Effects of Metal Cations on Betanin Stability in Aqueous-organic Solutions

Sławomir Wybraniec , Karolina Starzak , Anna Skopińska , Maciej Szaleniec , Jacek Słupski , Katarzyna Mitka , Piotr Kowalski , Tadeusz Michałowski

Abstract

An effect of metal cations on betanin stability was investigated in aqueous and organic-aqueous solutions. The presence of organic solvents (methanol, ethanol, and acetonitrile) affects substantially the pigments decomposition in acidic media induced by metal cations whose degrading action in such media is significantly higher than in aqueous solutions. The influence of Cu2+ on the stability was studied by spectrophotometry in more detailed manner, because of its ability to form complexes with betanin. The possibility of a complex formation between betanin and Ni2+ was also stated at pH 7–8; its relatively high stability in aqueous samples was observed. A presence of numerous products of betanin decomposition was detected in the wavelength range 380–500 nm in spectra obtained for most of metal cations investigated, especially for higher concentrations of the organic solvents.
Author Sławomir Wybraniec
Sławomir Wybraniec,,
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, Karolina Starzak
Karolina Starzak,,
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, Anna Skopińska
Anna Skopińska,,
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, Maciej Szaleniec
Maciej Szaleniec,,
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, Jacek Słupski (FoFT / DoRMaFaVP)
Jacek Słupski,,
- Department of Raw Materials and Fruit and Vegetable Processing
, Katarzyna Mitka
Katarzyna Mitka,,
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, Piotr Kowalski
Piotr Kowalski,,
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, Tadeusz Michałowski
Tadeusz Michałowski,,
-
Journal seriesFood Science and Biotechnology, ISSN 1226-7708, (A 20 pkt)
Issue year2013
Vol22
No2
Pages353-363
Publication size in sheets0.5
Keywords in Englishbetanin, betalain, storage, degradation, oxidation
DOIDOI:10.1007/s10068-013-0088-7
URL http://link.springer.com/article/10.1007%2Fs10068-013-0088-7#page-1
Internal identifierWTŻ/2013/5
Languageen angielski
Score (nominal)20
ScoreMinisterial score = 15.0, 26-07-2017, ArticleFromJournal
Ministerial score (2013-2016) = 20.0, 26-07-2017, ArticleFromJournal
Publication indicators WoS Citations = 2
Citation count*
Additional fields
FinansowanieThis research was financed by Polish Ministry of Science and Higher Education for years 2007-2010. (Project no. N205 2991 33)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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