摘要
采用亚临界流体技术萃取牡丹籽油,通过正交试验对制油工艺进行优化,并对此法所得牡丹籽油的脂肪酸组成及理化性质进行分析。结果表明,最优萃取工艺条件为萃取温度50℃、萃取压强0.5 MPa、每次萃取30 min、萃取3次,该条件下牡丹籽出油率达24.16%。所得牡丹籽油共鉴定出12种脂肪酸,主要为亚麻酸(45.412 2%)、亚油酸(38.119 9%)、棕榈酸(11.124 6%)和硬脂酸(3.648 9%)。其理化指标为:相对密度0.901 3、折光指数1.474 2、酸值3.25 mg KOH/g、碘值175 g I2/100 g、皂化值176 mg KOH/g、过氧化值1.48 meq/kg。
An orthogonal array design was employed to optimize the subcritical fluid extraction of seed oil from tree peony(Paeonia suffruticosa Andr.). The fatty acid composition and physicochemical properties of the seed oil were analyzed. The results showed that the optimum extraction conditions were determined to be extraction at 50 ℃ and 0.5 MPa performed three times for 30 min each,resulting in an oil yield of 24.16%. Twelve fatty acids were identified in the extracted seed oil and the major fatty acids were linolenic acid(45.412 2%),linoleic acid(38.119 9%),palmitic acid(11.124 6%) and stearic acid(3.648 9%). The physicochemical indexes were as follows: relative density 0.901 3,index of refraction 1.474 2,acid value 3.25 mg/g,iodine value 175 g/100 g,saponification value 176 mg/g,and peroxide value 1.48 meq/kg.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2014年第14期53-57,共5页
Food Science
基金
国家发改委国家生物医药高技术产业化项目(发改委高技[2007]2490号)
关键词
牡丹籽油
理化性质
脂肪酸组成
亚临界流体
tree peony seed oil
physicochemical properties
fatty acid composition
subcritical fluid extraction
