Influence of citrates and EDTA on oxidation and decarboxylation of betacyanins in red beet (Beta vulgaris L.) betalain-rich extract
Authors:
- Katarzyna Sutor-Świeży,
- Justyna Proszek,
- Łukasz Popenda,
- Sławomir Wybraniec
Abstract
The influence of stabilizing activity of citric buffers on betacyanins, as well as their thermal dehydrogenation and decarboxylation in a beetroot betalain-rich extract (BRE), was studied at pH 3–8 and temperature 30, 50 and 85 °C with an additional effect of EDTA. In acetate/ phosphate buffers, the highest stability is observed at pH 5 and it decreases toward pH 3 as well as pH 8, which is more remarkable at 85 °C. For the citrates, a contradictory effect was observed. Citric buffers tend to stabilize the substrate pigments and their intermediary products in acidic solutions, although increase their reactivity at pH 6–8. The highest impact of EDTA addition on pigment retention in acetate buffers is observed at 85 °C and pH 3–5 as well as 8, reflecting the preserving activity of EDTA at the most unfavorable conditions. At lower temperatures, pigment stability in more acidic conditions is still at higher levels even without addition of citrates or EDTA. The most striking effect on generation of betanin derivatives during heating is 2-decarboxylation which preferentially proceeds in the most acidic environment and this generation rate at 85 °C is much higher in the citrate buffers compared to acetates.
- Record ID
- CUT2107aa8bed5b426f9b15f8050919d7f6
- Publication categories
- ;
- Author
- Journal series
- Molecules, ISSN , e-ISSN 1420-3049, Biweekly
- Issue year
- 2022
- Vol
- 27
- No
- 24
- Pages
- [1-25]
- Article number
- 9054
- Other elements of collation
- rys.; schem.; tab.; wykr.; Bibliografia (na s.) - 22-25; Bibliografia (liczba pozycji) - 72; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 27, Iss. 24
- Substantive notes
- Special Issue: Discovery of New Functional Foods
- Keywords in English
- dehydrogenation, decarboxylation, xanbetanin, neobetanin, red beet root, colorants, betanin, betalain-rich extract, decarboxy-betacyanins, dehydrogenated betacyanins
- ASJC Classification
- DOI
- DOI:10.3390/molecules27249054 Opening in a new tab
- URL
- https://www.mdpi.com/1420-3049/27/24/9054 Opening in a new tab
- Related project
- Badania aktywności i stabilności barwników gomfreninowych z ekstraktów Basella alba L.. . Project leader at PK: , ,
Projects financed by NSC [Projekty finansowane przez NCN] - Language
- eng (en) English
- License
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT2107aa8bed5b426f9b15f8050919d7f6/
- URN
urn:pkr-prod:CUT2107aa8bed5b426f9b15f8050919d7f6
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.