相关实验视频

Updated: Feb 3, 2026

Biofilm Removal Using Carbon Dioxide Aerosols without Nitrogen Purge

Biofilm Removal Using Carbon Dioxide Aerosols without Nitrogen Purge

Published on: November 6, 2016

在混合的紫色细菌中,光自转型的多氧酸盐 (PHA) 积累使用酸盐,二氧化碳和一氧化碳

Mohammad Adib Ghazali Abdul Rahman¹, Bronwyn Laycock², Steven Pratt²

¹Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St. Lucia, QLD 4072, Australia.

Bioresource technology

|February 1, 2026

概括

混合紫色光合作用细菌有效地将CO2/H2等单碳 (C1) 基质转化为多基酸盐 (PHA). 补充 CO2 / H2 的形式进一步提高了 PHA 产量,显示了从工业废气中生产生物聚合物的潜力.

科学领域:

生物技术和工业微生物学
聚合物科学与工程聚合物科学与工程
可持续化学可持续化学

背景情况:

单碳 (C1) 基板为生物聚合物生产提供了传统碳原料的可持续替代品.
从C1化合物合成的多基酸盐 (PHA) 合成对于利用合成气等工业废物流至关重要.
与单一培养相比,对基于C1的PHA生产的混合微生物培养,特别是紫色光合作用细菌 (PPB) 的研究仍未得到充分探索.

研究的目的:

调查混合紫色光合作用细菌 (PPB) 培养物从各种C1基质中产生多酸盐 (PHA) 的潜力.
为了评估不同和碳成分对PHA生产效率的影响,在两阶段批量系统中.
探索使用混合C1基质提高PHA产量的策略,例如与CO2/H2.2结合的甲酸盐.

主要方法:

在双阶段批量过程中培养混合PPB培养物.
使用单碳基质,包括酸盐,CO2,CO和H2作为原料.
在不同的操作条件下分析PHA含量和生物质度.

主要成果:

混合PPB培养实现了显著的PHA积累,CO2/H2产生高达27%的PHA.
甲酸盐和CO/H2导致中度PHA水平 (分别为17%和13%),受基质同化途径的影响.
通过优化电子可用性和氧化还原条件,以CO2/H2增强的PHA产量增加到32%的重量.

结论:

混合PPB培养是一种可行且具有竞争力的平台,用于从C1基板生产光自营PHA.
卡尔文-本森-巴什姆循环促进了高效的二氧化碳纳入PHA.
C1基质的战略组合为合成天然气的高产生物聚合物合成提供了一个有希望的途径.

关键词:

生物塑料是生物塑料.在C1基质中,C1基质是混合文化是一种混合文化.一个光生物反应器.紫色的光合作用细菌是紫色的光合作用细菌.辛加斯天然气公司

更多相关视频

Measurement of Carbon Dioxide Production from Radiolabeled Substrates in Drosophila melanogaster

Measurement of Carbon Dioxide Production from Radiolabeled Substrates in Drosophila melanogaster

Published on: June 27, 2016

Calcium Carbonate Formation in the Presence of Biopolymeric Additives

Calcium Carbonate Formation in the Presence of Biopolymeric Additives

Published on: May 14, 2019

相关概念视频

Carbon-dioxide Fixation

Carbon-dioxide Fixation

Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...

Carbon Dioxide Transport in the Blood

Carbon Dioxide Transport in the Blood

Carbon dioxide (CO2) transport in the blood is critical to human physiology. On average, our body cells produce around 200 mL of CO2 per minute, precisely the quantity expelled by the lungs. This process involves the transportation of CO2 from the tissue cells to the lungs in three primary forms.
Forms of CO2 Transport
1. Dissolved in plasma: A small percentage (7-10%) of CO2 is transported and dissolved directly in the plasma.
2. Carbaminohemoglobin: Just over 20% of CO2 is chemically bound to...

The Carbon Cycle

The Carbon Cycle

Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.

Carbon Skeletons

Carbon Skeletons

Life on Earth is carbon-based, as all macromolecules that make up living organisms contain carbon atoms. All organic compounds have a carbon backbone. Each carbon atom is tetravalent and can bond with four other atoms, making it an extraordinarily flexible component of biological molecules. Because carbon’s valence electrons are stable, it rarely becomes an ion. As the carbon chain increases in length, structural modifications such as ring structures, double bonds, and branching side...

Carbonation Shrinkage

Carbonation Shrinkage

Atmospheric CO2 penetrates the concrete's pores and, in the presence of moisture, forms carbonic acid, which then reacts with calcium hydroxide in the hydrated cement, forming calcium carbonate. This process reduces the concrete's volume and is termed carbonation shrinkage.
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction...

Carbon-13 (¹³C) NMR: Overview

Carbon-13 (¹³C) NMR: Overview

Carbon-13 is a naturally occurring NMR-active isotope of carbon with a low natural abundance of 1.1%. In contrast, carbon-12 is the most abundant isotope of carbon with zero nuclear spin. Therefore, it is NMR inactive. The gyromagnetic ratio of carbon-13 is smaller than that of protons. As a result, carbon-13 resonance is about 6000 times weaker than proton resonance. For a given magnetic field strength, the resonance frequency of carbon-13 is about one-fourth of the resonance frequency for...