Thermophilic bacilli and their importance in dairy processing

Burgess, Sara; Lindsay, D.; Flint, Steve

doi:10.1016/j.ijfoodmicro.2010.09.027

Cited by 273 publications

(253 citation statements)

References 116 publications

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“…This study shows the preponderant impact of the nature of the filtered fluid or the combination of treatments, like heating (milk pasteurization) (Burgess et al 2010), bleaching (whey discoloration), or ultrafiltration of the feed (bacteria removal before filtration). The bacterial community found on pasteurized milk processing membranes had the closest similarity to natural raw milk microflora of the province of Quebec and to pasteurized cheese ecosystems, in comparison to the other fluids filtered (Rasolofo et al 2010;Wolfe et al 2014).…”

Section: The Effect Of Operating Conditionsmentioning

confidence: 91%

“…This led to the growth of more resistant spore-forming bacteria (Bacillus sp., Brevibacillus sp., Paenibacillus sp., and Alicyclobacillus sp.) (Burgess et al 2010). Interestingly, the filtrations conducted in these two plants were performed at different operating temperatures (48°C for E2UF-bW and <20°C for F3UF-bW), which may have modulated, to some extent, the composition of these biofilms.…”

Section: The Effect Of Operating Conditionsmentioning

confidence: 99%

“…Anoxybacillus sp. was first identified in extreme environments such as hot springs and is often found as a single-species biofilm in milk powder processing lines (Burgess et al 2010). Its presence on D1NF-P could be due to its intrinsic resistance to alkaline conditions similar to those found during industrial CIP cleaning.…”

Section: The Effect Of Operating Conditionsmentioning

confidence: 99%

“…The pioneer bacteria grow and modify surface properties, producing extra polymeric substances (EPS) that affect membrane performance and permit recruitment of other bacteria as the biofilm matures (LappinScott and Costerton 1989;Ivnitsky et al 2007;Vanysacker et al 2014a). In the dairy industry, biofouling may also result in serious quality issues for the filtered fluid and subsequent dairy products because of the presence of spore-forming or pathogenic bacteria on membranes (Burgess et al 2010;Anand et al 2014) and their concurrent microbial enzyme production (Raats et al 2011;Teh et al 2014). However, only a few studies described the microbial composition of biofilm detected on dairy processing membranes, and they have been limited to microscopy (Hassan et al 2010) or culture-based observations (Tang et al 2009;Tang et al 2010;Anand et al 2012;Anand and Singh 2013).…”

Section: Introductionmentioning

confidence: 99%

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A sequencing approach targeting the 16S rRNA gene unravels the biofilm composition of spiral-wound membranes used in the dairy industry

Chamberland

Lessard

Doyen

et al. 2016

Dairy Sci. & Technol.

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Few data are available concerning the composition of biofilms found at the surface of filtration membranes, which, to some extent, explains the long-term failure of numerous strategies developed to control biofouling. This preliminary study intended to design a metagenomic tool targeting the 16S rRNA gene in order to unravel a general portrait of bacterial communities found on spiral-wound membranes used in the dairy industry. A total of seven spiral-wound membrane elements (ultrafiltration, nanofiltration, or reverse osmosis) at the end of their useful lifetimes were collected from different dairy plants. Targeted analysis of the 16S rRNA genes of the metagenome extracted from the membranes revealed their bacterial diversity via high-throughput sequencing technology (Miseq, Illumina). It was found that the nature of the filtered fluid (milk, whey, water) explained 58.6 % of the variance observed between communities found on membranes. Treatments applied on dairy fluids (milk pasteurization, whey bleaching or whey ultrafiltration) induced a selective pressure that affected the diversity of bacterial communities found on membranes and the proportions of spore-former bacteria among them. This work provides the first complete bacterial portrait of the biofilm composition of spiral-wound membranes used in the dairy industry. It suggests that the nature of the filtered fluid and potentially filtration Dairy Sci. & Technol. (2017)

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Section: The Effect Of Operating Conditionsmentioning

confidence: 91%

Section: The Effect Of Operating Conditionsmentioning

confidence: 99%

Section: The Effect Of Operating Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A sequencing approach targeting the 16S rRNA gene unravels the biofilm composition of spiral-wound membranes used in the dairy industry

Chamberland

Lessard

Doyen

et al. 2016

Dairy Sci. & Technol.

View full text Add to dashboard Cite

show abstract

“…The spore's resistance and survival is attributed to this dormancy. Spores can withstand exposure to pH changes, radiation, heating and freezing, desiccation and humidity, as well as chemical agents and disinfectants (Setlow, 2003;Setlow, 2005;Burgess, 2010). This resistance is engendered by the anatomy of the spore.…”

Section: Bacillus Endosporesmentioning

confidence: 99%