Page 46 - PowerPoint Presentation

HROMATOGRAFIJA BILJNIH PIGMENATA IZ RUŢA

CHROMATOGRAPHY OF PLANT PIGMENTS FROM ROSES

AUTOR: TAMARA ANDREJEVID, učenik VIII razreda, Osnovna škola ,,Branko Dopid” Beograd

REZIME

Cilj ovog rada je hromatografsko odvajanje i upoređivanje hromatogama sa biljnim pigmenatima
iz pet ruža čuvanih pod različitim uslovima. Četiri ruže su čuvane osam dana pri različitim uslovima pre
eksperimenta, a jedna crvena ruža je bila sveža. Ispitivali smo četiri crvene i jednu roze ružu, koja je
potpuno izgubila boju pre hromatografisanja. Hromatogrami ruža dobijeni eksperimentom su bili različiti.
To pokazuje da su pigmenti ruža osetljivi na promene uslova. Sa hromatograma se može očitati da su
pigmenti očuvani nezavisno od polarnosti njihovih molekula. Iznenadjujudi je rezultat da ruža čuvana u
vodi jedan dan i sedam dana bez vode daje sličan hromatogram kao i sveža ruža.

Ključne reči: hromatografija, pigmenti, ruže, način čuvanja, upoređivanje

SUMMARY

The theme of this paper is chromatographical separation of plant pigments and comparing
chromatograms with pigments from five roses kept in different conditions. Four rouses kept in different
conditions for eight days before investigation, and one red rose was fresh. We investigated four red and
one pink rose, which completly lost color before chromatography. Chromatograms of roses were
different. This shows that pigments of roses are sensitive to change of conditions. From chromatograms
it can be seen that pigments are stable no matter how polar their molecules are. Surprisengly, rose kept
in water one day, and then seven days without water give same chromatogram as fresh rose. This should
be investigated further more.

Key words: chromatography, pigments, roses, conditions, comparation