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| Romero,M. Cristina; Reinoso,Enso Hugo; Moreno Kiernan,Alejandro; Urrutia,M. Inés. |
| Environmental biotechnology has developed as an offshoot from sanitary engineering, and only recently the biological component of the ecosystems had been recognized as relevant when bioremediation strategies must be chosen to solve environmental problems. Yeasts were isolated on 2,4-dichlorobiphenyl, 2,3',4- and 2,4',5-trichlorobiphenyl, poorly soluble compounds in water, as carbon sources. Debaryomyces castelli, Debaryomyces maramus and Dipodascus aggregatus composed the mixed culture and represented 72% of the isolates; their degradation potential were studied in biphasic and monophasic systems. The biphasic cultures were obtained with phenol as the organic phase and MSM as the aqueous ones, the monophasic medium only with MSM. Both cultures were... |
| Tipo: Journal article |
Palavras-chave: Biphasic system; Fungal adaptation; Increased solubilities; Transformation rates; Yeasts communities. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000300013 |
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| Romero,M. Cristina; Reinoso,Enso H.; Urrutia,M. Inés; Moreno Kiernan,Alejandro. |
| At present, it is common to observe environments with organic and inorganic pollution, defined as co-contamination. Most industrial and urban effluents releases both pollutant types, leading to a complex environmental problem, as the biota must be tolerant to both xenobiotics. T. helicus, an efficient strain to degrade biphenyl, was trained with high copper levels, and became co tolerant to cobalt, lead and cadmium when was cultured in their presence. The copper adaptation was the result of physiological mechanisms, and the activated biochemical processes conferred resistance to Cu2+ as well as to other heavy metals. Furthermore, the Cu2+ adaptation of the mycelium was also transferred to the spores, that removed twice as much copper from solution than... |
| Tipo: Journal article |
Palavras-chave: Biodegradation; Biphenyl; Cocontaminated sites; Cotolerance; Metal sorption; Talaromyces helicus. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000300009 |
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