Voglauer Eva M, Zwirzitz Benjamin, Thalguter Sarah, Selberherr Evelyne, Wagner Martin, Rychli Kathrin
FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Tulln, Austria.
Unit of Food Microbiology, Institute for Food Safety, Food Technology and Veterinary Public Health, University of Veterinary Medicine Vienna, Vienna, Austria.
Front Microbiol. 2022 Feb 14;13:832213. doi: 10.3389/fmicb.2022.832213. eCollection 2022.
Safe and hygienic water distribution is essential for maintaining product quality and safety. It is known that biofilms alter the appearance and microbial quality of water along the distribution chain. Yet, biofilms in water hoses throughout the food processing environment have not been investigated in detail. Here, microbial communities from water hoses and other environmental sites in contact with water, in addition to the source water itself, were studied in the meat processing environment. Biofilms were present in all water hoses as determined by the presence of bacterial DNA and biofilm matrix components (carbohydrates, extracellular DNA, and proteins). The microbial community of the biofilms was dominated by , represented mainly by and . Moreover, genera that are associated with an intracellular lifestyle (e.g., and ) were present. Overall, the microbial community of biofilms was less diverse than the water microbial community, while those from the different sample sites were distinct from each other. Indeed, only a few phyla were shared between the water hose biofilm and the source water or associated environmental samples. This study provides first insights towards understanding the microbiota of water hose biofilms in the food processing environment.
安全卫生的水分配对于维持产品质量和安全至关重要。众所周知，生物膜会改变水在分配链中的外观和微生物质量。然而，食品加工环境中整个水管系统里的生物膜尚未得到详细研究。在此，除了原水本身之外，还对肉类加工环境中水管以及其他与水接触的环境位点的微生物群落进行了研究。通过细菌DNA以及生物膜基质成分（碳水化合物、细胞外DNA和蛋白质）的存在确定，所有水管中均存在生物膜。生物膜的微生物群落以 为主导，主要由 和 代表。此外，还存在与细胞内生活方式相关的属（例如 和 ）。总体而言，生物膜的微生物群落比水微生物群落的多样性更低，而来自不同采样位点的生物膜彼此不同。实际上，水管生物膜与原水或相关环境样本之间仅共享少数几个门。本研究为理解食品加工环境中水管生物膜的微生物群提供了初步见解。
