氧的进化来自于被困在硬生物涂层中的极端友好的蓝藻细菌
Simone Krings1, Yuxiu Chen2, Joseph L Keddie2
1Department of Microbial Sciences, School of Biosciences, University of Surrey, Guildford, Surrey, United Kingdom.
Microbiology spectrum
|September 25, 2023
概括
这项研究开发了新的生物涂料,使用极端的蓝藻细菌用于碳捕获和氧气生产. 这些"活着的油漆"为生物技术应用提供了一种可持续的,节水的方法.
科学领域:
- 生物技术是生物技术.
- 微生物学 微生物学
- 材料科学 材料科学 材料科学
背景情况:
- 生物涂料使聚合物涂料中的活力细菌无法移动,用于碳捕获和生物燃料生产等应用.
- 越来越需要节水的微生物应用,以减轻干燥压力.
研究的目的:
- 在机械坚固的生物涂层中固定蓝藻细菌.
- 为了比较这些生物涂层中的不同蓝藻细菌物种的活力和光合作用活性.
- 评估极端友好的蓝藻细菌在碳捕获和氧气进化的生物涂料中的长期性能.
主要方法:
- 蓝藻细菌被固定在水性聚合物 (乳) 生物涂层中.
- 生物涂料是通过加热至37°C而形成的,随后是干燥和再水.
- 使用腺三酸盐 (ATP) 测定来评估生存能力,并测量氧气演变/消耗.
主要成果:
- 这种病原体是Synechococcus sp. 在干燥后PCC 7002是不可活的; Synechocystis sp. PCC 6803幸存下来,但没有进化氧气.
- 克罗科科西迪奥普西斯古巴纳PCC 7433,一个极端动物,幸存下来,进行光合作用,并捕获碳,以高达0.4g/g/day的速度进化氧气.
- 一个月的持续溶解氧测量显示持续活动没有下降.
结论:
- 极端友好的蓝藻细菌,特别是Chroococcidiopsis cubana PCC 7433,在生物涂料中非常有效,能够在干燥和再水处理中存活下来.
- 这些生物涂料为持续的碳捕获和氧气生产提供了有希望的节水方法.
- 在生物涂料中使用极端的这一开创性应用为废水处理和生物燃料生产开辟了道路.
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