Predominance of Tetragenococcus halophilus as the cause of sugar thick juice degradation

Food Microbiology
Annelies JustéKris A Willems

Abstract

The industrial storage of sugar thick juice was simulated on a laboratory scale. Terminal Restriction Fragment Length Polymorphism (T-RFLP) analysis and the application of Clone Libraries in parallel with classical microbiology were used to study the bacterial diversity and all revealed a dominance (>99%) of Tetragenococcus halophilus during storage. The degradation of thick juice correlated with the appearance of L-lactic acid and high concentrations of T. halophilus. In addition, pure cultures of T. halophilus induced degradation of sterile thick juice. A specific PCR was developed to detect T. halophilus and industrial thick juice samples from Belgium, Germany and France all contained T. halophilus, suggesting a consistent association of this organism with thick juice. T. halophilus has been known only as a halophile thus far, and this report is the first to show an association of this organism with a sugar-rich environment.

Citations

Feb 18, 2011·Applied Biochemistry and Biotechnology·Fredy MoralesHumberto Hernández-Sánchez
Dec 17, 2014·The ISME Journal·Andrew StevensonJohn E Hallsworth
Jul 16, 2008·Food Microbiology·Annelies JustéKris A Willems
Jul 22, 2014·Environmental Microbiology·Bart LievensHans Jacquemyn

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