人工栽培欧李仁油的提取、成分分析及抗氧化性

以欧李仁为原料，利用响应面法优化欧李仁油的提取工艺。在单因素试验的基础上，进行响应面分析，确定欧李仁油的最佳提取工艺条件为：液料比9.18∶1（mL/g）、提取时间5 h、提取温度57.7 ℃。在此条件下欧李仁油的提取率为84.57%。用气相色谱法对得到的精炼油进行脂肪酸成分分析，共检测出11 种脂肪酸，其中油酸63.0%、亚油酸30.7%。同时以对羟自由基及超氧阴离子自由基的清除效果来测定精炼欧李仁油的抗氧化性，结果表明，精炼欧李仁油质量浓度为0.7 mg/mL时，对羟自由基的清除率为90.28%；精炼欧李仁油质量浓度为1.2 mg/mL时，对超氧阴离子自由基的清除率为92.60%。

Extraction,Fatty Acid Composition and Antioxidant Activity of Seed Kernel Oil from Cultivated Chinese Dwarf Cherry

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.