摘要
为优化超临界CO2萃取毛竹笋油的工艺参数,该研究通过单因素试验和正交试验考察了萃取压力、萃取温度、萃取时间和CO2流量等因素对毛竹笋油得率的影响,并利用气质联用(GC-MS)对毛竹笋油进行成分分析。研究确定超临界CO2萃取毛竹笋油的较佳工艺为:萃取压力25MPa、萃取温度55℃、萃取时间2.5h和CO2流量15L/h,较佳工艺条件下笋油得率为5.74%;GC-MS分析毛竹笋油,共鉴定出17种组分,其中β-谷甾醇、9,12-十八碳二烯酸和9,12,15-十八碳三烯酸的相对含量分别为26.00%、10.50%和9.83%。
In order to optimize the technological parameters of oil extraction from bamboo shoots （P. Pubescens） using supercritical CO2 extraction technique, the effects of extraction pressure, extraction temperature, extraction time and CO2 discharge on yield of the oil were investigated, and the components in the oil were also analyzed using gas chromatography-mass spectrometry （GC/MS）. The optimum extraction parameters were confirmed as follows： extraction pressure, extraction temperature, extraction time and CO2 discharge were 25 MPa, 55℃, 2.5 hours and 15 L/h. Under those optimum conditions, the yield was 5.74%. According to GC/MS analysis, 17 kinds of compounds were identified in the oil, and the main components were β-sitosterol （26.00%）, 9,12-Octadecadienoic acid （10.50%） and 9,12,15-Octadecatrienoic acid （9.83%）. The research lays a foundation for further study on effective and comprehensive utilization of bamboo shoots.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2009年第8期312-316,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家十一五科技支撑计划(2008BADA9B04)
中国博士后科学基金特别资助项目(20081460)
关键词
超临界流体
萃取
工艺
竹笋
supercritical fluids
extraction
technology
bamboo shoots
