Screening， Degradation Characteristics and Mechanism of Lactic Acid Bacteria with Degradation of N-Nitrosamine

被引：0

作者：

Guo J. ^{[1
]}

Xiao Y. ^{[2
]}

Liu P. ^{[3
]}

Liu Z. ^{[4
]}

Su L. ^{[1
]}

Zhao L. ^{[1
]}

Jin Y. ^{[1
]}

机构：

[1] College of Food Seience and Engineering, Inner Mongolia Agricultural University, Hohhot

[2] Hohhot Sampling Monitoring and Major Activities Support Center, Inner Mongolia Agricultural University, Hohhot

[3] Ulanqal Market Supervision and Administration, Inner Mongolia, Ulanqab

[4] Urad Middle Banner Agriculture, Animal Husbandry and Science and Technology Bureau, Inner Mongolia, Bayannur

来源：

Journal of Chinese Institute of Food Science and Technology | 2023年 / 23卷 / 06期

关键词：

A-nitrosamines; degradation; lactic acid bacteria; screening;

D O I：

10.16429/j.1009-7848.2023.06.006

中图分类号：

学科分类号：

摘要：

The lactobacillus with high A-nitrosamine -degrading ability was screened from 16 strains of lactobacillus isolated from traditional fermentation products in Inner Mongolia by high performance liquid chromatography which was used to detect the content of TV—nitrosamine in the co—culture system of lactic acid strain and TV—nitrosamine, and its degradation characteristics and mechanism were revealed. The study showed that L.plantarum AL6—1 could efficiently degradate A-nitrosamines, and the degradation effect could be improved when the incubation time was 36 h, the initial pH was 4.5, the temperature was 37 °C or the inoculation concentration was 1010 CFU/mL in the culture system with the final concentration of iV-nitrosamines of 1 p.g/mL. The maximum degradation effect of iV-dimethylnitrosamine and iV-diethylni-trosamine was 63.90% and 61.65%, respectively. And the degradation rate of L.plantarum AL6—1 intracellular extract on NDMA and NDEA reached 70.28% and 71.88%, respectively, within 6 hours. It was determined that the removal of ni-trosamines was mainly through the degradation of intracellular extract. © 2023 Chinese Institute of Food Science and Technology. All rights reserved.

引用

页码：48 / 55

页数：7

共 19 条

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