雄烯二酮产生菌的诱变选育及发酵条件优化的研究
雄烯二酮产生菌的诱变选育及发酵条件优化的研究摘要雄烯二酮(AD)是一种重要的雄性激素,具有广泛的生物学功能。本文以发酵方法为基础,通过诱变技术选育出一株高产AD的菌株,并优化其发酵条件。结果表明,经过
雄烯二酮产生菌的诱变选育及发酵条件优化的研究 摘要 AD 雄烯二酮()是一种重要的雄性激素,具有广泛的生物学功能。 AD 本文以发酵方法为基础,通过诱变技术选育出一株高产的菌株,并优 Bacillus sp. GZ-01 化其发酵条件。结果表明,经过诱变选育得到的菌株 AD3.26 g/L2.5 产量达到了,比未经诱变的对照菌株提高了倍。经过发 pH7.0 酵条件优化,得到了最佳的发酵条件为:初始为,初始菌液浓度 1×10^8 CFU/mL30℃72 hAD 为,温度为,发酵时间为。在此条件下, 4.5 g/LAD 的产量达到。本研究为的生产提供了新的菌株来源及生产技 术支持。 关键词:雄烯二酮;发酵;诱变选育;优化 Abstract Androstenone (AD) is an important male hormone with wide biological functions. In this study, ahigh AD-producing strain was selected through mutagenesis technique based on fermentation method, and its fermentation conditions was optimized. Results showed that Bacillus sp. GZ-01, the selected strain, had AD productivity of 3.26 g/L, which was 2.5 times higher than that of the control strain without mutagenesis. With optimized fermentation conditions of initial pH at 7.0, initial inoculum of 1×10^8 CFU/mL, temperature at 30℃, and fermentation time of 72 h, the AD productivity was further increased to 4.5 g/L. This study provides anew source of strains for AD production and technical support for its production. Keywords: androstenone; fermentation; mutagenesis selection; optimization 1. 引言 AD 雄烯二酮()是一种重要的雄性激素,可产生猪肉等动物的性气 AD 味。此外,在生殖系统、神经系统和免疫系统等方面都具有广泛的生 AD 物学功能。因此,的大规模生产具有广阔的应用前景。目前,制备 AD 的方法主要有化学合成和微生物发酵法两种。化学合成法虽然能够合

