核桃仁经压榨得毛油,毛油在初温45℃,硅酸钠加量0 .15%(占毛油量),碱液浓度12.68%,沉淀时间4h;热水加量3%~5%(占毛油量),水化时间2 h;活性脱色白土(Ⅱ)加量2%,真空度0.1 MPa,干燥时间1 h,脱色温度100℃,时间30min;脱臭温度200℃,真空度0.1MPa,脱臭时间5h的条件下,经过精制,可获得优质高级烹调核桃油。其中不饱和脂肪酸含量高达90%,亚油酸含量达75%,还含有亚麻酸等多种不饱和脂肪酸。%Gross oil can be pressed from walnut kernel.At th e beginning temperature of 45℃,with 0.15% sodium silicate,sodium hydroxide dens ity of,3%~5% boiling water,2% reactive decolorize chalk,the pressure of 0.1 MPa the gross oil can be refined.The process needs about 13 h,whit subsidence time 4 h,washing time 2 h,decolorizing time 0.5 h,deodouring time 5 h, drying time 1 h.The high-quality refined oil contains 90% unsaturated fatty acid,with 75% lin oleiv acid,it also contains linolenic acid and other kinds of unsaturated fatty acid.
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