Separation and purification of chemical compounds

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Unformatted text preview: CEAE) Norfaizah Osman, Khalijah Awang, A. Hamid A. Hadi and Mat Ropi Mukhtar Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia E-mail: faizah05@gmail.com Neonauclea sp-1 locally known as “bangkal” which is belongs to Rubiaceae Family. It is widely distributed at Sabah, Sarawak and Peninular Malaysia, Malaysia and Sulawesi, Indonesia. Samples of Neonauclea sp-1 was collected at Reserve Forest Sg. Tekam, Jerantut, Pahang. A phytochemical study on the leaves of Neonauclea sp-1 has been carried out by using n-hexane, dichoromethane and methanol to extract the alkaloids crude. Dichloromethane crude extract produced three indole alkaloids, i.e harmane, naucledine and cadamine. The isolation and purification of the compounds were achieved by using column chromatography and PTLC te chniques. The structural elucidation was performed by spectroscopic methods such as NMR, LCMS, IR and UV. NAT-P17 ANTIOXIDANT ACTIVITIES OF FOUR VARIETIES OF FICUS DELTOIDEA D Syazwani, SA Sharipah Ruzaina, A Rohaya, and MZ Mazatulikhma Department of Chemistry, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Malaysia E-mail: wanizolin@yahoo.com Ficus deltoidea or locally known as ‘Mas Cotek’ is a very common herb found throughout the tropics is available in many varieties. In Malaysia, traditional practitioners use this plant in herbal remedies to treat several illnesses like headache, hypertension, and hyperglycemia which may be related to antioxidant properties of the plant. The objective of the study was to evaluate anti oxidant properties of aqueous extracts of four varieties of Ficus deltoidea namely var angustifolia, deltoidea, intermedia, and kunstleri in order to identify which variety possess the highest antioxidant potential. In this study, the antioxidant of aqueous extract of the leaves and fruits of the four varieties of Ficus deltoidea were evaluated by their DPPH radical scavenging activity. In addition, total phenolic content (TPC) of th...
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This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.

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