MANUFACTURING METHOD OF HARDENED SOYBEAN OIL HAVING CONJUGATED LINOLEIC ACID(CLA)

摘要

PURPOSE: Provided is a method for manufacturing hardened soybean oil having a high content of conjugated linoleic acid(CLA) by controlling a catalyst, temperature and hydrogen pressure in a hardening process with improved stability at low manufacturing costs. CONSTITUTION: Hardened soybean oil is manufactured by hardening soybean oil under a nickel-sulfur catalyst of 0.4-0.5% at a temperature of 190-200deg.C after controlling hydrogen pressure to 0.5-0.6kg/cm¬2 in an iodine value of 120 or more and controlling the hydrogen pressure to 0.3-0.4kg/cm¬2 in an iodine value of below 120. The hardened soybean oil is treated with an antioxidant like polypenox, to recover oxidation stability. The oil has an iodine value of 95-115 and contains conjugated linoleic acid(CLA) of at least 10% or more.