Incidence and characterisation of aerobic spore-forming bacteria originating from dairy milk in Tunisia - Archive ouverte HAL Access content directly
Journal Articles International Journal of Dairy Technology Year : 2013

Incidence and characterisation of aerobic spore-forming bacteria originating from dairy milk in Tunisia

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Abstract

The purpose of this study was to evaluate the incidence and characterisation of aerobic spore-forming bacteria originating from dairy milk in Tunisia. The distribution of Bacillus species in raw milk, pasteurised milk and UHT milk were 47.5%, 27.5% and 25%, respectively. Seven Bacillus species, including Bacillus pumilus (10%), Bacillus subtilis (12.5%), Brevibacillus brevis (10%), Bacillus cereus (22.5%), Bacillus sphaericus (7.5%), Bacillus licheniformis (12.5%) and Bacillus sporothermodurans (25%) were identified in different milk samples. Bacillus cereus was predominant in raw and pasteurised milk. Although B.sporothermodurans was the predominant sporogenous micro-organism in UHT milk, B.cereus, B.sphaericus and B.licheniformis were also present. This study showed that there is a high degree of diversity, both phenotypic and genotypic, among Bacillus isolates from Tunisian milk and the persistence of spoilage risk in UHT milk.

Dates and versions

pasteur-01375109 , version 1 (02-10-2016)

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Chedia Aouadhi, Abderrazak Maaroufi, Slah Mejri. Incidence and characterisation of aerobic spore-forming bacteria originating from dairy milk in Tunisia. International Journal of Dairy Technology, 2013, 67 (1), pp.95 - 102. ⟨10.1111/1471-0307.12088⟩. ⟨pasteur-01375109⟩

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