title: A new biological test of water toxicity-yeast Saccharomyces cerevisiae conductometric test.
abstract: This new biological test of water toxicity is based on monitoring of specific conductivity changes of yeast Saccharomyces cerevisiae suspension as a result of yeast fermentation activity inhibition in toxic conditions. The test was verified on ten substances with various mechanisms of toxic effect and the results were compared with two standard toxicity tests based on Daphnia magna mobility inhibition (EN ISO 6341) and Vibrio fischeri bioluminescence inhibition (EN ISO 11348-2) and with the results of the S. cerevisiae lethal test (Rumlova and Dolezalova, 2012). The new biological test - S. cerevisiae conductometric test - is an express method developed primarily for field conditions. It is applicable in case of need of immediate information about water toxicity. Fast completion is an advantage of this test (time necessary for test completion is about 60min), the test is simple and the test organism - dried instant yeast - belongs among its biggest advantages because of its long-term storage life and broad availability.
authors.affiliation: Central Military Hospital - Military Faculty Hospital Prague, U Vojenské nemocnice 1200, 169 02 Praha 6, Czech Republic.
authors.forename: Jaroslava
authors.initials: J
authors.lastname: Dolezalova
authors.affiliation: Central Military Hospital - Military Faculty Hospital Prague, U Vojenské nemocnice 1200, 169 02 Praha 6, Czech Republic. Electronic address: lubomira.rumlova@centrum.cz.
authors.forename: Lubomira
authors.initials: L
authors.lastname: Rumlova
mesh_terms: D048908:Aliivibrio fischeri / Q000187:drug effects / Q000502:physiology; D000818:Animals; D003217:Conductometry / Q000379:methods*; D003621:Daphnia / Q000187:drug effects / Q000502:physiology; D004784:Environmental Monitoring / Q000379:methods; D005285:Fermentation / Q000187:drug effects; D020128:Inhibitory Concentration 50; D007928:Lethal Dose 50; D012441:Saccharomyces cerevisiae / Q000187:drug effects* / Q000502:physiology; D018675:Toxicity Tests / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D014874:Water Pollutants, Chemical
keywords: Biological test; Saccharomyces cerevisiae; Specific conductivity; Water toxicity