Prevalence of Bacillus cereus s.l. in ultra-high temperature chocolate milk from selected milk manufacturers in Malaysia

Bacillus cereus is a major foodborne pathogen of great concern to the dairy industry owing to its resilient spores as well as the adverse effect of its toxins. At present, there is no informational study available to solve or pinpoint the UHT chocolate milk contamination issue in Malaysia. This work...

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Main Authors: A., Ubong, New, C. Y., Chai, L. C., Loo, Y. Y., M.A.R., Nor Khaizura, A. Y., Kayali, Son, R.
Format: Article
Published: Rynnye Lyan Resources 2020
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author A., Ubong
New, C. Y.
Chai, L. C.
Loo, Y. Y.
M.A.R., Nor Khaizura
A. Y., Kayali
Son, R.
author_facet A., Ubong
New, C. Y.
Chai, L. C.
Loo, Y. Y.
M.A.R., Nor Khaizura
A. Y., Kayali
Son, R.
author_sort A., Ubong
collection UPM
description Bacillus cereus is a major foodborne pathogen of great concern to the dairy industry owing to its resilient spores as well as the adverse effect of its toxins. At present, there is no informational study available to solve or pinpoint the UHT chocolate milk contamination issue in Malaysia. This work aimed to investigate the prevalence and contamination level of B. cereus s.l. in UHT chocolate milk and to suggest the appropriate solution for the issue. In the present study, B. cereus s.l. prevalence and contamination level in individually packed UHT chocolate milk from processing factories was evaluated. The prevalence and concentration of B. cereus s.l. were determined via MPN-PCR (Most Probable Number-Polymerase Chain Reaction) assay. Results showed that 31.11% from 220 of UHT chocolate milk tested contained Bacillus spp.; of this Bacillus spp. positive samples, 24.30% were also positive for B. cereus s.l. with concentration ranging from less than 3 to more than 1100 MPN/mL. Findings from this study highlighted the possibility of UHT chocolate milk as a potential source of B. cereus s.l. infection. Therefore, findings emphasized the needs to revise, monitor and improve UHT sterilization process to reduce infection risk. Furthermore, it is also essential to maintain the hygiene to minimize initial microbial load and contamination of UHT chocolate milk, beginning from production to retail.
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institution Universiti Putra Malaysia
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spelling upm.eprints-872742023-09-12T02:27:36Z http://psasir.upm.edu.my/id/eprint/87274/ Prevalence of Bacillus cereus s.l. in ultra-high temperature chocolate milk from selected milk manufacturers in Malaysia A., Ubong New, C. Y. Chai, L. C. Loo, Y. Y. M.A.R., Nor Khaizura A. Y., Kayali Son, R. Bacillus cereus is a major foodborne pathogen of great concern to the dairy industry owing to its resilient spores as well as the adverse effect of its toxins. At present, there is no informational study available to solve or pinpoint the UHT chocolate milk contamination issue in Malaysia. This work aimed to investigate the prevalence and contamination level of B. cereus s.l. in UHT chocolate milk and to suggest the appropriate solution for the issue. In the present study, B. cereus s.l. prevalence and contamination level in individually packed UHT chocolate milk from processing factories was evaluated. The prevalence and concentration of B. cereus s.l. were determined via MPN-PCR (Most Probable Number-Polymerase Chain Reaction) assay. Results showed that 31.11% from 220 of UHT chocolate milk tested contained Bacillus spp.; of this Bacillus spp. positive samples, 24.30% were also positive for B. cereus s.l. with concentration ranging from less than 3 to more than 1100 MPN/mL. Findings from this study highlighted the possibility of UHT chocolate milk as a potential source of B. cereus s.l. infection. Therefore, findings emphasized the needs to revise, monitor and improve UHT sterilization process to reduce infection risk. Furthermore, it is also essential to maintain the hygiene to minimize initial microbial load and contamination of UHT chocolate milk, beginning from production to retail. Rynnye Lyan Resources 2020-08 Article PeerReviewed A., Ubong and New, C. Y. and Chai, L. C. and Loo, Y. Y. and M.A.R., Nor Khaizura and A. Y., Kayali and Son, R. (2020) Prevalence of Bacillus cereus s.l. in ultra-high temperature chocolate milk from selected milk manufacturers in Malaysia. Food Research, 4 (4). 982 - 990. ISSN 2550-2166 http://www.myfoodresearch.com 10.26656/fr.2017.4(4).417
spellingShingle A., Ubong
New, C. Y.
Chai, L. C.
Loo, Y. Y.
M.A.R., Nor Khaizura
A. Y., Kayali
Son, R.
Prevalence of Bacillus cereus s.l. in ultra-high temperature chocolate milk from selected milk manufacturers in Malaysia
title Prevalence of Bacillus cereus s.l. in ultra-high temperature chocolate milk from selected milk manufacturers in Malaysia
title_full Prevalence of Bacillus cereus s.l. in ultra-high temperature chocolate milk from selected milk manufacturers in Malaysia
title_fullStr Prevalence of Bacillus cereus s.l. in ultra-high temperature chocolate milk from selected milk manufacturers in Malaysia
title_full_unstemmed Prevalence of Bacillus cereus s.l. in ultra-high temperature chocolate milk from selected milk manufacturers in Malaysia
title_short Prevalence of Bacillus cereus s.l. in ultra-high temperature chocolate milk from selected milk manufacturers in Malaysia
title_sort prevalence of bacillus cereus s l in ultra high temperature chocolate milk from selected milk manufacturers in malaysia
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