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Articles

Inclusion of curcumin in b-cyclodextrin: a promising prospective as food ingredient

ORCID Icon, ORCID Icon, ORCID Icon, , ORCID Icon & ORCID Icon
Pages 1942-1952 | Received 01 Jul 2022, Accepted 05 Oct 2022, Published online: 18 Oct 2022
 

Abstract

In the present work, the inclusion complexes between curcumin (CC) and β-cyclodextrin (β-CD) were obtained through co-precipitation at different times of magnetic stirring and simple mixing. The stoichiometric ratio between CC and β-CD was ascertained to be 1:2. The samples prepared by co-precipitation (24 h magnetic stirring and 24 h cold static precipitation) and by simple mixing, showed the best performance in terms of powder recovery (72 and 97%, respectively), encapsulation efficiency (72 and 95%, respectively) and tinting power, while no significant differences were revealed in terms of loading capacity (about 14%). Using either inclusion method, the complexation of CC into β-CD make the colorant 20-fold more water soluble than pure CC. The pigment stability was also enhanced under different storage conditions (high temperature and light exposure), either when applied in liquid or gel state. However, after 30 days under natural light exposure, an appreciable colour change from yellow to orange was revealed to an extent probably perceptible by an inexperienced observer.

Authors contribution

Ilaria Benucci, Marco Esti: Conceptualization, Supervision, Validation, Writing-review & editing. Caterina Mazzocchi, Claudio Lombardelli: Data curation, Writing-original draft, Writing-review & editing. Felicia del Franco, Cerreti Martina: Formal analysis, Investigation, Methodology.

Disclosure statement

No potential conflict of interest was reported by the author(s).

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