| 摘要 |
PURPOSE:To easily achieve improvement of extraction efficiency and reduction of extraction time by applying a high pressure treatment to a system comprising liquid solvent containing extraction agent and solids to be extracted prior to or simultaneous with the extraction precessing of said system. CONSTITUTION:As a material to be extracted, 30 g of starch-free rice bran is suspended in 90g of 2% calcium hydroxide aqueous solution, which is stored in a pressure vessel and subjected to a cold isotropic pressurizing device, wherein pressure of 100-700MPa is held for 60min (50 deg.C) and said liquid is agitated at room temperatures for 30min and neutralized in acetic acid and then subjected to centrifugal separation (3000rpm, 10min) to obtain an extracted liquid. As a result, an extracted liquid of high concentration, having upper Brix degree of 2.5% or more, is obtained, which has been obtained by conventional agitation extraction of 2-4 hours. |
