摘要
采用分子蒸馏对脱色DHA藻油进行纯化,以酸值、不皂化物、DHA含量等为分析指标,考察了不同的蒸馏温度、进料速率、刮膜器转速对DHA藻油分离除杂效果的影响。结果显示,在进料预热温度30℃,冷凝水25℃,系统操作压力0.3 Pa条件下,蒸馏温度240℃,进料速率2.0 mL/min,刮膜器转速150 r/min为最佳工艺参数。采用气相色谱分析,分子蒸馏纯化后DHA含量46.07%,高于传统脱臭工艺的38.41%。
The purification of DHA algal oil by molecular distillation was studied. The effect of distillation temperature, feeding rate and scraper speed on DHA algal oil separation was taken into consideration by analysing the indicators such as acid value, non - saponification content and DHA content were measured. The results showed that the content of DHA was up to 46.07% under the conditions ： system operation pressure 0.3 Pa, distillation temperature 240℃, feeding rate 2.0 mL/min and scraper speed 150 r/min.
出处
《中国油脂》
CAS
CSCD
北大核心
2012年第6期6-10,共5页
China Oils and Fats
基金
国家自然科学基金重点项目(No.20936002)
国家自然科学基金重点项目(No.21176124)
国家科技支撑计划(2011BAD23B03)
关键词
DHA藻油
分子蒸馏:纯化:脱臭
DHA algal oil
molecular distillation
purification
deodorization
