RT info:eu-repo/semantics/article
T1 Paper mill effluent decolorization by fifty Streptomyces strains.
A1 Hernández Cutuli, Manuel Pascual
A1 Rodríguez Bullido, Juana
A1 Soliveri de Carranza, Juan
A1 Copa Patiño, José Luis
A1 Pérez Leblic, María Isabel
A1 Arias Fernández, María Enriqueta Juana
K1 article
K1 bacterial growth
K1 coloreffluent toxicity
K1 fractionation
K1 paper industry
K1 ph measurement
K1 reaction analysis
K1 strain difference
K1 streptomycesthin layer chromatography
K1 Biología y Biomedicina/Biología
K1 Biology
AB Fifty actinomycete strains isolated from lignocellulosic substrates were examined for the ability to remove the color from a paper mill effluent obtained after semichemical alkaline pulping of wheat straw. Streptomyces sp. strains UAH 15, UAH 23, UAH 30, and UAH 51 were selected for their ability to decolorize the effluent in a liquid medium containing 1% (wt/vol) glycerol, 0.2% (wt/vol) ammonium sulfate, and 80% (vol/vol) effluent. The highest levels of decolorization achieved after the strains grew were 60 to 65%. Strains UAH 30 and UAH 51 were selected for further study because of their different patterns of effluent decolorization during growth. Fractionation of the decolorized effluent by gel permeation chromatography demonstrated that there were reductions in the levels of absorbance of the high- and medium- molecular-weight compounds. These fractions were mainly responsible for the color of the effluent, while the last fractions, the low-molecular-weight compounds, could have been responsible for the residual color of the decolorized effluent. Thin-layer chromatography revealed significant differences among the patterns of bands corresponding to the acidified supernatants obtained after precipitation of alkali-lignin from the effluent samples decolorized by different Streptomyces strains.
SN 0099-2240
YR 1994
FD 1994
LK http://hdl.handle.net/10017/37006
UL http://hdl.handle.net/10017/37006
LA eng
DS MINDS@UW
RD 25-abr-2024