Optimization of ultrasound-assisted extraction of polyphenols from globe artichoke (Cynara scolymus L.) bracts residues using response surface methodology.
antioxidant capac
extraction
optimization
polyphenols
ultrasound
Journal
Acta scientiarum polonorum. Technologia alimentaria
ISSN: 1898-9594
Titre abrégé: Acta Sci Pol Technol Aliment
Pays: Poland
ID NLM: 101295615
Informations de publication
Date de publication:
Historique:
entrez:
26
7
2021
pubmed:
27
7
2021
medline:
30
11
2021
Statut:
ppublish
Résumé
The globe artichoke (Cynara scolymus L.) is a rich source of phenolic compounds which may be extracted by ultrasound technology and used as a medicinal alternative. The objective of this work was to determine the radiation amplitude (%), ethanol concentration (%), and time extraction (min) required to guarantee an elevated content of polyphenol compounds. The optimal extraction conditions were assessed through the Box-Wilson design and by applying Composite Face Centered (CCFC) and total phenolic compounds (TPC) as the response variables. A quadratic model was adequate, with R2 = 0.993. The optimal conditions were a radiation amplitude of 97%, an ethanol concentration of 53%, and an extraction time of 9.7 min. The optimized extract of artichoke bracts (Cynara scolymus L.) showed a TPC of 25.13 (±0.030) mg GAE/g, an antioxidant activity DPPH of 39.79 (±0.014) mmol Trolox equivalents (TE), and an antioxidant capacity TEAC of 33.98 (±0.03) mmol Trolox equivalents. The results showed values closely related to the expected values, indicating that the models were well-developed.
Sections du résumé
BACKGROUND
BACKGROUND
The globe artichoke (Cynara scolymus L.) is a rich source of phenolic compounds which may be extracted by ultrasound technology and used as a medicinal alternative. The objective of this work was to determine the radiation amplitude (%), ethanol concentration (%), and time extraction (min) required to guarantee an elevated content of polyphenol compounds.
METHODS
METHODS
The optimal extraction conditions were assessed through the Box-Wilson design and by applying Composite Face Centered (CCFC) and total phenolic compounds (TPC) as the response variables.
RESULTS
RESULTS
A quadratic model was adequate, with R2 = 0.993. The optimal conditions were a radiation amplitude of 97%, an ethanol concentration of 53%, and an extraction time of 9.7 min. The optimized extract of artichoke bracts (Cynara scolymus L.) showed a TPC of 25.13 (±0.030) mg GAE/g, an antioxidant activity DPPH of 39.79 (±0.014) mmol Trolox equivalents (TE), and an antioxidant capacity TEAC of 33.98 (±0.03) mmol Trolox equivalents.
CONCLUSIONS
CONCLUSIONS
The results showed values closely related to the expected values, indicating that the models were well-developed.
Substances chimiques
Antioxidants
0
Biphenyl Compounds
0
Phenols
0
Picrates
0
Plant Extracts
0
Polyphenols
0
Ethanol
3K9958V90M
1,1-diphenyl-2-picrylhydrazyl
DFD3H4VGDH
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM