Akademik Veri Yönetim Sistemi
BIOMASS CONVERSION AND BIOREFINERY, cilt.14, sa.14, ss.15677-15688, 2024 (SCI-Expanded, Scopus)
Fruit juice industry generates huge amounts of waste by-products such as peel, leaf, and pulp, which might be alternative natural antioxidant source for the development of novel functional foods. In this study, plum was selected as the source of waste by-products. Peel comparing to leaf and pulp has been determined as the richest source (7-9 times more) in terms of the major phenolic compound (cyanidin-3-glucoside). Automatic solvent extraction (ASE) has been used to extract high added-value substances from the peels. In order to optimize the ASE system, response surface method (RSM) was used as statistical experimental design approach. Box-Behnken design type of RSM produced 17 experimental runs. The best phenolic (TPC), flavonoid (TFC) and cyanidin-3-glucoside yields of plum peel extract were found to be 34.94 mg-GAE, 612.96 mg-CE and 21.19 mg per g fresh peel under the optimal conditions (37% ethanol concentration, similar to 20% acid concentration, and 35 min of time). Additionally, antioxidant activity test results performed by 2 methods (DPPH and ABTS) show that the selected raw material is a source of potential antioxidant additive in food formulations.