Abstract:Background: Microbial growth needs C, N, P, S as well as metal ions such as magnesium, which is a major cofactor for enzymes involved in various metabolic activities. Yeast extract is widely used as nitrogen supply as well as vitamins and growth factors to sustain microbial growth in the culture medium. Zymomonas mobilis is a model ethanologenic bacterium for ethanol production, and has been developing as a chassis for diverse biochemical production. Although yeast extract is routinely used to prepare rich med… Show more
“…Despite the control's OD 600 reached 1.88, the ethanol fermentation efficiency was only 69.21% (Table 4; Figure 1e). This uncoupling between growth and fermentation performance has been reported Z. mobilis, partly due to the insufficient nitrogen source and metal ions of the fermentation medium (Li et al, 2020).…”
Section: Nitrogen Source Optimizationmentioning
confidence: 70%
“…Moreover, the nitrogen source in the microbial fermentation system is usually the most costly ingredient, and ethanol production will be significantly reduced due to the lack of nitrogen source (Puligundla et al, 2019;Yue et al, 2012). Z. mobilis can grow using a wide variety of nitrogen sources, of which organic nitrogen sources such as yeast extract (YE) or peptone are most conducive to cell growth (Li et al, 2020). However, the cost of YE is relatively high.…”
This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
“…Despite the control's OD 600 reached 1.88, the ethanol fermentation efficiency was only 69.21% (Table 4; Figure 1e). This uncoupling between growth and fermentation performance has been reported Z. mobilis, partly due to the insufficient nitrogen source and metal ions of the fermentation medium (Li et al, 2020).…”
Section: Nitrogen Source Optimizationmentioning
confidence: 70%
“…Moreover, the nitrogen source in the microbial fermentation system is usually the most costly ingredient, and ethanol production will be significantly reduced due to the lack of nitrogen source (Puligundla et al, 2019;Yue et al, 2012). Z. mobilis can grow using a wide variety of nitrogen sources, of which organic nitrogen sources such as yeast extract (YE) or peptone are most conducive to cell growth (Li et al, 2020). However, the cost of YE is relatively high.…”
This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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