Natural deep eutectic solvents (NADES) are a green, promising class of solvents. Phenolic compounds are among the targets of NADES’ use in foods. A health claim is admitted by European Regulations for olive oils (OOs) containing at least 250 mg kg −1 of selected polyphenols (hydroxytyrosol and its derivatives, included tyrosol, HTD), but their determination involves analytical issues that are being currently debated. A NADES based on glucose and lactic acid was here used to develop a green and rapid tool for correct labelling of OOs. 163 OOs were submitted to liquid/liquid extraction with the NADES. Regression and classification approaches were adopted to relate features of the UV spectra of extracts to HTD content. The models allowed to assess HTD content for screening purposes (R 2prediction = 0.84, RMSEP = 35.5 mg kg −1 ). For labelling purposes, oils could be labelled according to health claim limits with an error of 0.6%.

An easy and green tool for olive oils labelling according to the contents of hydroxytyrosol and tyrosol derivatives: Extraction with a natural deep eutectic solvent and direct spectrophotometric analysis

Paradiso V. M.;Squeo G.;Pasqualone A.;Caponio F.;Summo C.
2019-01-01

Abstract

Natural deep eutectic solvents (NADES) are a green, promising class of solvents. Phenolic compounds are among the targets of NADES’ use in foods. A health claim is admitted by European Regulations for olive oils (OOs) containing at least 250 mg kg −1 of selected polyphenols (hydroxytyrosol and its derivatives, included tyrosol, HTD), but their determination involves analytical issues that are being currently debated. A NADES based on glucose and lactic acid was here used to develop a green and rapid tool for correct labelling of OOs. 163 OOs were submitted to liquid/liquid extraction with the NADES. Regression and classification approaches were adopted to relate features of the UV spectra of extracts to HTD content. The models allowed to assess HTD content for screening purposes (R 2prediction = 0.84, RMSEP = 35.5 mg kg −1 ). For labelling purposes, oils could be labelled according to health claim limits with an error of 0.6%.
File in questo prodotto:
File Dimensione Formato  
Lavoro 312 - Food Chem - DES.pdf

non disponibili

Tipologia: Documento in Versione Editoriale
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 974.63 kB
Formato Adobe PDF
974.63 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Manuscript - Copia.pdf

accesso aperto

Tipologia: Documento in Pre-print
Licenza: Creative commons
Dimensione 869.68 kB
Formato Adobe PDF
869.68 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/234439
Citazioni
  • ???jsp.display-item.citation.pmc??? 8
  • Scopus 26
  • ???jsp.display-item.citation.isi??? 22
social impact