Optimizing the Extraction Conditions of Hydroxytyrosol from Olive Leaves Using a Modified Spherical Activated Carbon: A New Experimental Design

Table 6

Comparison of several adsorbents efficiency for hydroxytyrosol recovery.

References	Recovery Yield	Adsorbent
Scoma et al. [44]	Removal of 60% phenolic compounds	Amberlite XAD16
Ena et al.[41]	60% of phenolic compounds were adsorbed	Dry Azolla
Zagklis et al. [45]	74% of hydroxytyrosol was recovered	Non ionic XAD4, XAD16 resin
Kaleh et al. [46]	79% of hydroxytyrosol and 95 % of tyrosol were adsorbed	Molecular imprinted polymer
Liu et al. [47]	88.58% of hydroxytyrosol	BMKX-4
Ortega et al. [48]	Amberlyst A26: 98%; Amberlite IRA-67: 57%	Ion-exchange resins: Amberlyst A26 and Amberlite IRA-67
Yangui et al. [49]	91% of Hydroxytyrosol was recovered	TRI-SBA-15