Submitted by Natalie Mendes (nataliermendes@gmail.com) on 2015-07-28T23:56:29Z No. of bitstreams: 1 Disserta??o_?ngara Keisle S?o Paulo Barretto Miranda.pdf: 984548 bytes, checksum: 4e0290fe54977157fb35593ccdb7ef99 (MD5) / Made available in DSpace on 2015-07-28T23:56:29Z (GMT). No. of bitstreams: 1 Disserta??o_?ngara Keisle S?o Paulo Barretto Miranda.pdf: 984548 bytes, checksum: 4e0290fe54977157fb35593ccdb7ef99 (MD5) Previous issue date: 2014-03-25 / Funda??o de Amparo ? Pesquisa do Estado da Bahia - FAPEB / Bromelain is an enzyme complex with great therapeutic importance attributed both to it?s proteolytic activity, as the non-proteolytic components in the extract. Thus, the enzyme was extracted from different parts of Ananas comosus var comosus, from two pineapple with different codes: BGA 771 and BGA 772. The proteolytic and specific activities of bromelain from each part (stem, crown, peel, pulp and leaves) were investigated as well as their kinetic characteristics by measuring the optimum temperature and the optimum pH, and finally was studied it?s effect in vitro on murine melanoma B16F10 cells. In BGA 771, the highest proteolytic activity was found in the stem (81.10 mg/mL/min), while the highest specific activity was found in the pulp and peel (1983.44 and 1822.33 UA/mg of bromelain, respectively). In general, the optimum temperature varied between of 50 to 80 ?C and pH between 6 and 8. Bromelain all parts were effective more than 50% in inhibiting the melanoma B16F10 cells proliferation after 48 hours. The most significant inhibition was find on crown bromelain with 72.86%, and a time-dependent effect was observed on crown bromelain. At BGA 772 the higher activity was find in the pulp (35.58 mg/mL/min and 1446.60 UA/mg bromelain). The optimum temperature in the extracts ranged between 40 and 90 ?C, while the pH 6 was the best for all parties, while the leaf bromelain had two great points: 6 and 8. Only the bromelain peel was able to inhibit the melanoma B16F10 proliferation of, being 66.37% after 48 hours of contact, and a dose-dependent activity was observed. / A bromelina ? um complexo enzim?tico de grande import?ncia terap?utica, atribu?da tanto ? sua atividade proteol?tica, como aos componentes n?o proteol?ticos contidos no extrato. Dessa forma, a enzima foi extra?da de diferentes partes de Ananas comosus var comosus, a partir de dois abacaxizeiros com identifica??es distintas: BGA 771 e BGA 772. Foram investigadas as atividades proteol?tica e espec?fica da bromelina de cada parte (caule, coroa, casca, polpa e folha), bem como suas caracter?sticas cin?ticas atrav?s da medida da temperatura e do pH ?timos, investigando-se, por fim, o seu efeito in vitro sobre c?lulas tumorais de melanoma murino B16F10. No BGA 771, a maior atividade proteol?tica foi encontrada no caule (81,10 ?g/mL/min), enquanto a maior atividade espec?fica foi encontrada na polpa e na casca (1983,44 e 1822,33 UA/mg de bromelina, respectivamente). De um modo geral, a temperatura ?tima variou entre as partes de 50 a 80 ?C e o pH ?timo entre 6 e 8. A bromelina de todas as partes foi eficaz em inibir a prolifera??o das c?lulas de melanoma B16F10 ap?s 48 horas em mais de 50%, sendo a da coroa a mais significativa, com 72,86% de inibi??o, tendo sido observada uma atividade tempo-dependente. No BGA 772, as maiores atividade foram encontradas na polpa (35,58 ?g/mL/min e 1446,60 UA/mg de bromelina). A temperatura ?tima nos extratos variou entre 40 e 90?C, enquanto o pH 6 foi o melhor para todas as partes, exceto para a folha que teve dois pontos ?timos: 6 e 8. Somente a bromelina da casca foi capaz de inibir a prolifera??o do melanoma B16F10, sendo de 66,37% ap?s 48 horas de contato, tendo sido observada uma atividade dose-dependente.