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Non-thermal Technologies as Alternative Methods for Saccharomyces cerevisiae Inactivation in Liquid Media: a Review

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Abstract

The ongoing demand for high-quality processed foods which would preserve their natural and fresh-like characteristics has awakened a growing interest in non-thermal technologies. Thanks to their ability to inactivate microorganisms under mild conditions, these technologies avoid drawbacks usually attributed to the use of thermal treatments, such as nutrient loss, off-flavors, and changes in the food’s physical and chemical properties. Saccharomyces cerevisiae (S. cerevisiae) mainly causes spoilage in liquid foods with high sugar content and low pH values. Thus, it is one of the most undesirable microorganisms in the food industry since its presence may lead to important economic losses. This review offers an exhaustive compilation and critical revision of research conducted in the field of S. cerevisiae inactivation in liquid media, emphasizing the use of non-thermal technologies, such as high pressure processing, high-power ultrasound, supercritical carbon dioxide, pulsed electric fields, and others. Likewise, using these technologies in combination (the hurdle approach) may enhance their individual effect and significantly reduce the treatment time needed to obtain a given level of S. cerevisiae inactivation. In general, non-thermal technologies are proving to be able to successfully inactivate S. cerevisiae in liquid media. However, the need for further investigation and complete industrial implementation is made evident throughout this review.

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Acknowledgments

This work was supported by the UGTO-PTC-557 project financed by PRODEP-Mexico. The author I. Paniagua-Martínez acknowledges the Consejo Nacional de Ciencia y Tecnología Mexico (CONACyT/N.218273) for the scholarship awarded to her as a PhD Student. The authors would also like to thank Stanislav Mulík, MA (Applied Linguistics), for his valuable contribution in revising the English version of this paper.

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Correspondence to César Ozuna.

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Paniagua-Martínez, I., Ramírez-Martínez, A., Serment-Moreno, V. et al. Non-thermal Technologies as Alternative Methods for Saccharomyces cerevisiae Inactivation in Liquid Media: a Review. Food Bioprocess Technol 11, 487–510 (2018). https://doi.org/10.1007/s11947-018-2066-9

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  • DOI: https://doi.org/10.1007/s11947-018-2066-9

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