<p>In this study, it was aimed to investigate the extraction of phenolic substances from</p><p>dried olive tree leaves and encapsulation techniques to convert this obtained extract into a</p><p>storable form. Alpha and beta cyclodextrin were used as encapsulation material. The</p><p>appropriate cyclodextrin dose and type were determined by providing the re-release of</p><p>phenolic substances encapsulated in both cyclodextrins. Phenolic compounds were extracted</p><p>by methanol extraction of olive leaves and total phenolic substance amounts were determined</p><p>as mg GAE/g dry matter by Folin-Cialculate method. Extractions were carried out from olive</p><p>leaves by methanol different dry matter/solvent ratio (5g/15mL, 5g/25 mL and 5g/35 mL) and</p><p>determined highest total polyphenol content. Results shows that highest total polyphenol</p><p>content is 42.58 – 49.59 mg GAE/g dry matter. According to the results obtained, alpha</p><p>cyclodectrin is much more efficient than beta in calculating the encapsulation efficiency using</p><p>water.Although the results are very close in the method using methanol, the efficiency of</p><p>alpha cyclodesktrin is still higher than beta.</p>