【摘要】 以实验室保存的木醋杆菌(Acetobacterxylinum)为出发菌株,利用紫外诱变的方法,以获取在低温条件下能高产细菌纤维素的突变株。通过初筛和复筛以及连续传代实验,确定了1株突变性状能稳定遗传的突变株,产量可达8.6g/L(干重),比原出发菌株产量提高了20%。更多还原

【Abstract】 The Acetobacter xylinum strain preserved by our laboratory,as the original strain,was mutated using UV mutagenesis in order to obtain a low temperature-resistant and high cellulose-producing mutant strain.One mutant strain,which was steady in hereditary,was obtained by preliminary screening and second screening,as well as serial passage.The yield of cellulose by the mutated strain reached 8.6 g/L in dry weight,which was 20% higher than that produced by the starting strain.更多还原