Extraction of condensed tannin in cocoa powder by using different ratio of solvent (acetone:water) / Siti Hawa Khairudin
Condensed Tannin (CT) is a water-soluble phenolic compound. CT also known as Proanthocyanidins (PAs) are oligomers and polymers of flavan-3-ol units. This compound comprise from a group of polyhydroxyflavan-3-ol oligomers and polymers linked by carbon-carbon bond between flavanol subunit. The functi...
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| Format: | Student Project |
| Language: | English |
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Faculty of Applied Sciences
2009
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| Online Access: | https://ir.uitm.edu.my/id/eprint/22983/ |
| _version_ | 1848805633671823360 |
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| author | Khairudin, Siti Hawa |
| author_facet | Khairudin, Siti Hawa |
| author_sort | Khairudin, Siti Hawa |
| building | UiTM Institutional Repository |
| collection | Online Access |
| description | Condensed Tannin (CT) is a water-soluble phenolic compound. CT also known as Proanthocyanidins (PAs) are oligomers and polymers of flavan-3-ol units. This compound comprise from a group of polyhydroxyflavan-3-ol oligomers and polymers linked by carbon-carbon bond between flavanol subunit. The function of CT in foods is as astringency. CT also are able to interact with biological systems or physiological effects, such as antioxidant, anti-allergy, anti-hypertensive, as well as antimicrobial activities. There is a limit of condensed tannin in human body which is not exceeding than 6% of human body weight. If do so, it will cause an anemia and precipitation in body when CT interact with enzyme and iron in body. For this study, acid-butanol method was used for analysis before determining the condensed tannin by using UV/VIS spectrophotometry instrument. For the extraction, two ratio of acetone was used for immersing the cocoa powder for 2 days. The ratio of solvent use is 70% and 80%. There have 3 samples labelled as sample A, sample B and sample C as shown in Appendix E was used for comparison. As results, sample A give the higher amount of CT followed by sample B and sample C. for the comparison of solvent ratio, 70% acetone give the higher extraction of CT compared with 80% acetone. |
| first_indexed | 2025-11-14T22:14:08Z |
| format | Student Project |
| id | uitm-22983 |
| institution | Universiti Teknologi MARA |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T22:14:08Z |
| publishDate | 2009 |
| publisher | Faculty of Applied Sciences |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uitm-229832019-02-01T02:46:09Z https://ir.uitm.edu.my/id/eprint/22983/ Extraction of condensed tannin in cocoa powder by using different ratio of solvent (acetone:water) / Siti Hawa Khairudin Khairudin, Siti Hawa Extraction (Chemistry) Botanical chemistry. Phytochemicals Cacao. Chocolate. Cocoa. Cocoa processing Condensed Tannin (CT) is a water-soluble phenolic compound. CT also known as Proanthocyanidins (PAs) are oligomers and polymers of flavan-3-ol units. This compound comprise from a group of polyhydroxyflavan-3-ol oligomers and polymers linked by carbon-carbon bond between flavanol subunit. The function of CT in foods is as astringency. CT also are able to interact with biological systems or physiological effects, such as antioxidant, anti-allergy, anti-hypertensive, as well as antimicrobial activities. There is a limit of condensed tannin in human body which is not exceeding than 6% of human body weight. If do so, it will cause an anemia and precipitation in body when CT interact with enzyme and iron in body. For this study, acid-butanol method was used for analysis before determining the condensed tannin by using UV/VIS spectrophotometry instrument. For the extraction, two ratio of acetone was used for immersing the cocoa powder for 2 days. The ratio of solvent use is 70% and 80%. There have 3 samples labelled as sample A, sample B and sample C as shown in Appendix E was used for comparison. As results, sample A give the higher amount of CT followed by sample B and sample C. for the comparison of solvent ratio, 70% acetone give the higher extraction of CT compared with 80% acetone. Faculty of Applied Sciences 2009 Student Project NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/22983/1/PPb_SITI%20HAWA%20KHAIRUDIN%20AS%2009_5.pdf Khairudin, Siti Hawa (2009) Extraction of condensed tannin in cocoa powder by using different ratio of solvent (acetone:water) / Siti Hawa Khairudin. (2009) [Student Project] <http://terminalib.uitm.edu.my/22983.pdf> (Unpublished) |
| spellingShingle | Extraction (Chemistry) Botanical chemistry. Phytochemicals Cacao. Chocolate. Cocoa. Cocoa processing Khairudin, Siti Hawa Extraction of condensed tannin in cocoa powder by using different ratio of solvent (acetone:water) / Siti Hawa Khairudin |
| title | Extraction of condensed tannin in cocoa powder by using different ratio of solvent (acetone:water) / Siti Hawa Khairudin |
| title_full | Extraction of condensed tannin in cocoa powder by using different ratio of solvent (acetone:water) / Siti Hawa Khairudin |
| title_fullStr | Extraction of condensed tannin in cocoa powder by using different ratio of solvent (acetone:water) / Siti Hawa Khairudin |
| title_full_unstemmed | Extraction of condensed tannin in cocoa powder by using different ratio of solvent (acetone:water) / Siti Hawa Khairudin |
| title_short | Extraction of condensed tannin in cocoa powder by using different ratio of solvent (acetone:water) / Siti Hawa Khairudin |
| title_sort | extraction of condensed tannin in cocoa powder by using different ratio of solvent (acetone:water) / siti hawa khairudin |
| topic | Extraction (Chemistry) Botanical chemistry. Phytochemicals Cacao. Chocolate. Cocoa. Cocoa processing |
| url | https://ir.uitm.edu.my/id/eprint/22983/ |