期刊论文

Liu, D.(dcliu@whpu.edu.cn)

中文

农业工程学报

1002-6819

2008

24

11

242-246

10.3321/j.issn:1002-6819.2008.11.049

本校为第一且通讯机构

为探讨乙醇作为植物油浸提溶剂的可行性,对乙醇溶液浸提紫苏籽低温压榨饼的工艺进行了研究.在浸提温度78℃下,采用单因素试验考察了浸提次数、料液比、乙醇浓度等因素对浸提粕中的残油率、蛋白质、单宁及植酸含量的影响.通过正交试验获得优化的工艺条件为:浸提次数为6次,料液比1∶2.5,乙醇浓度90%.在该工艺条件下,所获得的紫苏浸提粕中残油率为0.46%,蛋白质含量为50.5%(N×6.25,干基),单宁含量为1.7%,植酸含量为6.01%.当浸提所获混合油中油含量超过1%时,将混合油冷却至5℃下24 h可观察到分相现象,其中轻相含油量在3%以下,重相含油量在90%以上,有利于溶剂回收.因此,将乙醇溶液作为植物油脂浸提溶...

To investigate the possibility of using ethanol solution for vegetable oil extraction, the process of solvent extraction of dehulled perilla seed cake obtained from the mechanical press at low temperature was studied. Effects of extraction times, solid to solvent ratio and concentrations of ethanol solution on content of residual oil, protein, tannin and phytic acid in meal were determined by single factor experiments carried out at 78°C. Optimized condition of solvent extraction obtained from orthogonal experiment was using 90% (m/m) ethanol ...