【摘要】 针对鱼油混浊现象和原因,通过试验实践绘制鱼油冷却曲线,确定鱼油冬化采用两段慢速结晶工艺。第一段结晶温度为16℃,冷却速率为1℃～2℃/小时,14℃养晶12小时;第二段结晶温度为6℃,冷却速率为0.5℃～1℃/小时,4℃养晶12小时,搅拌速度2～5 rpm;并分析影响鱼油结晶效果因素,同峙提出鱼油冬化前需预精炼。更多还原

【Abstract】 The mechanism of turbid phenomenon in fish oil was mainly studied in this paper,and freez- ing curve was plotted through experiments.The results showed that two sections of slow crystallization were suitable to be used in processing:crystallizing point was at 16℃,freezing rate was about 1～2℃/h, then it was kept at 14℃for 12 hours in the firstsection;crystallizing point was at 6℃,freezing rate was about 0.5～1℃/h,then it was kept kept at 14℃for 12 hours,and mixing speed was 2～5r/m in the sec- ond section.The influences of factors affecting fish oil crystallization were also investigated,and the re- sults indicated that refining was needed before winterization in fish oil processing.更多还原