Characterization of Marigold Flower (Tagetes erecta) Extracts and Microcapsules: Ultrasound-Assisted Extraction and Subsequent Microencapsulation by Spray Drying.
Foods
; 13(15)2024 Aug 01.
Article
en En
| MEDLINE
| ID: mdl-39123627
ABSTRACT
Ultrasound-assisted extraction using response surface methodology was employed to extract marigold flower, resulting in a marigold flower extract (MFE) with elevated levels of total phenolic compounds (TPCs), total flavonoid content (TFC), total carotenoid content (TCC), and antioxidant activity, as assessed by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assays, under conditions of 40 °C temperature, 15 min extraction time, and 68% ethanol concentration. The MFE was subsequently encapsulated using spray drying with 45% maltodextrin (MD) (MFE-MD; 11, 12) and 20% gum arabic (GA) (MFE-GA; 12, 13). The MD (12 ratio) sample showed the highest encapsulation yield, while the 45% MD (11 ratio) sample exhibited the highest encapsulation efficiency (p ≤ 0.05). Samples containing 45% MD (11 ratio) and 20% GA (12 ratio) had the highest moisture content, with the 45% MD (11 ratio) sample showing the lowest water activity (p > 0.05). These samples also displayed higher L* and a* values compared to the 20% GA samples, which had increased b* values (p ≤ 0.05). Micrographs of the 20% GA (13 ratio) and 45% MD (12 ratio) samples revealed spherical shapes with smooth surfaces. The 20% GA (12 ratio) microcapsules exhibited the highest total phenolic content (TPC) among the samples (p ≤ 0.05). Thus, ultrasound-enhanced extraction combined with response surface methodology proved effective in producing functional food ingredients from plants.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Foods
Año:
2024
Tipo del documento:
Article
País de afiliación:
Tailandia
Pais de publicación:
Suiza