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Registros recuperados: 43 | |
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Rehman,Shazia; Aslam,Hina; Ahmad,Aqeel; Khan,Shakeel Ahmed; Sohail,Muhammad. |
Filamentous fungi are considered to be the most important group of microorganisms for the production of plant cell wall degrading enzymes (CWDE), in solid state fermentations. In this study, two fungal strains Aspergillus niger MS23 and Aspergillus terreus MS105 were screened for plant CWDE such as amylase, pectinase, xylanase and cellulases (β-glucosidase, endoglucanase and filterpaperase) using a novel substrate, Banana Peels (BP) for SSF process. This is the first study, to the best of our knowledge, to use BP as SSF substrate for plant CWDE production by co-culture of fungal strains. The titers of pectinase were significantly improved in co-culture compared to mono-culture. Furthermore, the enzyme preparations obtained from monoculture and co-culture... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solid state fermentation; Plant cell wall degrading enzymes (CWDE); Banana peels; Aspergillus strains; Enzymatic hydrolysis. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400045 |
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Rezende,Maria Inês; Barbosa,Aneli de Melo; Vasconcelos,Ana Flora Dalberto; Endo,Asae Sakurada. |
Sugarcane bagasse was used as substrate for xylanase production by means of a strain of Trichoderma harzianum Rifai isolated from decaying Aspidosperma sp. (peroba) wood. The bagasse was washed, dried, milled and wetted with minimal salts medium and the cultures grown at 28 ± 2ºC for 7 days. Two extraction methods were tested for enzyme recovery: (A) Tween 80, 0.1% (v/v), in physiological saline, and (B) 50mM sodium acetate buffer, pH 5.0, under agitation (180rpm) for 15, 30 and 60min. After a single extraction, both extraction methods recovered an average of 15U/ml of xylanase activity, independent on the time of shaking. A second and third extraction recovered 10.4 and 6.6U/ml xylanase, respectively. The effect of volume size for extraction, and... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trichoderma harzianum; Xylanase; Solid state fermentation; Sugarcane bagasse. |
Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000100014 |
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Santos,Tamires Carvalho dos; Cavalcanti,Ingrid Souza; Bonomo,Renata Cristina Ferreira; Santana,Nivio Batista; Franco,Marcelo. |
The present paper analyses the effects of water activity (0.88, 0.94 and 0.97) and of fermentation time (24, 48, 72, 96 and 120 hours) on the kinetic activity of enzymes cellulolytic, produced during the solid state fermentation of waste from the improvement of mango, with the aid of fungus species Aspergillus niger. Solid state fermentation was carried out at 35°C inside a bacteriological incubator. The statistical results indicated that the best activity for enzyme CMCase was 7.26U g-1 after 74.51 hours of fermentation, whereas for enzyme FPase was 2.55U g-1 after 98.52 hours, both presenting best results in approximately 0.928 of water activity. Pareto charts have showed that fermentation time has greater effect over the activity of enzyme CMCase, while... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus niger; Pareto charts; Solid state fermentation; Mangifera indica. L.. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011001200027 |
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Registros recuperados: 43 | |
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