Institute of Biomolecular Chemistry of Consiglio Nazionale delle Ricerche, 80078, Pozzuoli, Naples, Italy.
Institute for Polymers, Composites and Biomaterials of Consiglio Nazionale delle Ricerche, 80078, Pozzuoli, Naples, Italy.
Sci Rep. 2019 Feb 7;9(1):1668. doi: 10.1038/s41598-018-38187-x.
For the first time, we propose the use of an extremophilic bacterium to remove nitrate salt efflorescence from the surfaces of stone samples. A haloalkaliphilic bacterium was selected "ad hoc" for its ability to reduce nitrates; i.e. Halomonas campaniensis sp. nov., strain 5AG (DSM 15293, ATCC BAA-966). Quantitative monitoring of nitrate content, on untreated and treated surfaces of stone samples artificially enriched with nitrate, as a function of incubation/treatment time, was carried out by molecular spectroscopy. The results obtained reveal the good performance of Halomonas campaniensis bacterium in decreasing nitrate concentration on stone surfaces both in a controlled laboratory environment for temperature and relative humidity and in a real outdoor environmental conditions.
我们首次提出利用极端嗜盐菌从石材表面去除硝酸盐盐霜。选择一株耐盐菌“专门”用于还原硝酸盐，即新种嗜盐单胞菌 Halomonas campaniensis，菌株 5AG（DSM 15293，ATCC BAA-966）。通过分子光谱法对未经处理和经处理的人工富硝酸盐的石材样品表面的硝酸盐含量进行定量监测，作为孵育/处理时间的函数。结果表明，在温度和相对湿度可控的实验室环境中和真实的室外环境条件下，Halomonas campaniensis 细菌在降低石材表面硝酸盐浓度方面表现良好。
