试验结果表明：通过高浓度游离氨对硝化菌选择性抑制所获得的亚硝酸盐积累是不稳定的；
The experimental results showed that the nitrite accumulation obtained from selective inhibition of high concentration free ammonia to nitrifier was unstable.
当泌尿系统受到感染时，由于细菌还原硝酸盐生成亚硝酸盐，因此检测结果为阳性，常见于大肠埃希氏菌引起的泌尿系统感染。
When the urinary tract infection due to bacterial reduction of nitrate and nitrite generation so the test results were positive common in E. coli caused urinary tract infections.
介绍了亚硝酸盐在肉制品中的抑菌发色作用及其引发的食品安全性问题，并对降低肉制品中亚硝酸盐残留量的方法进行了综述。
Nitrite is an important food additive. The function and the security of nitrite in meat product were pointed out. And the methods to reduce the nitrite residue in meat products were summarized.
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