培养基对海洋酵母脂肪酸组成的影响

在海洋酵母基础培养基中添加了省事提取液、ＫＮＯ３、ＣｕＳＯ４和ＺｎｓＯ４４种因子，采用正交试验考察以上因子对海洋酵母脂肪酸组成的影响。研究结果表明，各试验组海洋酵母脂肪酸组成及含量均有较明显差异，其中ＫＮＯ３是影响酵母总脂含量和ｎ－３系列多不饱和脂肪酸（ＰＵＦＡ）含量的限制因子，省事提取海和ＺｎＳＯ４并列为制约酵母收获量的因素。４种因子对海洋酵母ｎ－３系列ＰＵＦＡ组成的影响不大。同时讨论了对微生物

The effect of culture mediums on fatty acid composition of marine yeast

Effects of extracted liquid of \%Laminaria japonica\%,KNO\-3,CuSO\-4 and ZnSO\-4 on fatty acid content of marine yeast were studied by means of orthogonal test. Results showed that fatty acid compositions and levels of the marine yeast varied among the treatments. KNO\-3 was the first limiting factor for n-3 series polyunsaturated fatty acids (PUFA) content and total lipid level of the yeast and ZnSO\-4, and extracted liquid of \%Laminaria japonica\% were the second limiting factor affecting yield and net n-3 series PUFA content in the yeast. There was no significant influence on n-3 series PUFA compositions among the treatment. The synthesis path of n-3 series PUFA and factors influencing lipid metabolism and production of n-3 series PUFA in the yeast were discussed.