Plant vegetative stages and drying methods affect flavonoid content of Clinacanthus nutans extracts
Background: Clinacanthus nutans, also known as ‘Sabah snake grass’ or ‘Belalai gajah’, is a herb well known locally for its medicinal values. The primary chemical constituents of the leaves are schaftoside, vitexin, isovitexin, orientin and isoorientin, and antiviral activity is shown by two glycogl...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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African Ethnomedicines Network (Nigeria)
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/73534/ http://psasir.upm.edu.my/id/eprint/73534/1/Plant%20vegetative%20stages%20and%20drying%20methods%20affect%20flavonoid%20content%20of%20Clinacanthus%20nutans%20extracts.pdf |
| _version_ | 1848857295972204544 |
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| author | Mohamad, Munirah Ahmad, Siti Hajar Mohd Ghazali, Hasanah Tengku Muda Mohamed, Mahmud Ketaren, Bunga Raya Abdul Shukor, Nur Indah Tajidin, Nor Elliza |
| author_facet | Mohamad, Munirah Ahmad, Siti Hajar Mohd Ghazali, Hasanah Tengku Muda Mohamed, Mahmud Ketaren, Bunga Raya Abdul Shukor, Nur Indah Tajidin, Nor Elliza |
| author_sort | Mohamad, Munirah |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Background: Clinacanthus nutans, also known as ‘Sabah snake grass’ or ‘Belalai gajah’, is a herb well known locally for its medicinal values. The primary chemical constituents of the leaves are schaftoside, vitexin, isovitexin, orientin and isoorientin, and antiviral activity is shown by two glycoglycerolipids. Despite the importance of C. nutans, complete information with respect to commercial production and postharvest handling of the herb in the local herbal industry is still lacking. Thus, the objective of this study was to determine the optimum postharvest handling processes that could retain the phytochemicals quality of C. nutans. Materials and Methods: The flavonoid compounds of C. nutans were analysed by using ultra fast liquid chromatography (UFLC). Total phenolic content and antioxidant activity were determined using a spectrophotometer. Results: The total phenolic compounds and antioxidant activity in C. nutans were found to be higher in the young vegetative stage than in the mature vegetative stage. Flavonoid compounds (schaftoside, isovitexin, vitexin and orientin) were also found to be highest in the young vegetative plant compared to the mature vegetative plant. All of the assayed phytochemicals and flavonoid compounds levels were found to be highest in oven dried samples compared to the sun, air and solar dried samples. Conslusion: This study suggests that oven-drying young vegetative C. nutans plant material is the optimum method to retain postharvest quality. |
| first_indexed | 2025-11-15T11:55:17Z |
| format | Article |
| id | upm-73534 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:55:17Z |
| publishDate | 2018 |
| publisher | African Ethnomedicines Network (Nigeria) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-735342020-06-08T18:28:30Z http://psasir.upm.edu.my/id/eprint/73534/ Plant vegetative stages and drying methods affect flavonoid content of Clinacanthus nutans extracts Mohamad, Munirah Ahmad, Siti Hajar Mohd Ghazali, Hasanah Tengku Muda Mohamed, Mahmud Ketaren, Bunga Raya Abdul Shukor, Nur Indah Tajidin, Nor Elliza Background: Clinacanthus nutans, also known as ‘Sabah snake grass’ or ‘Belalai gajah’, is a herb well known locally for its medicinal values. The primary chemical constituents of the leaves are schaftoside, vitexin, isovitexin, orientin and isoorientin, and antiviral activity is shown by two glycoglycerolipids. Despite the importance of C. nutans, complete information with respect to commercial production and postharvest handling of the herb in the local herbal industry is still lacking. Thus, the objective of this study was to determine the optimum postharvest handling processes that could retain the phytochemicals quality of C. nutans. Materials and Methods: The flavonoid compounds of C. nutans were analysed by using ultra fast liquid chromatography (UFLC). Total phenolic content and antioxidant activity were determined using a spectrophotometer. Results: The total phenolic compounds and antioxidant activity in C. nutans were found to be higher in the young vegetative stage than in the mature vegetative stage. Flavonoid compounds (schaftoside, isovitexin, vitexin and orientin) were also found to be highest in the young vegetative plant compared to the mature vegetative plant. All of the assayed phytochemicals and flavonoid compounds levels were found to be highest in oven dried samples compared to the sun, air and solar dried samples. Conslusion: This study suggests that oven-drying young vegetative C. nutans plant material is the optimum method to retain postharvest quality. African Ethnomedicines Network (Nigeria) 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/73534/1/Plant%20vegetative%20stages%20and%20drying%20methods%20affect%20flavonoid%20content%20of%20Clinacanthus%20nutans%20extracts.pdf Mohamad, Munirah and Ahmad, Siti Hajar and Mohd Ghazali, Hasanah and Tengku Muda Mohamed, Mahmud and Ketaren, Bunga Raya and Abdul Shukor, Nur Indah and Tajidin, Nor Elliza (2018) Plant vegetative stages and drying methods affect flavonoid content of Clinacanthus nutans extracts. African Journal of Traditional, Complementary and Alternative Medicines, 15 (4). 54 - 63. ISSN 0189-6016; ESSN: 2505-0044 10.21010/ajtcam.v15i4.8 |
| spellingShingle | Mohamad, Munirah Ahmad, Siti Hajar Mohd Ghazali, Hasanah Tengku Muda Mohamed, Mahmud Ketaren, Bunga Raya Abdul Shukor, Nur Indah Tajidin, Nor Elliza Plant vegetative stages and drying methods affect flavonoid content of Clinacanthus nutans extracts |
| title | Plant vegetative stages and drying methods affect flavonoid content of Clinacanthus nutans extracts |
| title_full | Plant vegetative stages and drying methods affect flavonoid content of Clinacanthus nutans extracts |
| title_fullStr | Plant vegetative stages and drying methods affect flavonoid content of Clinacanthus nutans extracts |
| title_full_unstemmed | Plant vegetative stages and drying methods affect flavonoid content of Clinacanthus nutans extracts |
| title_short | Plant vegetative stages and drying methods affect flavonoid content of Clinacanthus nutans extracts |
| title_sort | plant vegetative stages and drying methods affect flavonoid content of clinacanthus nutans extracts |
| url | http://psasir.upm.edu.my/id/eprint/73534/ http://psasir.upm.edu.my/id/eprint/73534/ http://psasir.upm.edu.my/id/eprint/73534/1/Plant%20vegetative%20stages%20and%20drying%20methods%20affect%20flavonoid%20content%20of%20Clinacanthus%20nutans%20extracts.pdf |