Complex coacervation of anthocyanin-rich pigments from red cabbage (Brassica oleracea) with inulin, gum arabic and pea protein

Complex coacervation is a widely used method for bioactive compound microencapsulation. Red cabbage extract is a natural pigment that contains anthocyanins, which provide attractive and bright colors with no reported toxicity and associated healthy properties. These types of pigments have led to a d...

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Main Authors: Sandra Muñoz-Coyotecatl, Astrid Domínguez-Uscanga, Randy Ortiz-Castro, Greta H. Rosas-Saito, Gregorio Romero-De la Vega, Genaro Amador-Espejo, Diego A. Luna-Vital
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-03-01
Series:Frontiers in Nutrition
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Online Access:https://www.frontiersin.org/articles/10.3389/fnut.2025.1523365/full
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author Sandra Muñoz-Coyotecatl
Sandra Muñoz-Coyotecatl
Astrid Domínguez-Uscanga
Astrid Domínguez-Uscanga
Randy Ortiz-Castro
Greta H. Rosas-Saito
Gregorio Romero-De la Vega
Genaro Amador-Espejo
Genaro Amador-Espejo
Diego A. Luna-Vital
Diego A. Luna-Vital
author_facet Sandra Muñoz-Coyotecatl
Sandra Muñoz-Coyotecatl
Astrid Domínguez-Uscanga
Astrid Domínguez-Uscanga
Randy Ortiz-Castro
Greta H. Rosas-Saito
Gregorio Romero-De la Vega
Genaro Amador-Espejo
Genaro Amador-Espejo
Diego A. Luna-Vital
Diego A. Luna-Vital
author_sort Sandra Muñoz-Coyotecatl
collection DOAJ
description Complex coacervation is a widely used method for bioactive compound microencapsulation. Red cabbage extract is a natural pigment that contains anthocyanins, which provide attractive and bright colors with no reported toxicity and associated healthy properties. These types of pigments have led to a deep interest in developing natural colorants to at least partially replace their synthetic counterparts in the food industry. The present study aimed to encapsulate red cabbage extract using a complex coacervation system comprising gum arabic:inulin (GA:In) and pea protein (PP) as wall materials. A total of four treatments were tested, maintaining a consistent pea protein concentration (1%), and the concentrations of GA:In (1 and 3%) and red cabbage extract (1 and 10%) were varied. The results showed high encapsulation efficiency values, with all treatments achieving encapsulation levels above 95%. The total monomeric anthocyanin concentration was 6.7 μg anthocyanin Eq. C3G/mg of flour, and to explore bioactivity of the extract, α-amylase inhibition was analyzed, with an inhibitory percentage of 22.48% at a concentration of 0.5 mg/mL. The solubility of the coacervates ranged from 70.12 to 75.84% in water, and their morphology revealed irregular and porous shapes. Fourier Transform Infrared Spectroscopy (FTIR) analysis confirmed the formation of the coacervate-encapsulation complex. Characteristic bands showed the presence of functional groups from the wall materials and the encapsulated anthocyanins. These findings showed that the use of GA, In and PP as wall materials in complex coacervation can develop natural colorants with improved stability and functionality.
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spelling doaj-art-8e278b3cf30f425fbf0dbce010a688e32025-08-20T02:59:23ZengFrontiers Media S.A.Frontiers in Nutrition2296-861X2025-03-011210.3389/fnut.2025.15233651523365Complex coacervation of anthocyanin-rich pigments from red cabbage (Brassica oleracea) with inulin, gum arabic and pea proteinSandra Muñoz-Coyotecatl0Sandra Muñoz-Coyotecatl1Astrid Domínguez-Uscanga2Astrid Domínguez-Uscanga3Randy Ortiz-Castro4Greta H. Rosas-Saito5Gregorio Romero-De la Vega6Genaro Amador-Espejo7Genaro Amador-Espejo8Diego A. Luna-Vital9Diego A. Luna-Vital10Tecnológico de Monterrey, School of Engineering and Science, Monterrey, MexicoTecnológico de Monterrey, Institute for Obesity Research, School of Bioengineering and Science, Monterrey, MexicoTecnológico de Monterrey, School of Engineering and Science, Monterrey, MexicoTecnológico de Monterrey, Institute for Obesity Research, School of Bioengineering and Science, Monterrey, MexicoInstituto de Ecología, A.C., Red de Estudios Moleculares Avanzados, Edificio B, Xalapa, Veracruz, MexicoInstituto de Ecología, A.C., Red de Estudios Moleculares Avanzados, Edificio B, Xalapa, Veracruz, MexicoUniversidad Iberoamericana Puebla-IDIT, Boulevard del Niño Poblano, Reserva Territorial Atlixcáyotl, Puebla, MexicoTecnológico de Monterrey, School of Engineering and Science, Monterrey, MexicoCentro de Investigación en Biotecnología Aplicada, Tepetitla, Tlaxcala, MexicoTecnológico de Monterrey, School of Engineering and Science, Monterrey, MexicoTecnológico de Monterrey, Institute for Obesity Research, School of Bioengineering and Science, Monterrey, MexicoComplex coacervation is a widely used method for bioactive compound microencapsulation. Red cabbage extract is a natural pigment that contains anthocyanins, which provide attractive and bright colors with no reported toxicity and associated healthy properties. These types of pigments have led to a deep interest in developing natural colorants to at least partially replace their synthetic counterparts in the food industry. The present study aimed to encapsulate red cabbage extract using a complex coacervation system comprising gum arabic:inulin (GA:In) and pea protein (PP) as wall materials. A total of four treatments were tested, maintaining a consistent pea protein concentration (1%), and the concentrations of GA:In (1 and 3%) and red cabbage extract (1 and 10%) were varied. The results showed high encapsulation efficiency values, with all treatments achieving encapsulation levels above 95%. The total monomeric anthocyanin concentration was 6.7 μg anthocyanin Eq. C3G/mg of flour, and to explore bioactivity of the extract, α-amylase inhibition was analyzed, with an inhibitory percentage of 22.48% at a concentration of 0.5 mg/mL. The solubility of the coacervates ranged from 70.12 to 75.84% in water, and their morphology revealed irregular and porous shapes. Fourier Transform Infrared Spectroscopy (FTIR) analysis confirmed the formation of the coacervate-encapsulation complex. Characteristic bands showed the presence of functional groups from the wall materials and the encapsulated anthocyanins. These findings showed that the use of GA, In and PP as wall materials in complex coacervation can develop natural colorants with improved stability and functionality.https://www.frontiersin.org/articles/10.3389/fnut.2025.1523365/fullcomplex coacervationanthocyaninred cabbagenatural pigmentsmicroencapsulation
spellingShingle Sandra Muñoz-Coyotecatl
Sandra Muñoz-Coyotecatl
Astrid Domínguez-Uscanga
Astrid Domínguez-Uscanga
Randy Ortiz-Castro
Greta H. Rosas-Saito
Gregorio Romero-De la Vega
Genaro Amador-Espejo
Genaro Amador-Espejo
Diego A. Luna-Vital
Diego A. Luna-Vital
Complex coacervation of anthocyanin-rich pigments from red cabbage (Brassica oleracea) with inulin, gum arabic and pea protein
Frontiers in Nutrition
complex coacervation
anthocyanin
red cabbage
natural pigments
microencapsulation
title Complex coacervation of anthocyanin-rich pigments from red cabbage (Brassica oleracea) with inulin, gum arabic and pea protein
title_full Complex coacervation of anthocyanin-rich pigments from red cabbage (Brassica oleracea) with inulin, gum arabic and pea protein
title_fullStr Complex coacervation of anthocyanin-rich pigments from red cabbage (Brassica oleracea) with inulin, gum arabic and pea protein
title_full_unstemmed Complex coacervation of anthocyanin-rich pigments from red cabbage (Brassica oleracea) with inulin, gum arabic and pea protein
title_short Complex coacervation of anthocyanin-rich pigments from red cabbage (Brassica oleracea) with inulin, gum arabic and pea protein
title_sort complex coacervation of anthocyanin rich pigments from red cabbage brassica oleracea with inulin gum arabic and pea protein
topic complex coacervation
anthocyanin
red cabbage
natural pigments
microencapsulation
url https://www.frontiersin.org/articles/10.3389/fnut.2025.1523365/full
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