Dairy strains of Anoxybacillus flavithermus inhibit lipase production by Geobacillus stearothermophilus

Sadiq, Faizan Ahmed ORCID: https://orcid.org/0000-0003-1596-4155 and Flint, Steve 2021. Dairy strains of Anoxybacillus flavithermus inhibit lipase production by Geobacillus stearothermophilus. International Dairy Journal 119 , 104996. 10.1016/j.idairyj.2021.104996

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Abstract

In this study, we demonstrated lipase inhibition in two genetically distinct dairy strains of Geobacillus stearothermophilus caused by two dairy strains of Anoxybacillus flavithermus as a result of their growth in coculture, where no effect on the growth of G. stearothermophilus strains was noted. Further investigation showed that cell-free supernatant (CFS) of A. flavithermus strains has potential to completely inhibit bacterial ability to produce lipases, rather than affecting the activity of lipases, by all strains of G. stearothermophilus by an unknown mechanism and possibly due to the substance that became completely inactivated after heating the CFS at 100 °C for 30 and 60 min. The same lipase inhibition effect of CFS from the A. flavithermus strains was confirmed in Pseudomonas aeruginosa ATCC 10145 as well. This study reports a novel process, yet unknown, by which A. flavithermus strains are able to inhibit lipase production in two distantly related species.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Dentistry
Publisher:	Elsevier
ISSN:	0958-6946
Last Modified:	08 May 2024 09:45
URI:	https://orca.cardiff.ac.uk/id/eprint/168613

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