一株简单芽孢杆菌的培养条件优化
DOI:
https://doi.org/10.70693/cjst.v2i3.2032Keywords:
简单芽孢杆菌, 单因素试验, 响应面试验, 高原微生物菌剂Abstract
简单芽孢杆菌(Bacillus simplex)是川藏高原的特色功能微生物,在农业微生物菌剂开发应用中有较高的潜力。本次研究对象是来自实验室的一株从川藏地区土壤样本中分离得到的简单芽孢杆菌,并已经确认该菌株的生物学分类。本研究的主要内容是以LB培养基为基础,通过对各成分含量进行单因素优化试验,并根据单因素实验结果,进一步通过Box-Behnken响应面法,对酵母浸粉、胰蛋白胨、氯化钠的添加比例进行优化。最终,单因素试验确定了各组分的适宜浓度范围,并经响应面优化得到了最优培养基配方:酵母浸粉18.0 g/L、胰蛋白胨10.0 g/L、氯化钠5.0 g/L。在此培养条件下,菌株OD600值可达8.646,与LB培养基相比,提升了26.11%。本研究通过搭建该菌株的高效培养体系,为高原微生物菌剂的研发与应用提供理论参考与技术支撑。
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