Eco-Friendly Extraction and Characterisation of Nutraceuticals from Olive Leaves

Molecules

Cinzia Benincasa¹  Giovanni Sindona²  Ilaria Santoro²  Monica Nardi³  Alfredo Cassano⁴ 

[1] CREA Research Centre for Olive, Citrus and TreeFruit, C.da Li Rocchi, I-87036 Rende, Cosenza, Italy;Dipartimento di Chimica, Università della Calabria, Cubo 12C, I-87036 Rende, Cosenza, Italy;Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, I-88100 Germaneto, Cosenza, Italy;Institute on Membrane Technology, ITM-CNR, c/o University of Calabria, via P. Bucci, 17/C, I-87036 Rende, Cosenza, Italy;

关键词: green chemistry;    olive leaves;    natural products;    tandem mass spectrometry;   

DOI  :  10.3390/molecules24193481

来源: DOAJ

【 摘 要 】

Olive tree (Olea europaea L.) leaf, a waste by-product of the olive oil industry, is an inexpensive and abundant source of biophenols of great interest for various industrial applications in the food supplement, cosmetic, and pharmaceutical industries. In this work, the aqueous extraction of high-added value compounds from olive leaves by using microfiltered (MF), ultrapure (U), and osmosis-treated (O) water was investigated. The extraction of target compounds, including oleuropein (Olp), hydroxytyrosol (HyTyr), tyrosol (Tyr), verbascoside (Ver), lutein (Lut), and rutin (Rut), was significantly affected by the characteristics of the water used. Indeed, according to the results of liquid chromatography tandem mass spectrometry, the extracting power of microfiltered water towards rutin resulted very poor, while a moderate extraction was observed for oleuropein, verbascoside, and lutein. On the other hand, high concentrations of hydroxytyrosol were detected in the aqueous extracts produced with microfiltered water. The extraction power of ultrapure and osmosis-treated water proved to be very similar for the bio-active compounds oleuropein, verbascoside, lutein, and rutin. The results clearly provide evidence of the possibility of devising new eco-friendly strategies based on the use of green solvents which can be applied to recover bioactive compounds from olive leaves.

【 授权许可】

Unknown