Phenolic composition by UHPLC-Q-TOF-MS/MS and stability of anthocyanins from Clitoria ternatea L. (butterfly pea) blue petals.

Autor: Escher GB; Food Science and Technology Graduate Program, State University of Ponta Grossa, 84030-900 Ponta Grossa, Brazil. Electronic address: grazibragueto@hotmail.com., Wen M; State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, PR China., Zhang L; State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, PR China., Rosso ND; Food Science and Technology Graduate Program, State University of Ponta Grossa, 84030-900 Ponta Grossa, Brazil., Granato D; Food Processing and Quality, Production Systems Unit - Natural Resources Institute Finland (Luke), Tietotie 2, FI-02150 Espoo, Finland. Electronic address: daniel.granato@luke.fi.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2020 Nov 30; Vol. 331, pp. 127341. Date of Electronic Publication: 2020 Jun 15.
DOI: 10.1016/j.foodchem.2020.127341
Abstrakt: The aim of the present study was to evaluate the phenolic composition of crude lyophilized extracts (CLE) and partially purified (PPE) extracts of C. ternatea blue petals as well as the anthocyanin stability against pH, temperature and light in the presence and absence of fructooligosaccharides. Twelve compounds were tentatively identified by UHPLC-Q-TOF-MS/MS in CLE and PPE extracts. In direct/reverse spectrophotometric titration, anthocyanins showed colour changes between pH 2.25 to 10.20, and colour reversibility, maintaining antioxidant activity against the DPPH radical. The aqueous extracts at pH 3.6 and 5.4 exhibited thermal stability with the presence and absence of fructooligosaccharides with activation energy higher than 99 kJ/mol. The addition of fructooligosaccharides in the extracts at pH 5.4 exposed to light provided a protective effect against anthocyanin photodegradation. The data show the technological potential of aqueous extract of C. ternatea blue petals as a natural colourant in a functional beverage model system.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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