半连续法超临界CO_2流体萃取花生油及油品质检
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摘要
采用半连续法研究了超临界二氧化碳(SC-CO_2)萃取花生油的最佳萃取工艺条件,并将提取的花生油送至国家粮油质量监督检测中心检测。结果表明, SC-CO_2萃取花生油的最佳工艺条件为:萃取温度50℃,萃取压力30 MPa,动态萃取120 min。在此条件下出油率可达49%。检测结果显示:不溶性杂质含量<0.003 2%,酸值<12.5(KOH) mg/g,过氧化值<1.6 mmol/kg,未检出溶剂残留。超临界萃取的花生毛油色泽清亮、淡黄透明、出油率高,重要参数均能达到国家一级油标准,证明超临界萃取技术是一种能高效萃取高品质花生油的方法。
The optimal extraction conditions of supercritical carbon dioxide(SC-CO2) extraction of peanut oil were studied by semi-continuous method, and the extracted peanut oil was sent to the National Grain and Oil Quality Supervision and Inspection Center for testing. The results showed that the optimum conditions for the extraction of peanut oil by SC-CO2 were as follows: extraction temperature 50 ℃, extraction pressure 30 MPa, and dynamic extraction 120 min. Under the conditions,the oil yield was up to 49%. Test results were insoluble impurities content<0.003 2%, acid value<12.5(KOH) mg/g, peroxide value<1.6 mmol/kg, and no solvent residue was detected. The peanut oil by supercritical extraction had clear color, light yellow transparent, and high oil yield. The important parameters can reach the national first-class oil standard. Supercritical extraction technology is a method for efficiently extracting high quality peanut oil.
The optimal extraction conditions of supercritical carbon dioxide(SC-CO2) extraction of peanut oil were studied by semi-continuous method, and the extracted peanut oil was sent to the National Grain and Oil Quality Supervision and Inspection Center for testing. The results showed that the optimum conditions for the extraction of peanut oil by SC-CO2 were as follows: extraction temperature 50 ℃, extraction pressure 30 MPa, and dynamic extraction 120 min. Under the conditions,the oil yield was up to 49%. Test results were insoluble impurities content<0.003 2%, acid value<12.5(KOH) mg/g, peroxide value<1.6 mmol/kg, and no solvent residue was detected. The peanut oil by supercritical extraction had clear color, light yellow transparent, and high oil yield. The important parameters can reach the national first-class oil standard. Supercritical extraction technology is a method for efficiently extracting high quality peanut oil.
引文
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[2]张镜澄.超临界流体萃取[M].北京:化学工业出版社2000:134-136.
[3]于修烛,李志西,杜双奎.苹果籽油超声波辅助浸提及产品理化特性研究[J].农业工程学报,2005,21(9):155-159.
[4]ROSENTHAL D,PYLE D L,NIRANJAN K.Aqueous and enzymatic processes for edible oil extraction[J].Enzyme and Microbial Technology,1996,19(6):402-420.
[5]APARNA S,KHARE S K,GUPTA M N.Enzyme-assisted aqueous extraction of peanut oil[J].JAOCS,2002,79(3):215-218.
[6]韩布兴.超临界流体科学与技术[M].北京:中国石化出版社,2004:1-223.
[7]MARCELA L,MARTINEZ,MIGUEL A,et al.Pressing and supercritical carbon dioxide extraction of walnut oil[J].Journal of Engineering,2008,88:399-404.
[8]刘慎,邓煜,王钟武.核桃仁超临界CO2流体萃取研究[J].甘肃林业科技,2007,32(1):1-3.
[9]NATáLIA M,BRUNA R M,MARIA T F.Surpercuitica fluid extraction of peach(Prunus persica)almond oil:Process yield and extract composition[J].Bioresource Technology2010,101:5622-5632.
[10]曾虹燕,冯波.葵花籽油不同提取工艺的比较[J].中国油料作物学报,2005,27(3):70-73.
[11]董海洲,万本屹,李宏,等.葡萄籽油超临界CO2流体萃取的研究[J].食品与发酵工业,2002,28(3):35-39.