Inactivation of microorganisms on granular materials : reduction of Bacillus amyloliquefaciens endospores on wheat grains in a low pressure plasma circulating fluidized bed reactor

Butscher, Denis; Schlup, Tina; Roth, Christian; Müller-Fischer, Nadina; Gantenbein-Demarchi, Corinne; von Rohr, Philipp Rudolf

doi:10.1016/j.jfoodeng.2015.03.009

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Inactivation of microorganisms on granular materials : reduction of Bacillus amyloliquefaciens endospores on wheat grains in a low pressure plasma circulating fluidized bed reactor
Authors:	Butscher, Denis Schlup, Tina Roth, Christian Müller-Fischer, Nadina Gantenbein-Demarchi, Corinne von Rohr, Philipp Rudolf
DOI:	10.1016/j.jfoodeng.2015.03.009
Published in:	Journal of Food Engineering
Volume(Issue):	159
Page(s):	48
Pages to:	56
Issue Date:	Aug-2015
Publisher / Ed. Institution:	Elsevier
ISSN:	0260-8774
Language:	English
Subjects:	Inactivation; Bacillus amyloliquefaciens endospores; Wheat grain; Low pressure plasma
Subject (DDC):	664: Food technology
Abstract:	Cereal grains can contain high bacterial loads so that a microbial reduction step is desired. Therefore, a low pressure circulating fluidized bed reactor for the treatment of granular materials was constructed, and an argon/oxygen plasma was ignited in the riser tube by an inductively coupled RF-source. With this setup, the viability of Bacillus amyloliquefaciens endospores, artificially deposited on wheat grains, could be reduced by over two logarithmic units within 30 s of effective treatment time. In addition, the influence of plasma power input and variation in oxygen gas admixture was studied. Based on energy influx measurements and the solution of the heat equation, a thermal inactivation effect and the thermal degradation of wheat grains could be excluded. No negative effects of plasma treatment on wheat grain properties were detected in flour and dough analyses.
URI:	https://digitalcollection.zhaw.ch/handle/11475/6517
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	Life Sciences and Facility Management
Organisational Unit:	Institute of Food and Beverage Innovation (ILGI)
Appears in collections:	Publikationen Life Sciences und Facility Management

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Butscher, D., Schlup, T., Roth, C., Müller-Fischer, N., Gantenbein-Demarchi, C., & von Rohr, P. R. (2015). Inactivation of microorganisms on granular materials : reduction of Bacillus amyloliquefaciens endospores on wheat grains in a low pressure plasma circulating fluidized bed reactor. Journal of Food Engineering, 159, 48–56. https://doi.org/10.1016/j.jfoodeng.2015.03.009

Butscher, D. et al. (2015) ‘Inactivation of microorganisms on granular materials : reduction of Bacillus amyloliquefaciens endospores on wheat grains in a low pressure plasma circulating fluidized bed reactor’, Journal of Food Engineering, 159, pp. 48–56. Available at: https://doi.org/10.1016/j.jfoodeng.2015.03.009.

D. Butscher, T. Schlup, C. Roth, N. Müller-Fischer, C. Gantenbein-Demarchi, and P. R. von Rohr, “Inactivation of microorganisms on granular materials : reduction of Bacillus amyloliquefaciens endospores on wheat grains in a low pressure plasma circulating fluidized bed reactor,” Journal of Food Engineering, vol. 159, pp. 48–56, Aug. 2015, doi: 10.1016/j.jfoodeng.2015.03.009.

BUTSCHER, Denis, Tina SCHLUP, Christian ROTH, Nadina MÜLLER-FISCHER, Corinne GANTENBEIN-DEMARCHI und Philipp Rudolf VON ROHR, 2015. Inactivation of microorganisms on granular materials : reduction of Bacillus amyloliquefaciens endospores on wheat grains in a low pressure plasma circulating fluidized bed reactor. Journal of Food Engineering. August 2015. Bd. 159, S. 48–56. DOI 10.1016/j.jfoodeng.2015.03.009

Butscher, Denis, Tina Schlup, Christian Roth, Nadina Müller-Fischer, Corinne Gantenbein-Demarchi, and Philipp Rudolf von Rohr. 2015. “Inactivation of Microorganisms on Granular Materials : Reduction of Bacillus Amyloliquefaciens Endospores on Wheat Grains in a Low Pressure Plasma Circulating Fluidized Bed Reactor.” Journal of Food Engineering 159 (August): 48–56. https://doi.org/10.1016/j.jfoodeng.2015.03.009.

Butscher, Denis, et al. “Inactivation of Microorganisms on Granular Materials : Reduction of Bacillus Amyloliquefaciens Endospores on Wheat Grains in a Low Pressure Plasma Circulating Fluidized Bed Reactor.” Journal of Food Engineering, vol. 159, Aug. 2015, pp. 48–56, https://doi.org/10.1016/j.jfoodeng.2015.03.009.