相关实验视频
Updated: Jul 6, 2025

08:13
Preparation of Biopolymer Aerogels Using Green Solvents
Published on: July 4, 2016
17.7K
气体发酵与水电解相结合,通过工程拉尔斯托尼亚环氧化物 (Ralstonia eutropha) 来从二氧化碳中生产聚酸聚合物
Gabriele Di Stadio1, Izumi Orita1, Ryuhei Nakamura2
1School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan.
Bioresource technology
|December 30, 2023
概括
这项研究开发了一种闭路系统,用于培养Ralstonia eutropha以产生多基酸 (PHA). 该系统有效地将气和电力转化为生物质和PHA,显示出高能转化能力.
科学领域:
- 生物技术是生物技术.
- 微生物工程 微生物工程
- 可持续化学 可持续化学
背景情况:
- 用于生物聚合物生产的氧化细菌的自培养具有挑战性.
- 需要有效和安全的培养系统来进行工业规模的聚胺酸 (PHA) 合成.
- 拉尔斯托尼亚 (Ralstonia eutropha) 是一种有前途的微生物,可用于PHA的生产.
研究的目的:
- 开发一种循环回收气体闭环培养系统,以安全地进行Ralstonia eutropha的自培养.
- 为了优化PHA生产使用氧化菌株.
- 评估生物工艺的能量转换效率.
主要方法:
- 开发一个闭环培养系统,自动反调节气体流 (H2,CO2,O2,N2).
- 使用非可燃气体混合物的工程拉尔斯托尼亚缩菌株的培养.
- 过度表达编码细胞质碳酸无水酶的can基因,以增强PHA组成.
主要成果:
- 在恒定的气体成分下实现了Ralstonia eutropha的安全自培养.
- 生产的1.71 g/L的聚3-基酸-co-12.5 mol% 3-基酸) 的细胞含量为69.2 wt%.
- 通过基因过度表达,增加了3-基酸盐分数到19.6mol%.
- 在输入H2上确定了生物质 (72.9%) 和PHA (63.1%) 的高收益率,对应于电力分别为51.0%和44.2%的收益率.
- 估计太阳能对生物质/PHA的效率为2.1-3.8%.
结论:
- 开发的回收气封闭电路系统使R. eutropha用于PHA生产的安全和高效的自培养成为可能.
- 工程R.eutropha显示了将可再生资源 (,电力) 转化为有价值的生物聚合物的巨大潜力.
- 该系统突出了重要的能量转换能力,为可持续的生物聚合物制造铺平了道路.
相关概念视频
Types of Step-Growth Polymers: Polyesters
2.2K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.2K
Bioremediation
18.4K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.4K
Fates of Pyruvate
8.5K
Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
8.5K

