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| Costa,Túlio de Orleans Gadelha; Almeida,Richardson Alves de; Koolen,Hector Henrique Ferreira; Silva,Felipe Moura Araujo da; Pinto,Angelo Cunha. |
| Protium é um gênero que se destaca na família Burceraceae, compreende cerca de 146 espécies, das quais um pequeno número tem sido estudada do ponto de vista fitoquímico. Neste trabalho, foram isolados os terpenoides α- e β-amirina, os esteroides campesterol, estigmasterol e sitosterol e a cumarina escopoletina, a partir do tronco de Protium hebetatuml. As estruturas destas substâncias foram identificadas por RMN, MS, IV e por comparação com dados espectrais obtidos naa literatura e com amostras autênticas. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Protium; Α-amyrin; Β-amyrin; Campesterol; Stigmasterol; Sitosterol; Scopoletin. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672012000400014 |
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| Silva,Isabel Cristina Vieira da; Oliveira,Pollyana Felix de; Barbosa,Gleyce Moreno; Wessjohann,Ludger A.; Cardozo-Filho,Lucio; Holandino,Carla; Muzitano,Michelle Frazão; Leal,Ivana Correa Ramos. |
| Cancer is one of the most prevalent diseases worldwide and the natural products could be a source of bioactive compounds. Passiflora mucronata (PM) belongs to a very known vegetal genus, although, there are no studies about cytotoxic activity or isolated compounds. Different extracts from PM were obtained by liquid-liquid partition (P), Soxhlet (Sox) and supercritical fluid (SFE1-5) extraction techniques, being compared concerning their yields, chemical profile and cytotoxicity. The Sox extracts showed the highest yields (6.03%: hexane; 2.51%: dichloromethane) followed by SFE (from 4.34 to 1.63%) and partitions (1.06 and 2.26%). The hexane partition (HP) showed the best cytotoxic activity against K562 cell line (IC50 = 18.72 µg.mL-1). From HP, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apoptosis; Cytotoxic; Passiflora mucronata; Stigmasterol; Triterpenes. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100510 |
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| Chamorro,Soledad; Xavier,Claudia Regina; Hernández,Victor; Becerra,José; Vidal,Gladys. |
| Kraft mill effluent, due to its organic matter content and acute toxicity, must be treated. A primary treatment followed by a secondary treatment is the most common system. Aerated lagoon is also considered an effective biological treatment, although this technology has some drawbacks related with operation parameters and land extension space. Moreover, the recovery efficiency for micropollutants contained in kraft mill effluent is questioned due to the anoxic zone in the system. The goal of this work is to evaluate the performance of the aerated lagoon to remove stigmasterol contained in kraft mill effluents. Kraft mill effluent was treated by an aerated lagoon (AL), which was operated with three different stigmasterol load rates (SLR = 0.2, 0.6 and 1.1... |
| Tipo: Journal article |
Palavras-chave: Aerated lagoon; Kraft mill effluent; Stigmasterol. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000200001 |
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