caa a22 4500 465822703 CHVBK 20180323112140.0 cr unu---uuuuu 170327e19901001xx s 000 0 eng 10.1007/BF00170934 doi (NATIONALLICENCE)springer-10.1007/BF00170934 Role of melanin in fungal biosorption of tributyltin chloride [Elektronische Daten] [G. Gadd, D. Gray, P. Newby] Summary: Intact biomass of an albino and a melanic strain of Aureobacidium pullulans, as well as purified melanin from the latter strain, was capable of tributyltin chloride (TBTC) removal from solution. Melanized biomass had a greater biosorptive capacity than albino biomass, this difference being attributable to the presence of melanin. Purified melanin had a large capacity for TBTC biosorption, the calculated maximum uptake capacity, q e, being approximately 35 mmol (g dry wt)−1. TBTC biosorption by intact biomass and melanin obeyed the Langmuir adsorption isotherm over the concentration range used, and was relatively unaffected by external pH between pH 3.5 and 6.5: an approximate 20% decrease in TBTC biosorption resulted at external pH 2.5. A TBTC concentration of 0.3 μM in growth medium resulted in a lag period which was longer with the albino strain (approximately 50 h) than with the pigmented strain (approximately 25 h). The addition of melanin to TBTC-containing growth media resulted in a reduction in toxicity and attainment of higher cell yields. The applied and environmental significance of these interactions are discussed. Springer-Verlag, 1990 Gadd G. Department of Biological Sciences, University of Dundee, DD1 4HN, Scotland, UK aut Gray D. Department of Biological Sciences, University of Dundee, DD1 4HN, Scotland, UK aut Newby P. Department of Biological Sciences, University of Dundee, DD1 4HN, Scotland, UK aut Applied Microbiology and Biotechnology Springer-Verlag 34/1(1990-10-01), 116-121 0175-7598 34:1<116 1990 34 253 https://doi.org/10.1007/BF00170934 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00170934 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gadd G. Department of Biological Sciences, University of Dundee, DD1 4HN, Scotland, UK aut NATIONALLICENCE 700 1- Gray D. Department of Biological Sciences, University of Dundee, DD1 4HN, Scotland, UK aut NATIONALLICENCE 700 1- Newby P. Department of Biological Sciences, University of Dundee, DD1 4HN, Scotland, UK aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer-Verlag 34/1(1990-10-01), 116-121 0175-7598 34:1<116 1990 34 253 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer