Abstract:

The purpose of the present study was to optimize seed oil extraction from Chinese dwarf cherry using
combination of response surface methodology and single factor method. The optimal extraction parameters were found to be
a solvent volume to seed kernel ratio of 9.18:1 (mL/g), 5 h extraction time and 57.7 ℃ extraction temperature, leading to an
oil yield of 84.57%. The fatty acid composition of the refined oil was determined by gas chromatography. Eleven fatty acids
were detected in the refined oil, including 63.0% oleic acid and 30.7% linoleic acid. The radical scavenging rates of the oil at
concentrations of 0.7 and 1.2 mg/mL against hydroxyl and superoxide anion radicals were 90.28% and 92.60%, respectively.

Key words: seed kernel oil of Chinese dwarf cherry, extraction process, response surface methodology, fatty acids, antioxidant activity