4 documents found, page 1 of 1
Azadirachta indica A. Juss (neem) phenolic extract inhibits human B-lymphoblast...
Santos, Klebson Silva; Costa, Carla; Bessa, Maria João; Teixeira, João Paulo; Muniz, Ana Veruska Cruz da Silva; Padilha, Francine FerreiraAim: As far as is known, the pharmaceutical effects of neem on human B-lymphoblastoid (TK6) cells have not been studied until now. Hence, the present study aimed to obtain neem phenolic extracts for inhibits the proliferation of TK6 cells and explore some possible underlying mechanisms involved in these effects. Methods: Hexane extract (HE) was obtained in the first step. After that, the residual hexane was rem...
Surface crystallization of ionic liquid crystals
Martins, Mónia A.R.; Carvalho, Pedro J.; Alves, Douglas; Dariva, Cláudio; Costa, Mariana C.; Ferreira, Rute A.S.; André, Paulo S.; Morgado, PedroThe evidence for surface crystallization in ionic liquids is scarce. The existing reports seem to be contradictory as for its driving forces, since in the two compounds investigated in the literature, the contribution of coloumbic and van der Waals forces is very different. In this work 1-dodecyl-3- methylimidazolium tetrafluoroborate was studied and its surface crystallization characterized by surface tension,...
Antiproliferative activity of neem leaf extracts obtained by a sequential press...
Santos, Klebson S.; Barbosa, Andriele M.; Freitas, Victor; Muniz, Ana Veruska C.S.; Mendonça, Marcelo C.; Calhelha, Ricardo C.; Ferreira, Isabel C.F.R.Azadirachta indica A. Juss (neem) extracts have been used in pharmaceutical applications as antitumor agents, due to their terpenes and phenolic compounds. To obtain extracts from neem leaves with potential antiproliferative effect, a sequential process of pressurized liquid extraction was carried out in a fixed bed extractor at 25◦C and 100 bar, using hexane (SH), ethyl acetate (SEA), and ethanol (SE)assolvents...
Extração supercritica de compostos volateis do carvão mineral utilizando solven...
Dariva, CláudioDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnologico; A extração supercrítica dos compostos voláteis de um carvão mineral da mina de Butiá-RS foi investigado empregando solventes doadores de hidrogênio (álcoois). Um planejamento fatorial de experimentos foi utilizado para avaliar os efeitos de temperatura, pressão e adição de co-solvente (água) sobre o rendimento e características...