The UV and VIS absorption spectra of jatrorubine

Scientific paper - Preliminary note / Short communication

• Author: Š. Komorsky-Lovrić
• Author: Z. Gašparec
• Author's institution: University of Zagreb; Faculty of Pharmacy and Biochemistry
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract (english)

The absorption spectra of water, methanolic, ethanolic and
propanolic solutions of jatrorubine in the VIS and UV spectral
range were recorded. The acidity and the alkalinity of the solutions
were changed in the wide range from pH = 2 to pH = 13 by
the addition of KOH and HCl in the solutions. From the influence
of pH on the shapes of the absorption curves, it was concluded
that jatrorubine exists as quaternary aminic cation in the acidic
medium and as the resonance dipole molecula in the basic media,
but no evidence for the existence of carbinolic form was found.
The results were compared with the literature data.

• Language: english
• Publication type: Scientific paper - Preliminary note / Short communication
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Croatica Chemica Acta
• Numbering: vol. 54, no. 1, pp. 97-103
• p-ISSN: 0011-1643
• e-ISSN: 1334-417X
• URN:NBN: urn:nbn:hr:163:037640
• Publication: 1981
• Document URL: https://hrcak.srce.hr/194429
• Type of resource: Text
• Access conditions: Open access
• Created on: 2020-05-05 14:17:48