核桃油精炼工艺的研究

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2h；活性脱色白土（Ⅱ）加量2%，真空度0.1MPa，干燥时间1h，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，可获得优势高级烹调核桃油，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。

Refining Technology of Walnut Oil

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.