Akademik Veri Yönetim Sistemi
8TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE MANAGEMENT, Thessaloniki, Yunanistan, 23 - 26 Haziran 2021, ss.1-18, (Tam Metin Bildiri)
There are many divergent type of sour cherries worldwide, including Europe, North America and Asia
and their consumption considerably common. Sour cherry production continues to increase every year.
It was reached 1.38 million in 2016 (Yılmaz et al., 2015). Therefore, a large amount of waste is
generated. This huge amount of waste by-product should be valorized for national and environmental
economy. Sour cherries contain significant level of anthocyanins with high antioxidant activity.
(Blando et al., 2004).
In this study, total phenolic content (TPC) and total anthocyanins (TA) content of sour cherry residues
have been evaluated systematically. Ultrasound-assisted extraction system has been used for the
recovery of bioactive components. The extraction time of the system was determined before
proceeding with routine studies in order to obtain an extract rich in biologically active substances from
sour cherry peels with ultrasound assisted extraction. Additionally, several kinetic models (Film
theory, Peleg model, first order and second order mechanism model) were employed to examine the
kinetics of UAE. Face-centred composite design was carried out with three independent parameters to
identify the effect on the responses. Independent variables were chosen as amplitude, solid mass and
solvent concentration of ethanol-water mixture. TPC and TA were chosen as the response. The results
of the present study suggest that 500 W of microwave power, 80% solvent concentration and 90 s of
extraction time should be chosen as optimal operating conditions in order to extract the maximal TPM
( 46.52 mg-GAE g-1 FM) and TA (6.57 mg-cyn-3-glu g
-1 FM).