Through the single factor experiment determination ultraviolet ray mutagenesis's time, and under this mutagenesis time's condition, the natto bacillus carries on mutafacient processing to T-3.
通过单因素试验确定紫外线诱变的时间，之后对T-3纳豆杆菌进行诱变处理。
Produced nattokinase in liquid fermentation of Bacillus natto I.
利用纳豆菌i液体发酵生产纳豆激酶。
Methods Chromosome DNA was isolated from Bacillus natto . The pro nattokinase gene was then amplified from chromosome by PCR.
方法从纳豆芽胞杆菌中分离纯化基因组DNA ，作为模板通过PCR扩增纳豆激酶原基因。
The natto activating enzyme was the serine proteinase which produces in the natto bacillus fermentative process, has the good filament solubility.
纳豆激酶是纳豆杆菌在发酵过程中产生的一种丝氨酸蛋白酶，具有良好的纤溶酶活性。
Bacillus subtilis natto has been authorized to be the microbiological feed additive. The research on the effects of bacillus subtilis natto as feed additive for dairy cattle is rare.
纳豆芽孢杆菌已被我国饲料主管部门批准为微生物饲料添加剂，但是将其做为奶牛饲用微生物的使用效果还缺乏研究。
The results showed that Bacillus natto could inhibit not only some kinds of gram positive and gram negative bacteria, but also some kinds of yeasts and moulds.
结果表明，纳豆菌具广谱抗菌作用，对细菌、酵母菌和霉菌皆有一定的拮抗作用。
The effects of bacillus subtilis natto on the growth, performance and weaning age of sucking calves were investigated.
研究添加的纳豆芽孢杆菌对断奶前犊牛生长状况、生产性能、断奶日龄等的影响。
It was concluded that Bacillus natto was an excellent microbial feed additive.
结果提示，纳豆芽孢杆菌是优良的饲用微生物添加剂。
It was concluded that Bacillus natto was an excellent microbial feed additive.
结果提示，纳豆芽孢杆菌是优良的饲用微生物添加剂。
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