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| Valente,Angela M.M.P.; Ferreira,Antonio G.; Daolio,Cristina; Rodrigues Filho,Edson; Boffo,Elisangela F.; Souza,Antonia Q.L.; Sebastianes,Fernanda L.S.; Melo,Itamar S.. |
| The chemical reactions carried out by microorganisms have been used as a tool in modern chemistry. This paper reports the production of mycophenolic acid and a new phthalide by the endophytic fungus Penicillium crustosum obtained from coffee seeds. The fungus was cultivated in a liquid medium for a period of seven days and after that the culture medium was divided into four treatments: A, B, C and D, to which different organic substances were added. Treatment A was maintained as the control to evaluate the occurrence of biotransformation. Organic acids were added to the culture media of treatments B (ferulic and quinic acids) and C [cinnamic and 3,4-(methylenedioxy) cinnamic acids], and caffeine was added in the treatment D. All these organic compounds... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffee; Endophytic fungus; Mycophenolic acid; Penicillium crustosum; 5-hydroxy-7-methoxy-4-methylphthalide. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200487 |
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| Paulo,Elinalva M.; Boffo,Elisangela F.; Branco,Alexsandro; Valente,Ângela M.M.P.; Melo,Itamar S.; Ferreira,Antonio G.; Roque,Milton R.A.; Assis,Sandra A. de. |
| The genus Leuconostoc belongs to a group of lactic acid bacteria usually isolated from fermented vegetables, which includes species involved in the production of exopolysaccharides (EPS). These biopolymers possess considerable commercial potential. Because of the wide variety of industrial applications of EPS, this study aimed to produce and characterize the native exopolysaccharide strain Leuconostoc pseudomesenteroides R2, which was isolated from cabbage collected in a semi-arid region of Bahia. We employed the following conditions for the production of EPS: 10.7% sucrose, pH 8.2, without agitation and incubation at 28ºC for 30 hours. The fermentation broth was treated with ethanol and generated two types of polysaccharide substances (EPS I and EPS II).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leuconostoc pseudomesenteroides; Exopolysaccharide; Polymer; Dextran. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200018 |
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