ABSTRACT

This work aimed to study the bacteriocin-like inhibitory substance (BLIS) produced by Pediococcus acidilactici CE51 in orange beverage artificially contaminated with Listeria monocytogenes and Enterococcus faecium. The BLIS was stable for 35 days at −20°C or −80°C and at 50°C for 1 h. In addition, it was not influenced by pH (2.0 and 6.5). Its biopreservative effect against Enterococcus faecium was better than sodium benzoate (1 log CFU/mL of difference). In addition, a reduction in L. monocytogenes of 5 log CFU/mL was observed (p < 0.05). The BLIS demonstrated the potential to be applied in the food industry as a biopreservative in an orange beverage.

摘要

本工作旨在研究乳酸片球菌CE51在被单核细胞增生李斯特菌和粪肠球菌人工污染的橙汁饮料中产生的类细菌素抑制物质（BLIS）。BLIS 在 -20°C 或 -80°C 下稳定 35 天，在 50°C 下稳定 1 小时。此外，它不受 pH 值（2.0 和 6.5）的影响。其对粪肠球菌的生物防腐效果优于苯甲酸钠（相差1 log CFU/mL）。此外，观察到单核细胞增生李斯特菌减少5 log CFU/mL ( p  < 0.05)。BLIS 展示了在食品工业中作为橙色饮料中的生物防腐剂应用的潜力。