تحديد الظروف المثلى لنمو عزلات محلية من الخميرة Saccharomyces cerevisiae و إنتاج سكر التريهالوز

الملخص EN

Optimal conditions for growth and trehalose production of three selected local isolates of Saccharomyces cerevisiae designated as (Dl, D4, PI) were determined in shaking incubator and lab-scale ferinentor levels.

Results showed that there were compatibilities in growth and trehalose production conditions on both levels.

Although there were increases in biomass productivity and trehalose content on ferinentor level.

The optimal conditions for growth and trehalose production 30 °C, pH at 5.0 and optimum sugar concentration in culture medium (date fruit juice and salts) was 5.2 % and growth period 24 hrs.

Moreover, the rate of aeration on fermentor level was investigated and was found that, 120 liter of air / liter of culture medium / hr, was the optimal aeration rate for trehalose production.