Evaluation of degradation capability of nitrite and biogenic amines of lactic acid bacteria isolated from pickles and potential in sausage fermentation
Evaluation of degradation capability of nitrite and biogenic amines of lactic acid bacteria isolated from pickles and potential in sausage fermentation
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DOI：
10.1111/jfpp.16141
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发表时间：
2021-11-06
影响因子：
2.5
通讯作者：
Zhang, Hongmei
中科院分区：
文献类型：
--
作者：
Chen, Yingqi;Wu, Changli;Zhang, Hongmei
为获得亚硝酸盐降解菌，从泡菜中筛选出7株乳酸菌，并对其进行鉴定。两杯乳酸菌。plantarum菌株表现出相当高的生物胺（BAs）降解能力。研究了它们对亚硝酸盐和苯甲酸的降解能力，以及在Man-Rogosa-Sharpe（MRS）肉汤和香肠发酵模拟培养基（SM）中的生长速率和pH变化。采用DPPH中心点清除活性评价抗氧化活性。结果表明，它们对MRS发酵液中亚硝酸盐和BA的降解活性均高于SM。这可能是由于SM的人口较少，pH值较高和咸。两个L。植物分离物在分离物培养和破碎细胞提取的形式中也显示出优异的抗氧化能力。因此，两个L.植物源真菌菌株对香肠发酵过程中的一些不良物质具有降解作用，可作为发酵剂使用。新奇影响声明2 L.植物源菌株对亚硝酸盐和苯甲酸具有较强的降解能力。两种L.植物菌株在SM中的作用弱于MRS肉汤。两个湖plantarum菌株具有较高的抗氧化能力。
To obtain nitrite-degrading strains, 7 isolates of lactic acid bacteria (LABs) were selected and identified from pickles. Two Lactobacillus. plantarum strains presented considerably high biogenic amines (BAs) degradation abilities. Their degradation abilities of nitrite and BAs, growth rates and pH changes in Man-Rogosa-Sharpe (MRS) broth and the simulated medium (SM) for sausage fermentation were conducted, respectively. DPPH center dot scavenging activity was used for the evaluation of antioxidant activity. The results showed that they have both higher activity in degrading nitrite and BAs in MRS broth than SM. This probably was due to the lower population, and higher pH and salty in SM. The two L. plantarum isolates also showed excellent antioxidant capacity in the forms of culture of isolates and the extraction of broken cells. Therefore, the two L. plantarum isolates demonstrated the potential to be used as starters with degradation capability on some undesirable substances in fermentation of sausage. Novelty impact statement Two L. plantarum strains from Chinese pickles had high degradation abilities of nitrite and BAs. Degradation abilities of two L. plantarum strains were weaker in SM than MRS broth. Two L. plantarum strains had high antioxidant capability.