摘要
DHA是一种重要的功能性ω-3多不饱和脂肪酸。我国卫生部相继批准了寇氏隐甲藻、裂壶藻、吾肯氏壶藻DHA藻油为新资源食品。收集并分析了9个商品化DHA藻油的脂肪酸含量,结合文献数据,发现通过商品化DHA藻油的脂肪酸特征推测其微藻属名是可行的。其中寇氏隐甲藻DHA藻油中长链多不饱和脂肪酸只含DHA,几乎不含DPA。裂壶藻与吾肯氏藻DHA藻油中长链多不饱脂肪酸主要以DHA和DPA为主,DHA/DPA比例随藻种而恒定,几乎不随发酵条件而有明显变化;DHA/DPA比例在2～3的DHA藻油多半来自裂壶藻;DHA/DPA比例在4～6的DHA藻油既可能来自裂壶藻也可能来自吾肯氏壶藻。
DHA is an important functional omega -3 polyunsaturated fatty acid. Chinese Ministry of Health has successively approved microalgae DHA oils produced by Crpthecodinium cohnii , Schizochytrium sp. , Ulkenia sp. as novel resource food. Nine commercial microalgae DHA oils were collected and their fatty acid compositions were analyzed. The analysis result and related literature data showed that estimating microalgae genus through the fatty acid composition of the commercial microalgae DHA oil was possible. The long chain polyunsaturated fatty acids （LCPUFA） from Crpthecodinium cohnii contained only DHA and hardly DPA, and the LCPUFA from Schizochytrium sp. and Ulkenia sp. were composed of DHA and DPA. The ratio of DHA to DPA kept constant with the specific DHA microalgae, and had no significant changes on various fermentation conditions. For the ratio of DHA to DPA ranging 2 -3, the microalgae DHA oil was much possible from Schizochytrium sp. ; while the ratio of DHA to DPA ranging 4 -6, the microalgae DHA oil may be from Schizochytrium sp. or Ulkenia sp.
出处
《中国油脂》
CAS
CSCD
北大核心
2011年第6期45-49,共5页
China Oils and Fats
关键词
DHA
寇氏隐甲藻
裂壶藻
吾肯氏壶藻
脂肪酸组成
DHA
Crpthecodinium cohnii
Schizochytrium sp.
Ulkenia sp.
fatty acid composition
