Methods for detection of Bacillus sp., B. cereus, and B. licheniformis in raw milk

Totally 75 raw milk samples were analysed with the methods employing the media compared - MYPA, PEMBA, BrillianceTM Bacillus cereus agar, and HiCrome Bacillus agar. The reference method with MYPA seems to be the most suitable for dairy plants laboratories because there is only low risk of mistaken i...

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Main Authors: Irena NĚMEČKOVÁ, Kateřina SOLICHOVÁ, Petr ROUBAL, Barbora UHROVÁ, Eva ŠVIRÁKOVÁ
Format: Article
Language:English
Published: Czech Academy of Agricultural Sciences 2011-12-01
Series:Czech Journal of Food Sciences
Subjects:
Online Access:https://cjfs.agriculturejournals.cz/artkey/cjf-201110-0011_methods-for-detection-of-bacillus-sp-b-cereus-and-b-licheniformis-in-raw-milk.php
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author Irena NĚMEČKOVÁ
Kateřina SOLICHOVÁ
Petr ROUBAL
Barbora UHROVÁ
Eva ŠVIRÁKOVÁ
author_facet Irena NĚMEČKOVÁ
Kateřina SOLICHOVÁ
Petr ROUBAL
Barbora UHROVÁ
Eva ŠVIRÁKOVÁ
author_sort Irena NĚMEČKOVÁ
collection DOAJ
description Totally 75 raw milk samples were analysed with the methods employing the media compared - MYPA, PEMBA, BrillianceTM Bacillus cereus agar, and HiCrome Bacillus agar. The reference method with MYPA seems to be the most suitable for dairy plants laboratories because there is only low risk of mistaken identity. However, the samples containing miscellaneous micro-flora should be heat-inactivated before plating. Both positive and negative strains (totally 132) were isolated. Twelve strains, which could cause problems in the evaluation of the plates, were selected and identified by phenotyping and by PCR methods for Bacillus sp., B. cereus, and B. licheniformis. The PCR methods differed in their selectivity within particular bacilli group, within genera Bacillus, and within raw milk microflora.
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spelling doaj.art-b528c38e86d945a88101184d22db09a22023-02-23T03:27:40ZengCzech Academy of Agricultural SciencesCzech Journal of Food Sciences1212-18001805-93172011-12-0129Special IssueS55S6010.17221/313/2011-CJFScjf-201110-0011Methods for detection of Bacillus sp., B. cereus, and B. licheniformis in raw milkIrena NĚMEČKOVÁ0Kateřina SOLICHOVÁ1Petr ROUBAL2Barbora UHROVÁ3Eva ŠVIRÁKOVÁ4Dairy Research Institute Ltd., Prague, Czech RepublicDepartment of Dairy and Fat Technology, Institute of Chemical Technology, Prague, Czech RepublicMILCOM Company Limited, Prague, Czech RepublicMILCOM Company Limited, Prague, Czech RepublicDepartment of Dairy and Fat Technology, Institute of Chemical Technology, Prague, Czech RepublicTotally 75 raw milk samples were analysed with the methods employing the media compared - MYPA, PEMBA, BrillianceTM Bacillus cereus agar, and HiCrome Bacillus agar. The reference method with MYPA seems to be the most suitable for dairy plants laboratories because there is only low risk of mistaken identity. However, the samples containing miscellaneous micro-flora should be heat-inactivated before plating. Both positive and negative strains (totally 132) were isolated. Twelve strains, which could cause problems in the evaluation of the plates, were selected and identified by phenotyping and by PCR methods for Bacillus sp., B. cereus, and B. licheniformis. The PCR methods differed in their selectivity within particular bacilli group, within genera Bacillus, and within raw milk microflora.https://cjfs.agriculturejournals.cz/artkey/cjf-201110-0011_methods-for-detection-of-bacillus-sp-b-cereus-and-b-licheniformis-in-raw-milk.phpcultivation methodchromogenic mediumgenera-specific pcrspecies-specific pcr
spellingShingle Irena NĚMEČKOVÁ
Kateřina SOLICHOVÁ
Petr ROUBAL
Barbora UHROVÁ
Eva ŠVIRÁKOVÁ
Methods for detection of Bacillus sp., B. cereus, and B. licheniformis in raw milk
Czech Journal of Food Sciences
cultivation method
chromogenic medium
genera-specific pcr
species-specific pcr
title Methods for detection of Bacillus sp., B. cereus, and B. licheniformis in raw milk
title_full Methods for detection of Bacillus sp., B. cereus, and B. licheniformis in raw milk
title_fullStr Methods for detection of Bacillus sp., B. cereus, and B. licheniformis in raw milk
title_full_unstemmed Methods for detection of Bacillus sp., B. cereus, and B. licheniformis in raw milk
title_short Methods for detection of Bacillus sp., B. cereus, and B. licheniformis in raw milk
title_sort methods for detection of bacillus sp b cereus and b licheniformis in raw milk
topic cultivation method
chromogenic medium
genera-specific pcr
species-specific pcr
url https://cjfs.agriculturejournals.cz/artkey/cjf-201110-0011_methods-for-detection-of-bacillus-sp-b-cereus-and-b-licheniformis-in-raw-milk.php
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