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Company: Thermo Fisher Scientific
Catalog#: 1201-2000
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Simple Time-lapse Imaging for Quantifying the Hydrostatic Production of Oxygenic Photogranules
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2020-10-05
[Abstract]  Oxygenic photogranules (OPGs) are dense, three-dimensional aggregates containing a syntrophic, light-driven microbial community. Their temporal and spatial development interests microbial ecologists working at the bioprocess engineering interface, as this knowledge can be used to optimize biotechnological applications, such as wastewater treatment and biomass valorization. The method presented here enables the high-throughput quantification of photogranulation. OPGs are produced from a loose sludge-like microbial matrix in hydrostatic batch cultures exposed to light. This matrix transforms into a consolidated, roughly spherical aggregate over time. Photogranulation is quantified by time-lapse imaging coupled to automated image analysis. This allows studying the development of many OPGs ... [摘要]  [摘要]氧气颗粒(OPG)是致密的三维聚集体,包含一个光合的营养菌,由微生物驱动。他们的时间和空间发展引起了微生物生态学家在生物过程工程界面上的兴趣,因为这些知识可用于优化生物技术应用,例如废水处理和生物质平衡。此处介绍的方法可实现光颗粒化的高通量定量。OPGs是从松散污泥状微生物矩阵产生水电静态分批培养暴露于光下。随着时间的推移,此矩阵将转换为合并的大致球形的聚合体。光粒化通过延时成像与自动图像分析相结合进行量化。这允许以全自动方式同时研究许多OPG的开发,以系统地测试哪些因素驱动了光颗粒化。该协议还可用于量化其他类型的(a)生物聚集。


[背景] OPG是致密的,大致球形的聚集体,直径为几毫米,包含异养和光养微生物的共生群落(Milferstedt等人,2017)。微生物生态学家研究光粒化以了解哪些因素驱动了三维(3D)结构的形成。这种知识可以被施加到转向生态系统功能向期望的功能,用于生物技术工艺,例如作为污水处理和生产增值产品(Abouhend等人,2018;基哈诺等人,2017) 。OPG可以由类似污泥的微生物基质生产,即废水处理厂曝气池中的活性污泥(Milferstedt等人,2017; Park and ...

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