%0 Journal Article
%A FU Yu-Jie
%A GUO Na
%A KOU Ping
%A SU Wen
%A WANG Xi-Qing
%A YANG Ming-Fei
%A ZANG Yu-Ping
%T Ultra Turrax-Microwave Assisted Extraction of Oil from <em>Pinus koraiensis</em> Sieb Seed and its Quality Evaluation
%D 2017
%R 10.7525/j.issn.1673-5102.2017.05.020
%J Bulletin of Botanical Research
%P 789-796
%V 37
%N 5
%X In this work, ultra turrax-microwave assisted extraction process was conducted to extract oil from <em>Pinus koraiensis</em> using ethanol as the extraction solvent. The effects of homogenization speed, homogenization time, liquid-solid ratio, microwave temperature, microwave power, and microwave time on the oil yield were investigated. The optimal conditions for the oil extraction from <em>P.koraiensis</em> seed were obtained as follows:homogeneous speed 12 000 r&middot;min<sup>-1</sup>, homogeneous time 120 s, the ratio of liquid to material 20 mL&middot;g<sup>-1</sup>, microwave temperature 60℃, microwave power 700 W and microwave time 50 min. Under the above conditions, the optimum oil yield was 60.3%. The fatty acid composition of <em>P.koraiensis</em> seed oil was analyzed by GC-MS, and the main components were identified as linoleic acid, stearic acid and palmitic acid. The contents of unsaturated fatty acid and specific pinolenic acid reached 85.55% and 13.65%, respectively. The antioxidant activity and physicochemical properties of <em>P.koraiensis</em> seed oil were also determined. The seed oil exhibited better DPPH radical scavenging activity with the IC<sub>50</sub> value of 0.0954 g&middot;mL<sup>-1</sup>. And the seed oil was a high quality natural oil with lower acid value, lower peroxide value and high iodine value.
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2017.05.020