Phytochemical profile of orthosiphon aristatus samples prepared by acetone precipitation
Background: Orthosiphon aristatus is a popular medicinal herb because of its pharmacological significance. Therefore, a lot of products formulated from the plant extract are available in the market. However, many phytochemicals in the plant extract are still remained to be unknown. Objective: The ob...
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my.utm.983732022-12-11T03:37:29Z http://eprints.utm.my/id/eprint/98373/ Phytochemical profile of orthosiphon aristatus samples prepared by acetone precipitation Chua, Lee Suan Q Science (General) TP Chemical technology Background: Orthosiphon aristatus is a popular medicinal herb because of its pharmacological significance. Therefore, a lot of products formulated from the plant extract are available in the market. However, many phytochemicals in the plant extract are still remained to be unknown. Objective: The objective of this study was to profile phytochemicals from the plant extracts prepared using water and ethanol in a reflux system for comparison. Method: The commonly used analytical techniques of acetone precipitation (gravimetry) and vanillin assay (colorimetry) were used to estimate total saponin in the plant extracts. The low dielectric constant of acetone (20.7) was used to precipitate saponins. The phytochemicals in the plant extracts and their respective precipitates were then identified by LC-MS/MS. Results: Higher amount of precipitate was formed from ethanol extract than water extract. The results of LC-MS/MS revealed that not only saponins, but other phytochemicals, such as phenolic acids, flavonoids, terpenoids and aliphatic acids were also detected in the precipitates. In particular, ethanol extract and its precipitate were found to have higher flavonoids. Acetone precipitation could significantly increase the content of sagerinic acid and rosmarinic acid, as well as polyhydroxylated and polymethoxylated flavones from the water extract. Conclusion: Acetone precipitation is not specific for saponin, but also any phytochemicals which have lower solubility due to the lack of hydrogen bonding in high dipole moment medium of acetone. Gravimetric acetone precipitation had successfully profiled the phytochemicals in both highly complex water and ethanol based crude extracts. Bentham Science Publishers 2020-06-17 Article PeerReviewed Chua, Lee Suan (2020) Phytochemical profile of orthosiphon aristatus samples prepared by acetone precipitation. The Natural Products Journal, 11 (4). pp. 532-536. ISSN 2210-3155 http://dx.doi.org/10.2174/2210315510999200617111955 DOI:10.2174/2210315510999200617111955 |
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Q Science (General) TP Chemical technology Chua, Lee Suan Phytochemical profile of orthosiphon aristatus samples prepared by acetone precipitation |
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Background: Orthosiphon aristatus is a popular medicinal herb because of its pharmacological significance. Therefore, a lot of products formulated from the plant extract are available in the market. However, many phytochemicals in the plant extract are still remained to be unknown. Objective: The objective of this study was to profile phytochemicals from the plant extracts prepared using water and ethanol in a reflux system for comparison. Method: The commonly used analytical techniques of acetone precipitation (gravimetry) and vanillin assay (colorimetry) were used to estimate total saponin in the plant extracts. The low dielectric constant of acetone (20.7) was used to precipitate saponins. The phytochemicals in the plant extracts and their respective precipitates were then identified by LC-MS/MS. Results: Higher amount of precipitate was formed from ethanol extract than water extract. The results of LC-MS/MS revealed that not only saponins, but other phytochemicals, such as phenolic acids, flavonoids, terpenoids and aliphatic acids were also detected in the precipitates. In particular, ethanol extract and its precipitate were found to have higher flavonoids. Acetone precipitation could significantly increase the content of sagerinic acid and rosmarinic acid, as well as polyhydroxylated and polymethoxylated flavones from the water extract. Conclusion: Acetone precipitation is not specific for saponin, but also any phytochemicals which have lower solubility due to the lack of hydrogen bonding in high dipole moment medium of acetone. Gravimetric acetone precipitation had successfully profiled the phytochemicals in both highly complex water and ethanol based crude extracts. |
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Chua, Lee Suan |
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Chua, Lee Suan |
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Chua, Lee Suan |
title |
Phytochemical profile of orthosiphon aristatus samples prepared by acetone precipitation |
title_short |
Phytochemical profile of orthosiphon aristatus samples prepared by acetone precipitation |
title_full |
Phytochemical profile of orthosiphon aristatus samples prepared by acetone precipitation |
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Phytochemical profile of orthosiphon aristatus samples prepared by acetone precipitation |
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Phytochemical profile of orthosiphon aristatus samples prepared by acetone precipitation |
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phytochemical profile of orthosiphon aristatus samples prepared by acetone precipitation |
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Bentham Science Publishers |
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2020 |
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http://eprints.utm.my/id/eprint/98373/ http://dx.doi.org/10.2174/2210315510999200617111955 |
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