不同碳源对小球藻Chlorella zofingiensis异养产虾青素的影响

研究了葡萄糖、蔗糖和果糖对小球藻(Chlorella zofingiensis)异养生长及产虾青素的影响,结果表明,在糖浓度为20g/L时,细胞生长较快,但干重较小,虾青素含量较低;在糖浓度为50g/L时,细胞生长较慢,但干重较大,虾青素含量较高。3种碳源中蔗糖和葡萄糖效果较好,在蔗糖浓度为50g/L时,虾青素含量和产量分别达到0.94mg/g和9.61mg/L。

Effects of Carbon Sources on the Production of Astaxanthin by Chlorella zofingiensis in the Dark

This paper investigated the effects of carbon sources on the growth of Chlorella zofingiensis and the production of astaxanthin. The result showed that the concentration of 20g/L was beneficial to the growth of Chlorella zofingiensis, but on the this concentration biomass and astaxanthin content was low; on the concentration of 50g/L, the growth is slower, but biomass and astaxanthin content was high . Among the three carbon sources investigated , sucrose and glucose were more beneficial to growth and production of astaxanthin than fructose. When 50g/L sucrose was used , the astaxanthin content and astaxanthin yield was 0.94 mg/g and 9.61 mg/L respectively.