生物加工过程2025，Vol.23Issue(2)：147-152,6.DOI:10.3969/j.issn.1672-3678.2025.02.003
盐度对Alcaligenes faecalis DN25降解氰化物的影响
Effects of salinity on cyanide degradation by Alcaligenes faecalis DN25
摘要
Abstract
The salinity of wastewater is an important factor to affect the biodegradation activity.To further evaluate the practical application potential of Alcaligenes faecalis DN25,the cyanide degradation of this strain was studied under different salinity levels.As a result,the cyanide degradation required much longer time with the increase of salinity.For example,the degradation time of 100 mg/L cyanide increased from 30 minutes to 84 hours when the salinity rose from 0 to 8％.Interestingly,the addition of glutamate,as a compatible solute,could significantly accelerate the cyanide degradation by strain DN25.Notably,under a salinity level of 4％,the addition of 300 mg/L glutamate could lead to complete degradation of 100 mg/L cyanide within just 30 minutes,whereas the degradation efficiency of the same sample without glutamate dropped to 86.2％±0.9％.Our preliminary studies revealed that glutamate could rapidly enter the cells to maintain osmotic pressure balance,thus sustaining the degradation activity.Overall,Alcaligenes faecalis DN25 exhibited promising potential for practical applications in the field of wastewater treatment.关键词
盐度/谷氨酸/相容性溶质/氰化物/生物降解/Alcaligenes faecalisKey words
salinity/glutamate/compatible solutes/cyanide/biodegradation/Alcaligenes faecalis分类
生物学引用本文复制引用
沈慧婷,李洪慧,李梅,方艺燕,李青云..盐度对Alcaligenes faecalis DN25降解氰化物的影响[J].生物加工过程,2025,23(2):147-152,6.基金项目
广西大学科研基金(XJZ130360) （XJZ130360）
广西高等教育本科教学改革工程项目(2021JGA111) （2021JGA111）
广西大学生创新创业训练计划(S202210593363) （S202210593363）
