Toksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae

Brajak, Vlatka

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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

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APA 6th Edition

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

MLA 8th Edition

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

Chicago 17th Edition

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

Harvard

Brajak, V. (2009). 'Toksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae', Master's thesis, University of Zagreb, Faculty of Science, accessed 19 April 2024, https://urn.nsk.hr/urn:nbn:hr:217:681454

Vancouver

Brajak V. Toksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2009 [cited 2024 April 19] Available at: https://urn.nsk.hr/urn:nbn:hr:217:681454

IEEE

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

Cite this item: https://urn.nsk.hr/urn:nbn:hr:217:681454

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Title	Toksičnost komercijalnih surfaktanata na kvasac Saccharomyces cerevisiae
Title (english)	The toxicity of commercial surfactants on yeast Saccharomyces cerevisiae
Author	Vlatka Brajak
Mentor	Jasna Hrenović (mentor)
Committee member	Jasna Hrenović (predsjednik povjerenstva)
Committee member	Mirjana Kalafatić (član povjerenstva)
Committee member	Zoran Tadić (član povjerenstva)
Committee member	Sven Jelaska (član povjerenstva)
Granter	University of Zagreb Faculty of Science (Department of Biology) Zagreb
Defense date and country	2009, 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)
Language	croatian
URN:NBN	urn:nbn:hr:217:681454
Study programme	Title: 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 resource	Text
File origin	Born digital
Access conditions	Open access
Terms of use
Repository	Repository of the Faculty of Science
Created on	2018-03-07 09:11:38

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