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Characterization of polyphenolic compounds extracted from different varieties of almond hulls (Prunus dulcis L.)

Articolo
Data di Pubblicazione:
2019
Abstract:
Ultrasound-assisted extraction (UAE) was applied as a pretreatment technique to improve the recovery of polyphenols from the almond hulls of four Tunisian and three Italian almond varieties, followed by the characterization with HPLC-DAD. The operating parameters (solid/liquid ratio, extraction time, and ethanol concentrations) were optimized using a Response Surface Methodology. A polynomial equation was calculated to describe the relationship between the operating parameters and dependent variables as total polyphenolic content (TPC) and antioxidant activity (RSA). A desirability function approach was used to determine the optimum conditions for operating parameters: a solid:solvent ratio of 2 g/100 mL, an extraction time of 13 min, and an ethanol concentration of 51.2%. Among the almond varieties, Pizzuta and Fakhfekh showed the highest polyphenol content and antioxidant activity. HPLC-DAD analysis of almond hull extracts confirmed that chlorogenic acid, catechin, and protocatechuic acid were the most important polyphenols in almond hull. The results highlighted that UAE could be an effective technique for the recovery of phenolic compounds from almond hull, thereby making this byproduct a promising source of compounds with potential applications in food and healthcare sectors.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Almond hull; Polyphenols; Prunus dulcis L; Radical scavenging activity; Response surface methodology; Ultrasound-assisted extraction
Elenco autori:
Kahlaoui M.; Vecchia S.B.D.; Giovine F.; Kbaier H.B.H.; Bouzouita N.; Pereira L.B.; Zeppa G.
Autori di Ateneo:
ZEPPA Giuseppe
Link alla scheda completa:
https://iris.unito.it/handle/2318/1729631
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1729631/1217325/561.pdf
Pubblicato in:
ANTIOXIDANTS
Journal
  • Dati Generali
  • Aree Di Ricerca

Dati Generali

URL

https://www.mdpi.com/2076-3921/8/12/647/pdf

Aree Di Ricerca

Settori (14)


LS9_5 - Food biotechnology and bioengineering - (2022)

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CIBO, AGRICOLTURA e ALLEVAMENTI - Allevamento e Produzioni Animali

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CIBO, AGRICOLTURA e ALLEVAMENTI - Farmacologia Veterinaria

CIBO, AGRICOLTURA e ALLEVAMENTI - Miglioramento e difesa delle colture

CIBO, AGRICOLTURA e ALLEVAMENTI - Tecnologie alimentari e microbiologia degli alimenti

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MEDICINA, SALUTE e BENESSERE - Ricerca Traslazionale e Clinica

PIANETA TERRA, AMBIENTE, CLIMA, ENERGIA e SOSTENIBILITA' - Energia e Fonti Energetiche

PIANETA TERRA, AMBIENTE, CLIMA, ENERGIA e SOSTENIBILITA' - Foreste e Legno

PIANETA TERRA, AMBIENTE, CLIMA, ENERGIA e SOSTENIBILITA' - Risorsa suolo e ambiente

SCIENZE DELLA VITA e FARMACOLOGIA - Interazioni tra molecole, cellule, organismi e ambiente

SCIENZE DELLA VITA e FARMACOLOGIA - Tecnologie Farmaceutiche e Cosmetiche
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