News Column

Investigators from Chinese Academy of Science Target Environmental Research

May 20, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- New research on Environmental Research is the subject of a report. According to news originating from Beijing, People's Republic of China, by NewsRx correspondents, research stated, "To understand the impacts of different plumbing materials on long-term biofilm formation in water supply system, we analyzed microbial community compositions in the bulk water and biofilms on faucets with two different materials-polyvinyl chloride (PVC) and cast iron, which have been frequently used for more than10 years. Pyrosequencing was employed to describe both bacterial and eukaryotic microbial compositions."

Our news journalists obtained a quote from the research from the Chinese Academy of Science, "Bacterial communities in the bulk water and biofilm samples were significantly different from each other. Specific bacterial populations colonized on the surface of different materials. Hyphomicrobia and corrosion associated bacteria, such as Acidithiobacillus spp., Aquabacterium spp., Limnobacter thiooxidans, and Thiocapsa spp., were the most dominant bacteria identified in the PVC and cast iron biofilms, respectively, suggesting that bacterial colonization on the material surfaces was selective. Mycobacteria and Legionella spp. were common potential pathogenic bacteria occurred in the biofilm samples, but their abundance was different in the two biofilm bacterial communities. In contrast, the biofilm samples showed more similar eukaryotic communities than the bulk water. Notably, potential pathogenic fungi, i.e., Aspergillus spp. and Candida parapsilosis, occurred in similar abundance in both biofilms."

According to the news editors, the research concluded: "These results indicated that microbial community, especially bacterial composition was remarkably affected by the different pipe materials (PVC and cast iron)."

For more information on this research see: Molecular analysis of long-term biofilm formation on PVC and cast iron surfaces in drinking water distribution system. Journal of Environmental Sciences-China, 2014;26(4):865-874. Journal of Environmental Sciences-China can be contacted at: Science Press, 16 Donghuangchenggen North St, Beijing 100717, Peoples R China (see also Environmental Research).

The news correspondents report that additional information may be obtained from R.Y. Liu, Chinese Academy Sci, Res Center Ecoenvironm Sci, Beijing 100085, People's Republic of China. Additional authors for this research include J.G. Zhu, Z.S. Yu, D. Joshi, H.X. Zhang, W.F. Lin and M. Yang.

Keywords for this news article include: Asia, Beijing, Environmental Research, People's Republic of China

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Source: Life Science Weekly

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