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undergraduate thesis
Ispitivanje primjene odabranog biljnog materijala roda Rosa kao kiselo-baznog indikatora
2022. urn:nbn:hr:182:226650
Krznarić, Marija
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Krznarić, M. (2022). Ispitivanje primjene odabranog biljnog materijala roda Rosa 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:182:226650

Krznarić, Marija. "Ispitivanje primjene odabranog biljnog materijala roda Rosa kao kiselo-baznog indikatora." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2022. https://urn.nsk.hr/urn:nbn:hr:182:226650

Krznarić, Marija. "Ispitivanje primjene odabranog biljnog materijala roda Rosa kao kiselo-baznog indikatora." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2022. https://urn.nsk.hr/urn:nbn:hr:182:226650

Krznarić, M. (2022). 'Ispitivanje primjene odabranog biljnog materijala roda Rosa kao kiselo-baznog indikatora', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 19 January 2025, https://urn.nsk.hr/urn:nbn:hr:182:226650

Krznarić M. Ispitivanje primjene odabranog biljnog materijala roda Rosa kao kiselo-baznog indikatora [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2022 [cited 2025 January 19] Available at: https://urn.nsk.hr/urn:nbn:hr:182:226650

M. Krznarić, "Ispitivanje primjene odabranog biljnog materijala roda Rosa kao kiselo-baznog indikatora", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:182:226650

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Metadata
TitleIspitivanje primjene odabranog biljnog materijala roda Rosa kao kiselo-baznog indikatora
Title (english)Study of the application of selected plant material from Rosa genus as acid-base indicator
AuthorMarija Krznarić
MentorAna Amić (mentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2022-09-13, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Applied Chemistry
Abstract
Rod Rosa, ruže, jedan je od najznačajnijih rodova porodice Rosaceae, ružovki, koji je široko rasprostranjen i lako dostupan za korištenje u brojne svrhe. Obzirom na visoku cijenu i štetan učinak sintetskih kiselo-baznih indikatora, sve se više počinju ispitivati biljni materijali koji u svome sastavu sadrže pigmente koji mijenjaju boju medija ovisno o pH. Antocijanini primjer su takvih pigmenata. Radi se o spojevima koji su široko zastupljeni u biljnom svijetu, pa se mogu naći i u cvijetu ruže. Ovi spojevi pridonose obojenju cvijeta i ploda, a njihova velika rasprostranjenost navela je znanstvenike da ispitaju mogu li se ruže koristiti kao alternativni, odnosno prirodni, kiselo-bazni indikator. Cilj ovog rada bio je ispitati potencijal primjene odabranog biljnog materijala roda Rosa kao kiselo-baznog indikatora. U tu svrhu korištene su suhe latice različitih vrsta ruža u kombinaciji s odabranim otapalima (voda, etanol, metanol i aceton). Rezultati istraživanja pokazali su da se većina ispitanih ruža može koristiti kao prirodni kiselo-bazni indikator koji je, za razliku od sintetskih, niže cijene, pristupačniji te nije štetan za okoliš i ljude. Od ispitanog biljnog materijala, među vizualno najistaknutijima pokazale su se roza i crvena ruža, dok narančasta i bijela ruža nisu pokazale vizualno dojmljive rezultate, ali i one imaju potencijal primjene kao prirodni kiselo-bazni indikatori.
Abstract (english)
The genus Rosa, the rose, is one of the most important genera in the Rosaceae family and is widely distributed and easily accessible for a number of purposes. Given the high price and harmful effect of synthetic acid-base indicators, more research deals with natural materials containing plant pigments which change colour of the medium depending on the pH. Anthocyanines are an example of such pigments. They are widely distributed in the plant kingdom and can be found in the rose flower. These compounds contribute to the colouring of the flower and the fruit, leading scientists to examine whether roses can be used as an alternative, i.e. as a natural, acid-base indicator. The aim of this work was to examine the potential of the application of selected plant material of genus Rosa as an acid-base indicator. For this purpose, dry petals of different types of roses in combination with selected solvents (water, ethanol, methanol and acetone) were used. The results of this work showed that most of examined roses can be used as a natural acid-base indicator, which, unlike synthetic, has a lower price, is easily available and is not harmful to the environment and to people. Among used plant material, pink and red roses were visually the most prominent, while the orange and white roses did not show visually impressive results, but they also have the potential to be used as natural acid-base indicators.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:226650
Study programmeTitle: 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 on2022-11-02 11:03:07