Pasteurization of Beer by Non-Thermal Technologies

نویسندگان

چکیده

The pasteurization of beer occurs at the end industrial production, after fermentation. Generally, a mild thermal process (60°C) is employed aiming to inactivate fermenting yeast and potential spoilage microorganisms, thus extending shelf-life room temperature. heat treatment negatively affects original freshness flavor. In this study, using emerging non-thermal technologies, namely, high-pressure processing (HPP), pulsed electric fields (PEF), ultrasound (US), was reviewed, including effect on microbial inactivation quality. combination methods with for more efficient also reviewed. All technologies caused in beer. However, temperature HPP most method, delivering minimum 15 PU (pasteurization units) seconds (e.g., 300 MPa 27 s), as opposed TS treatments which required several minutes, while causing negative impact sensory. As expected, PEF + higher than alone, ascospores were resistant vegetative cells. Non-thermal (35–45 kV/cm) 3–5.8 log reductions bacteria. Studies assisted combined low (50–55°C) showed times magnitude microseconds 0.5–2 min (depending temperature) pasteurization. With respect these quality, HPP, thermosonication (TS), high pressure homogenization (HPH), dense phase CO 2 (DPCD) revealed less sensory properties, better retaining beer, compared thermally processed beers.

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ژورنال

عنوان ژورنال: Frontiers in food science and technology

سال: 2022

ISSN: ['2674-1121']

DOI: https://doi.org/10.3389/frfst.2021.798676