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undergraduate thesis
Ispitivanje primjene ploda šumske tise, Taxus baccata L., kao kiselo-baznog indikatora
2023. urn:nbn:hr:182:390178
Gajić, Tatjana
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Gajić, T. (2023). Ispitivanje primjene ploda šumske tise, Taxus baccata L., kao kiselo-baznog indikatora (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:390178

Gajić, Tatjana. "Ispitivanje primjene ploda šumske tise, Taxus baccata L., kao kiselo-baznog indikatora." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2023. https://urn.nsk.hr/urn:nbn:hr:182:390178

Gajić, Tatjana. "Ispitivanje primjene ploda šumske tise, Taxus baccata L., kao kiselo-baznog indikatora." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2023. https://urn.nsk.hr/urn:nbn:hr:182:390178

Gajić, T. (2023). 'Ispitivanje primjene ploda šumske tise, Taxus baccata L., kao kiselo-baznog indikatora', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 18 November 2024, https://urn.nsk.hr/urn:nbn:hr:182:390178

Gajić T. Ispitivanje primjene ploda šumske tise, Taxus baccata L., kao kiselo-baznog indikatora [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2023 [cited 2024 November 18] Available at: https://urn.nsk.hr/urn:nbn:hr:182:390178

T. Gajić, "Ispitivanje primjene ploda šumske tise, Taxus baccata L., kao kiselo-baznog indikatora", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:182:390178

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Metadata
TitleIspitivanje primjene ploda šumske tise, Taxus baccata L., kao kiselo-baznog indikatora
Title (english)Study of the application of common yew fruit, Taxus baccata L., as acid-base indicator
AuthorTatjana Gajić
MentorAna Amić (mentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2023-09-26, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Applied Chemistry
Abstract
Pomoću pH vrijednosti možemo opisati kemijske uvjete u otopini i odrediti točku ekvivalencije. Osim toga, mjerenje pH vrijednosti koristi se i izvan kemijskog laboratorija, primjerice u svrhu poboljšanja kvalitete ljudskog zdravlja možemo provjeriti i kontrolirati pH vrijednost tla, vode ili hrane. U kemiji su najzastupljeniji konvencionalni kiselo-bazni indikatori, a sve se više radi na razvoju prirodnih kiselo-baznih indikatora. Tako pripremljeni indikatori sadrže biljne pigmente koji mijenjaju boju ovisno o pH vrijednosti sredine u kojoj se nalaze. Cilj ovog rada bio je ispitati potencijal primjene bobica šumske tise (Taxus baccata L.) kao kiselo-baznog indikatora u kombinaciji s odabranim otapalima (voda, metanol, etanol i aceton). Naime, bobice šumske tise izrazito su crvene boje i sadrže polifenole i karotenoide, što upućuje na moguću upotrebu kao kiselo-bazni indikator. Rezultati ispitivanja pokazali su vizualno najdojmljivije rezultate pri pH = 14, a aceton se pokazao kao najpogodnije otapalo za pripremu ovih indikatora.
Abstract (english)
Using the pH value, we can describe chemical conditions in solution and determine the equivalence point. pH value measurement is also used outside of chemical laboratory, for example in order to improve the quality of health, we can check and control the pH value of soil, water or food. Conventional acid-base indicators are the ones most commonly used in chemistry, but there is a lot of effort being put in the development of natural acid-base indicators. Indicators prepared in this way contain plant pigments that change colour depending on the pH value their environment. The aim of this work was to examine the potential of yew berries (Taxus baccata L.) as acid-base indicators in combination with selected solvents (water, methanol, ethanol and acetone). Yew berries are bright red and contain polyphenols and carotenoids, which points to their potential use as acid-base indicators. Obtained results showed visually most impressive results at pH = 14, and acetone showed to be the most suitable solvent for preparation of these indicators.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:390178
Study programmeTitle: University Undergraduate Study program Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2023-11-10 08:16:50