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Thermal treatment of skim milk concentrates in a novel shear-heating device: Reduction of thermophilic spores and physical properties

Wedel, C; Wunsch, A; Wenning, M; Dettling, A; Kayser, K-Heinz; Lehner, W-Dieter; Hinrichs, Jörg

Food Research International 107: 19-26

2018

ISSN/ISBN: 0963-9969
DOI: 10.1016/j.foodres.2018.02.005
Accession: 065142000
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Endospores of thermophilic bacilli are a major concern for producers of dairy powders. In this study, we heat treated 10 different spore suspensions at 110 °C in skim milk and skim milk concentrate (36% dry matter) of the species Geobacillus stearothermophilus (10 min) and Anoxybacillus flavithermus (5 min) in a new shear-heating device. The highest log reduction in skim milk concentrate was 3.5. The death behavior of the spores was strain dependent.

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Related References

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