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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Estudo fitoquÃmico e avaliaÃÃo farmacolÃgica de Curcuma longa L. (zingiberaceae). / Phytochemical study and pharmacological evaluation of Curcuma longa L. (Zingiberaceae)

Tiago Augusto MagalhÃes de Matos 29 January 2015 (has links)
A espÃcie Curcuma longa L., conhecida como aÃafrÃo-da-terra tem apresentado vÃrias atividades farmacolÃgicas significativas e duas variedades das espÃcies sÃo conhecidas, vermelha e branca. Nenhum estudo quÃmico tem sido registrado para a variedade branca. Esse trabalho objetivou o estudo dos extratos obtidos mediante duas metodologias e do Ãleo essencial de rizomas Curcuma longa L., variedades vermelha e branca, objetivando verificar a variabilidade quÃmica entre as duas variedades, bem como a avaliaÃÃo das atividades farmacolÃgicas da espÃcie. O teor de lipÃdios, umidade e polifenÃis foram determinados e a composiÃÃo quÃmica dos Ãleos fixos e essenciais. O Ãleo fixo obtido a partir da cÃrcuma vermelha mostrou-se rico em Ãcido araquidÃnico e o de cÃrcuma branca em Ãcido linolÃico. Os resultados obtidos de teor de lipÃdios, umidade e polifenÃis foram considerados significativos para os rizomas estudados. Os Ãleos essenciais de cÃrcuma vermelha e branca tiveram como constituinte majoritÃrio a ar-turmerona e o eucaliptol, respectivamente. Estes resultados diferenciam quimicamente as duas variedades de Curcuma longa. Para as duas metodologias empregadas verificou-se significativo potencial antioxidante. Os resultados farmacolÃgicos indicaram grande potencial citotÃxico, acetilcolinesterÃsico e larvicida, sendo uma fonte promissora de agentes naturais. / The specie Curcuma longa L., known as saffron-the-ground has shown several shown significant pharmacological activities and two varieties of these species are known, red and white. No chemical research has been registered for a white variety. This work aimed to study the extracts obtained through two different methodologies and essential oil of Curcuma longa L. rhizomes of red and white varieties, aiming to verify the chemical variability between two varieties, as well as the evaluation of the pharmacological activities of the species. The lipids, humidity and polyphenols content were obtained and also the chemical composition of essential and fixed oils. The fixed oil obtained from the red turmeric proved rich in arachidonic acid and turmeric white in linoleic acid. The content of lipids results, humidity and polyphenols were considered significant to rhizomes studied. The essential oils of red and white turmeric had major are ar-turmerone and eucalyptol, respectively. These results differentiate chemically the both varieties of Curcuma longa. For the two methodologies studied, there was a significant antioxidant potential. The pharmacological results indicated a large cytotoxic, acetylcholinesterase and larvicide potential, being a promising source of natural agents.

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