Recovery of Hydroxytyrosol Rich Extract from Two-Phase Chemlali Olive Pomace by Chemical Treatment
Article first published online: 31 AUG 2012
© 2012 Institute of Food Technologists®
Journal of Food Science
Volume 77, Issue 10, pages C1077–C1083, October 2012
How to Cite
Rigane, G., Bouaziz, M., Baccar, N., Abidi, S., Sayadi, S. and Salem, R. B. (2012), Recovery of Hydroxytyrosol Rich Extract from Two-Phase Chemlali Olive Pomace by Chemical Treatment. Journal of Food Science, 77: C1077–C1083. doi: 10.1111/j.1750-3841.2012.02898.x
- Issue published online: 12 OCT 2012
- Article first published online: 31 AUG 2012
- MS 20120479 Submitted 3/29/2012, Accepted 7/1/2012.
- chemical treatment;
- olive oil wastes;
- 2-phase olive pomace
Abstract: A very simple method is proposed to produce hydroxytyrosol, a commercially unavailable compound with well-known biological properties which justify a potential commercial application. The 2-phase Chemlali olive pomace is selected as substrate for chemical treatment. Different conditions of chemical treatment, including concentration of acid and alkaline solutions, time and temperature, were assayed. A high amount of hydroxytyrosol (1360 mg/kg of fresh 2-phase olive pomace) was obtained using water bath after treatment at 80 °C for 90 min with 1 M of H3PO4. However, treatment of 2-phase Chemlali olive pomace using autoclave apparatus could produce a large amount of hydroxytyrosol (1993.60 and 1515.88 mg/kg of fresh alperujo, 1 M acid and basic catalyst, respectively). By taking into consideration practical and economic aspects, acid-catalyzed treatment was more effective using autoclave conditions, whereas the alkali catalyzed conditions were not very suitable. This study could provide useful information for industry to produce the potentially bioactive compound.
Practical Application: The 2-phase Chemlali olive pomace is selected as substrate for chemical treatment. Treatment of “alperujo” using water bath or autoclave apparatus was carried out. A high amount of hydroxytyrosol was obtained using autoclave apparatus.