Sensitivity of Salmonella Typhimurium to nisin in vitro and in orange juice under refrigeration.

IF 2.2 4区生物学 Q3 MICROBIOLOGY

Fems Microbiology Letters Pub Date : 2024-01-09 DOI:10.1093/femsle/fnae031

Carla Gabriela Fernandes da Silva, Flávio Santos Lopes, Álissy Fernanda Cardoso Vieira Valois, Cláudia Vieira Prudêncio

引用次数: 0

Abstract

The influence of environmental factors on Salmonella sensitivity to nisin in vitro and in refrigerated orange juice were investigated. Nisin activity was observed in the different conditions, but the highest efficiency was achieved at lower pH (4.0) and with higher bacteriocin concentration (174 µM). Moreover, the bactericidal action was directly proportional to the incubation period. When tested in orange juice, nisin caused a reduction of up to 4.05 logarithm cycles in the Salmonella population. So, environmental factors such as low pH and low temperature favored the sensitization of Salmonella cells to the bactericidal action of nisin. Therefore, this may represent an alternative to control Salmonella in refrigerated foods.

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体外和冷藏橙汁中的鼠伤寒沙门氏菌对尼生素的敏感性。

研究了环境因素对体外和冷藏橙汁中沙门氏菌对尼生素敏感性的影响。在不同的条件下都能观察到尼生素的活性，但在较低的 pH 值（4.0）和较高的细菌素浓度（174 µM）下效率最高。此外，杀菌作用与培养时间成正比。在橙汁中进行试验时，尼生素能使沙门氏菌数量减少达 4.05 对数周期。因此，低 pH 值和低温等环境因素有利于沙门氏菌细胞对尼信的杀菌作用敏感。因此，这可能是控制冷藏食品中沙门氏菌的一种替代方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fems Microbiology Letters 生物-微生物学

CiteScore

4.30

自引率

0.00%

发文量

112

审稿时长

1.9 months

期刊介绍： FEMS Microbiology Letters gives priority to concise papers that merit rapid publication by virtue of their originality, general interest and contribution to new developments in microbiology. All aspects of microbiology, including virology, are covered. 2019 Impact Factor: 1.987, Journal Citation Reports (Source Clarivate, 2020) Ranking: 98/135 (Microbiology) The journal is divided into eight Sections: Physiology and Biochemistry (including genetics, molecular biology and ‘omic’ studies) Food Microbiology (from food production and biotechnology to spoilage and food borne pathogens) Biotechnology and Synthetic Biology Pathogens and Pathogenicity (including medical, veterinary, plant and insect pathogens – particularly those relating to food security – with the exception of viruses) Environmental Microbiology (including ecophysiology, ecogenomics and meta-omic studies) Virology (viruses infecting any organism, including Bacteria and Archaea) Taxonomy and Systematics (for publication of novel taxa, taxonomic reclassifications and reviews of a taxonomic nature) Professional Development (including education, training, CPD, research assessment frameworks, research and publication metrics, best-practice, careers and history of microbiology) If you are unsure which Section is most appropriate for your manuscript, for example in the case of transdisciplinary studies, we recommend that you contact the Editor-In-Chief by email prior to submission. Our scope includes any type of microorganism - all members of the Bacteria and the Archaea and microbial members of the Eukarya (yeasts, filamentous fungi, microbial algae, protozoa, oomycetes, myxomycetes, etc.) as well as all viruses.