不同型号酵母浸粉及补糖对异养微藻生长的影响

微藻在FM802、FM902和FM760 3种不同型号的安琪酵母浸粉配制的培养基中进行异养生长,培养条件为28℃、200 r/min的摇床中进行暗培养,培养过程中补糖1次,每隔24 h取样20 mL进行分析检测。结果表明:补糖情况下,型号为FM802的酵母浸粉比FM902培养微藻的效果稍好,FM760培养效果稍差;补糖有利于微藻干物质重的增加;在pH值为4.2~5.5的培养基中,微藻仍能快速生长。

Effect of Different Types of Yeast Extract Powder and Carbohydrate Supplement on the Growth of Heterotrophic Microalgae

The heterotrophic microalgae was cultured in the culture medium compounded by FM802,FM902 and FM760 three different types of angel yeast extract powders.The culture conditions were temperature 28 ℃ and shaker rate 200 r/min of the shaking tables in darkness.In the process of cultivating had a carbohydrate supplement,and sampled 20 mL for analysis every 24 h,the experimental results showed that through carbohydrate supplement,the type for FM802 of yeast extract powder was slightly better than FM902 cultivate microalgae,the effect of FM760 was a bit poor.Carbohydrate supplement was benefit to increase the dry weight of microalgae.Microalgae still growed quickly when the pH value of culture medium was 4.2~4.5.