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master's thesis
Toksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae
Zagreb: University of Zagreb, Faculty of Science, 2009. urn:nbn:hr:217:681454
Brajak, Vlatka
University of Zagreb
Faculty of Science
Department of Biology

Institutional repository: Repository of the Faculty of Science

Cite this document

Brajak, V. (2009). Toksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:681454

Brajak, Vlatka. "Toksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae." Master's thesis, University of Zagreb, Faculty of Science, 2009. https://urn.nsk.hr/urn:nbn:hr:217:681454

Brajak, Vlatka. "Toksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae." Master's thesis, University of Zagreb, Faculty of Science, 2009. https://urn.nsk.hr/urn:nbn:hr:217:681454

Brajak, V. (2009). 'Toksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae', Master's thesis, University of Zagreb, Faculty of Science, accessed 23 December 2024, https://urn.nsk.hr/urn:nbn:hr:217:681454

Brajak V. Toksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2009 [cited 2024 December 23] Available at: https://urn.nsk.hr/urn:nbn:hr:217:681454

V. Brajak, "Toksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2009. Available at: https://urn.nsk.hr/urn:nbn:hr:217:681454

Metadata
TitleToksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae
Title (english)The toxicity of commercial surfactants on yeast Saccharomyces cerevisiae
AuthorVlatka Brajak
MentorJasna Hrenović (mentor)
Committee memberJasna Hrenović (predsjednik povjerenstva)
Committee memberMirjana Kalafatić (član povjerenstva)
Committee memberZoran Tadić (član povjerenstva)
Committee memberSven Jelaska (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2009, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Cilj ovog rada je utvrđivanje toksičnosti komercijalnih surfaktanata kao sastavnog dijela deterdženata, omekšivača rublja i sredstava za čišćenje koji se koriste u domaćinstvima. Ispitano je 15 komercijalnih surfaktanata. Za utvrđivanje toksičnosti korištena su dva testa na kvascu S. cervisiae, fermentacijski test i test metilenskog modrila. Dobivene su EC50 vrijednosti prema kojima su surfaktanti svrstani u tri kategorije štetnosti. Tri ispitana surfaktanta pokazala su se toksičnim s izmjerenim EC50 vrijednostima između 1 i 10 mg/L, dok je šest spojeva pokazalo vrlo nisku toksičnost, s izmjerenim EC50 vrijednostima znatno iznad 100 mg/L. Ostalih šest uzoraka svrstano je u kategoriju štetnih s izmjerenim EC50 vrijednostima između 10 i 100 mg/L. Test metilenskim modrilom na kvascu S.cerevisiae pokazao se osjetljivijim od fermentacijskog testa jer je uglavnom davao niže EC50 vrijednosti.
Abstract (english)
The goal of this study was to assess toxicity of commercial surfactants as essential parts of detergent, fabric softeners and cleaning products which are used in households. 15 commercial surfactants were analyzed. The toxicity was evaluated by two tests on yeast, S. cervisiae, fermentation test and methylene blue dye test. According to obtained EC50 values sufractants were sorted in three categories of adversity. Three tested sufractants were proven toxic with EC50 values ranking between 1 and 10 mg/L, while six compounds showed very low level of toxicity with EC50 values considerably higher than 100 mg/L. Remaining six samples had been classified as not harmful for the enviroment, as their EC50 values ranked between 10 and 100 mg/L. Methylene blue dye test on yeast S. cervisiae was found to be more sensitive then fermentation test, becouse the estimated EC50 values using methylene blue dye test were mainly lower.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:681454
Study programmeTitle: Ecology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra ekologije i zaštite prirode (magistar/magistra ekologije i zaštite prirode)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2018-03-07 09:11:38