Detection of Escherichia coli, Pseudomonas aeruginosa, Salmonella paratyphoid B, and Shigella dysentery in live Bacillus licheniformis products using propidium monoazide-real-time-quantitative polymerase chain reaction

To eliminate the influences of excipients and interference of dead bacterial DNA on the detection of Escherichia coli, Pseudomonas aeruginosa, Salmonella paratyphoid B, and Shigella dysentery in live Bacillus licheniformis capsules, a polymerase chain reaction (PCR) method with high sensitivity and...

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Main Authors: Xiaoling Zheng, Yinhuan Wang, WanZi Gong, Qianru Cai, Jue Li, Jiequn Wu
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-09-01
Series:Frontiers in Microbiology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmicb.2022.996794/full
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author Xiaoling Zheng
Yinhuan Wang
WanZi Gong
WanZi Gong
Qianru Cai
Jue Li
Jiequn Wu
author_facet Xiaoling Zheng
Yinhuan Wang
WanZi Gong
WanZi Gong
Qianru Cai
Jue Li
Jiequn Wu
author_sort Xiaoling Zheng
collection DOAJ
description To eliminate the influences of excipients and interference of dead bacterial DNA on the detection of Escherichia coli, Pseudomonas aeruginosa, Salmonella paratyphoid B, and Shigella dysentery in live Bacillus licheniformis capsules, a polymerase chain reaction (PCR) method with high sensitivity and specificity was established. By combining bromide with propidium monoazide (PMA) -real-time quantitative PCR (qPCR) with microporous membrane filtration, excipients were removed, the filtrate was collected, and the bacteria were enriched using the centrifugal method. The optimal PMA working concentration, dark incubation time, and exposure time were determined. Specific E. coli, P. aeruginosa, S. paratyphoid B, and S. dysentery primers were selected to design different probes and a multiplex qPCR reaction system was established. The PMA-qPCR method was verified using different concentrations of dead and live bacteria. This method is efficient and accurate and can be widely applied to the detection of aforementioned pathogenic bacterial strains in live Bacillus licheniformis products.
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spelling doaj.art-d063644a650f456681765d63d1a80e302022-12-22T01:50:56ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2022-09-011310.3389/fmicb.2022.996794996794Detection of Escherichia coli, Pseudomonas aeruginosa, Salmonella paratyphoid B, and Shigella dysentery in live Bacillus licheniformis products using propidium monoazide-real-time-quantitative polymerase chain reactionXiaoling Zheng0Yinhuan Wang1WanZi Gong2WanZi Gong3Qianru Cai4Jue Li5Jiequn Wu6National Medical Products Administration (NMPA) Key Laboratory for Testing and Risk Warning of Pharmaceutical Microbiology, Key Laboratory of Drug Contacting Materials Quality Control of Zhejiang Provincial, Zhejiang Institute for Food and Drug Control, Hangzhou, ChinaNational Medical Products Administration (NMPA) Key Laboratory for Testing and Risk Warning of Pharmaceutical Microbiology, Key Laboratory of Drug Contacting Materials Quality Control of Zhejiang Provincial, Zhejiang Institute for Food and Drug Control, Hangzhou, ChinaNational Medical Products Administration (NMPA) Key Laboratory for Testing and Risk Warning of Pharmaceutical Microbiology, Key Laboratory of Drug Contacting Materials Quality Control of Zhejiang Provincial, Zhejiang Institute for Food and Drug Control, Hangzhou, ChinaSchool of Pharmacy, China Pharmaceutical University, Nanjing, ChinaCollaborative Innovation Center of Yangtze River Delta Region Green Pharmaceutical, Zhejiang University of Technology, Hangzhou, ChinaNational Medical Products Administration (NMPA) Key Laboratory for Testing and Risk Warning of Pharmaceutical Microbiology, Key Laboratory of Drug Contacting Materials Quality Control of Zhejiang Provincial, Zhejiang Institute for Food and Drug Control, Hangzhou, ChinaCollaborative Innovation Center of Yangtze River Delta Region Green Pharmaceutical, Zhejiang University of Technology, Hangzhou, ChinaTo eliminate the influences of excipients and interference of dead bacterial DNA on the detection of Escherichia coli, Pseudomonas aeruginosa, Salmonella paratyphoid B, and Shigella dysentery in live Bacillus licheniformis capsules, a polymerase chain reaction (PCR) method with high sensitivity and specificity was established. By combining bromide with propidium monoazide (PMA) -real-time quantitative PCR (qPCR) with microporous membrane filtration, excipients were removed, the filtrate was collected, and the bacteria were enriched using the centrifugal method. The optimal PMA working concentration, dark incubation time, and exposure time were determined. Specific E. coli, P. aeruginosa, S. paratyphoid B, and S. dysentery primers were selected to design different probes and a multiplex qPCR reaction system was established. The PMA-qPCR method was verified using different concentrations of dead and live bacteria. This method is efficient and accurate and can be widely applied to the detection of aforementioned pathogenic bacterial strains in live Bacillus licheniformis products.https://www.frontiersin.org/articles/10.3389/fmicb.2022.996794/fullpropidium monoazideqPCRprobioticsBacillus licheniformis live capsuleSalmonella paratyphoid BShigella dysentery
spellingShingle Xiaoling Zheng
Yinhuan Wang
WanZi Gong
WanZi Gong
Qianru Cai
Jue Li
Jiequn Wu
Detection of Escherichia coli, Pseudomonas aeruginosa, Salmonella paratyphoid B, and Shigella dysentery in live Bacillus licheniformis products using propidium monoazide-real-time-quantitative polymerase chain reaction
Frontiers in Microbiology
propidium monoazide
qPCR
probiotics
Bacillus licheniformis live capsule
Salmonella paratyphoid B
Shigella dysentery
title Detection of Escherichia coli, Pseudomonas aeruginosa, Salmonella paratyphoid B, and Shigella dysentery in live Bacillus licheniformis products using propidium monoazide-real-time-quantitative polymerase chain reaction
title_full Detection of Escherichia coli, Pseudomonas aeruginosa, Salmonella paratyphoid B, and Shigella dysentery in live Bacillus licheniformis products using propidium monoazide-real-time-quantitative polymerase chain reaction
title_fullStr Detection of Escherichia coli, Pseudomonas aeruginosa, Salmonella paratyphoid B, and Shigella dysentery in live Bacillus licheniformis products using propidium monoazide-real-time-quantitative polymerase chain reaction
title_full_unstemmed Detection of Escherichia coli, Pseudomonas aeruginosa, Salmonella paratyphoid B, and Shigella dysentery in live Bacillus licheniformis products using propidium monoazide-real-time-quantitative polymerase chain reaction
title_short Detection of Escherichia coli, Pseudomonas aeruginosa, Salmonella paratyphoid B, and Shigella dysentery in live Bacillus licheniformis products using propidium monoazide-real-time-quantitative polymerase chain reaction
title_sort detection of escherichia coli pseudomonas aeruginosa salmonella paratyphoid b and shigella dysentery in live bacillus licheniformis products using propidium monoazide real time quantitative polymerase chain reaction
topic propidium monoazide
qPCR
probiotics
Bacillus licheniformis live capsule
Salmonella paratyphoid B
Shigella dysentery
url https://www.frontiersin.org/articles/10.3389/fmicb.2022.996794/full
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