15Z |
| publishDate | 2003-05-01 |
| publisher | Prince of Songkla University |
| record_format | Article |
| series | Songklanakarin Journal of Science and Technology (SJST) |
| spelling | doaj.art-f430ef0fd8b84ed3919b7624128856912022-12-22T03:34:07ZengPrince of Songkla UniversitySongklanakarin Journal of Science and Technology (SJST)0125-33952003-05-01253351357Chemical constituents and antioxidative activity of the extracts from Dyera costulata leavesApai MalineeBamrung JankeawSanan SubhadhirasakulChloroform and n-butanol extracts from the leaves of Dyera costulata exhibited EC50 values for DPPH radical scavenging activity of 79.8±0.2 and 12.0±0.1 μg/ml, respectively. Chemical investigation of the extracts was conducted by means of column chromatography. β-Amyrin and rhamnazin were isolated from the chloroform extract and quercetin-3-O-α-L-rhamnopyranoside was isolated from the n-butanol extract. The chemical structures of the isolated compounds were identified by comparison of their spectroscopic data with those reported in the literature. The EC50 value of quercetin-3-O-α-L-rhamnopyranoside in DPPH radical scavenging activity was 9.37±0.02 μM. Its antioxidative activity is therefore about 8 times higher than that of the well known antioxidant, BHT, which has an EC50 value of 80.78±0.01 μM.http://www.sjst.psu.ac.th/journal/25-3-pdf/08antioxidativeleaves.pdfantioxidativeflavonequercetinrhamnazinDyera costulata |
| spellingShingle | Apai Malinee Bamrung Jankeaw Sanan Subhadhirasakul Chemical constituents and antioxidative activity of the extracts from Dyera costulata leaves Songklanakarin Journal of Science and Technology (SJST) antioxidative flavone quercetin rhamnazin Dyera costulata |
| title | Chemical constituents and antioxidative activity of the extracts from Dyera costulata leaves |
| title_full | Chemical constituents and antioxidative activity of the extracts from Dyera costulata leaves |
| title_fullStr | Chemical constituents and antioxidative activity of the extracts from Dyera costulata leaves |
| title_full_unstemmed | Chemical constituents and antioxidative activity of the extracts from Dyera costulata leaves |
| title_short | Chemical constituents and antioxidative activity of the extracts from Dyera costulata leaves |
| title_sort | chemical constituents and antioxidative activity of the extracts from dyera costulata leaves |
| topic | antioxidative flavone quercetin rhamnazin Dyera costulata |
| url | http://www.sjst.psu.ac.th/journal/25-3-pdf/08antioxidativeleaves.pdf |
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