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Production, extraction and characterization of exopolysaccharides produced by the native Leuconostoc pseudomesenteroides R2 strain Anais da ABC (AABC)
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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Production of 5-hydroxy-7-methoxy-4-methylphthalide in a culture of Penicillium crustosum Anais da ABC (AABC)
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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The potential of compounds isolated from Xylaria spp. as antifungal agents against anthracnose BJM
Elias,Luciana M.; Fortkamp,Diana; Sartori,Sérgio B.; Ferreira,Marília C.; Gomes,Luiz H.; Azevedo,João L.; Montoya,Quimi V.; Rodrigues,André; Ferreira,Antonio G.; Lira,Simone P..
ABSTRACT Anthracnose is a crop disease usually caused by fungi in the genus Colletotrichum or Gloeosporium. These are considered one of the main pathogens, causing significant economic losses, such as in peppers and guarana. The current forms of control include the use of resistant cultivars, sanitary pruning and fungicides. However, even with the use of some methods of controlling these cultures, the crops are not free of anthracnose. Additionally, excessive application of fungicides increases the resistance of pathogens to agrochemicals and cause harm to human health and the environment. In order to find natural antifungal agents against guarana anthracnose, endophytic fungi were isolated from Amazon guarana. The compounds piliformic acid and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 2-Hexylidene-3-methylbutanedioic acid; Amazon; Anthracnose; Plant pathogen.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000400840
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