Cadmium biosorption by Saccharomyces cerevisiae

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Biotechnology and Bioengineering; (United States)

DOI:https://doi.org/10.1002/bit.260410809· OSTI ID:6773662

Volesky, B; May, H; Holan, Z R ^[1]

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1. McGill Univ., Montreal, Quebec (Canada)

Cadmium uptake by nonliving and resting cells of Saccharomyces cerevisiae obtained from aerobic or anaerobic cultures from pure cadmium-bearing solutions was examined. The highest cadmium uptake exceeding 70 mg Cd/g was observed with aerobic baker's yeast biomass from the exponential growth phase. Nearly linear sorption isotherms featured by higher sorbing resting cells together with metal deposits localized exclusively in vacuoles indicate the possibility of a different metal-sequestering mechanism when compared to dry nonliving yeasts which did not usually accumulate more than 20 mg Cd/g. The uptake of cadmium was relatively fast, 75% of the sorption completed in less than 5 min.

• OSTI ID: 6773662
• Journal Information: Biotechnology and Bioengineering; (United States), Journal Name: Biotechnology and Bioengineering; (United States) Vol. 41:8; ISSN BIBIAU; ISSN 0006-3592
• Country of Publication: United States
• Language: English

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ADSORPTION ISOTHERMS
AEROBIC CONDITIONS
CADMIUM
ELEMENTS
EUMYCOTA
FUNGI
GROWTH
ISOTHERMS
METABOLISM
METALS
MICROORGANISMS
PLANTS
POLLUTION
SACCHAROMYCES
SACCHAROMYCES CEREVISIAE
UPTAKE
YEASTS