发明名称 |
CONCENTRATION OF GAMMA-LINOLENIC ACID |
摘要 |
<p>PURPOSE:To obtain the titled compound inexpensively, in high yield and harmlessly to human body without requiring removal of organic solvent by vacuum distillation, by fractionating gamma-linolenic acid containing natural fats and oils by chromatography using a supercritical fluid as a mobile phase. CONSTITUTION:gamma-Linolenic acid-containing natural fats and oils are fractionated by chromatography using a supercritical fluid as a mobile phase and a gamma- linolenic acid-containing glyceride fraction is collected to give the aimed com pound. A hydrocarbon such as methane or ethane besides carbon dioxide and freon is used as the supercritical fluid. The supercritical condition is >=72.4kg/cm<2> pressure and >=31.0 deg.C temperature in the case of carbon dioxide. A small amount of ethanol, butane, etc., having 40-120 deg.C boiling point is added to the supercritical fluid so that separating performance is improved. The partial collection condition by the supercritical chromatography is preferably 35-60 deg.C temperature and 90-250kg/cm<2> pressure.</p> |
申请公布号 |
JPS63216845(A) |
申请公布日期 |
1988.09.09 |
申请号 |
JP19870050984 |
申请日期 |
1987.03.05 |
申请人 |
AGENCY OF IND SCIENCE & TECHNOL |
发明人 |
SAKAKI KEIJI;SAKO TAKESHI;SATO SHINJI;SUGATA TAKESHI;SUZUKI OSAMU;NAKAZAWA NOBUAKI;SHIRATA TOSHIKATSU;YOKOCHI TOSHIHIRO |
分类号 |
C07C67/56;C07C69/58;C11B3/10;C11B7/00 |
主分类号 |
C07C67/56 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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