Premium
Inclusion complexes of yellow bell pepper pigments with β ‐cyclodextrin: preparation, characterisation and application as food natural colorant
Author(s) -
Lobo Francine Albernaz TF,
Silva Vitoria,
Domingues Josiane,
Rodrigues Silvana,
Costa Valéria,
Falcão Deborah,
de Lima Araújo Kátia G
Publication year - 2018
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.8760
Subject(s) - differential scanning calorimetry , pepper , pigment , cyclodextrin , chemistry , fourier transform infrared spectroscopy , natural dye , carotenoid , bleu , food science , nuclear chemistry , chromatography , organic chemistry , dyeing , chemical engineering , physics , engineering , thermodynamics , machine translation , artificial intelligence , computer science
BACKGROUND This work aimed to prepare inclusion complexes using yellow bell pepper pigments and β ‐cyclodextrin by two different procedures (method A, ultrasonic homogenisation; method B, kneading), to characterise them and evaluate their colour stability in an isotonic beverage model. The extract/ β ‐cyclodextrin ratio was 1:2 for both inclusion methodologies evaluated. The formed extract– β ‐cyclodextrin complexes and a physical mixture of extract and β ‐cyclodextrin were evaluated by differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR). RESULTS Both methodologies resulted in good complex yield and inclusion efficiency. The colour indices L * (lightness), a * (green/red) and b * (blue/yellow) of isotonic drinks added with the complexes were measured during storage under irradiance (1400 lx) and in the absence of light at temperatures between 25 and 31 °C for 21 days. CONCLUSION The complex obtained by inclusion method B promoted better colour protection for the beverage compared with the use of the crude extract, showing that the molecular inclusion of yellow bell pepper carotenoids can provide good results for that purpose. © 2017 Society of Chemical Industry