Investigation of some features and economic research of usability of olive mill wastewater in olive oil industry

In this study, firstly, characterization of olive mill wastewater is determined which is from olive oil production facility located in the region of Ayvalık. It was found that KOİ 192 g/L, suspended solids content 9,8 g/L, oil and grease 13,09 g/L, pH 4,8, total organic carbon content 94,2 g/L, total N content 0,623 g/L and total fenol content was 800 mg/L . When other studies have investigated,olive mill wastewaters have high pollution as our study. After characterization of olive mill wastewater, extraction was performed and qualitative and quantitative analysis of the phenolic compounds was carried out in OMW by HPLC systems. It was found out that hydroxytyrosol 511,6 mg/L, tyrosol 79,8 mg/L, catechol 17,1 mg/L, vanilic acide 15,4 mg/L and 4-methylcatechol 11,3 mg/L. As a result high amounts of phenolic compounds was found to contain which are showing the natural antioxidant properties. Finally, It was determined that the antioxidant effects of olive mill wastewater known to exhibit high antioxidant capacity. Antioxidative features of OMW samples such as reducing power, total antioxidant activity, DPPH radical, ABTS•+ radical scavenging activities were investigated and results were compared to some standard antioxidants (BHT, Trolox, α-tocopherol). As a result , OMW showed antioxidant activity as high as the standard antioxidants. Therefore these naturel antioxidants can isolated from OMW and can be used in various industries.