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Study on Identification of Salmonella in Textiles with LAMP-MALDI TOF MS
關鍵詞：salmonella inva gene lamp maldi
摘要：Objectives To establish a rapid analytical procedure for salmonella in textiles by LAMP in combination with MALDI TOF MS. The gene sequence invA of salmonella is specific to pathogenic strains. Based on its characteristic,a set of LAMP primer for salmonella is designed. If the amplification result is suspicious or positive,the strains are separated and the determination is rapidly performed through MALDI TOF MS technique. Methods About 70 reference strains closely related to the textiles and public health are selected to perform the specificity study(Salmonella enterica,Salmonella tyhimurium,Salmonella choleraesuis,Salmonella paratyphi A etc.);The bacterium solution of salmonella is diluted to different gradients for the sensitivity study. Results The results show this method is appropriately specific and sensitive,the limit of detection up to 4.6 CFU/mL. Conclusions The procedure is a new technique to detect salmonella in textiles.
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