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By S. Dhanarasu

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It was isolated from Tamus communis firstly. Lycopene can be extracted from tomato paste with MeOH-CH2Cl2 mixture after dehydration of tomato paste by MeOH. The extract was concentrated, and then crystallized twice from benzene by the addition of MeOH to obtain lycopene of 98 to 99% purity. Further purification can be achieved by column chromatography on calcium hydroxide (Ikan, 1997). CH3 H3C H3C CH3 CH3 H3 C CH3 CH3 CH3 CH3 lycopene Palm oil contains carotenoids. Palm oil mill effluent that is remaining part of the palm oil industry was extracted with hexane.

Medicinal uses of G. 000 years ago and is used to treat memory and cognitive impairment, for which it has moderate efficacy with minimal side effects. The ginkgo leaves contain many active ingredients, including flavonoids, terpene trilactones (Jacobs & Browner, 2000). Triterpene lactones namely ginkgolides and flavonoids are believed to be associated with pharmacological activities of G. biloba extracts. While flavonoids can be obtained from many other plants, ginkgolides are unique compounents of the G.

O O O OH O zedoarol O germacrone O O curzeone O O curdione β-elemene ar-turmerone β- turmerone 23 Column Chromatography for Terpenoids and Flavonoids Daucus carota L. (Umbelliferae) is widely distributed in the world. Fruits of the plant have been used commonly as a medicine for the treatment of ancylostomiasis, dropsy, chronic kidney diseases and bladder afflictions in Chinese medicine. Flavonoids, anthocyanins, chromones, coumarins as well as sesqiterpenoids have been isolated from the D. carota.

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