摘要
在培养基中加入微量稀土元素,培养壮观链霉菌(Steptomycesspectabilis),观察测定对其生长和壮观放线菌素(Actinospectacin)合成的影响.试验表明,1×10-6和5×10-6稀土元素明显促进菌落生长,用琼脂块法测定的抑菌圈平均直径明显大于对照.在5×10-6稀土斜面上生长的孢子,其发芽率比对照孢子发芽率高约10%.用杯碟法测定摇瓶发酵液效价的结果显示,含1×10-6和5×10-6稀土的发酵液,其相对效价高出对照约7~8%.稀土斜面孢子传至第6代时,其生产力没有明显下降,在4℃下保藏5周的稀土斜面孢子的生产力,基本上保持原有水平.
The effects of rare-earth elements on the growth of streptomyces spectabilis and the yield ofactinospectacin were studied by adding trace rare-earth elements in the culture media. Tests showthat the growth,spore formation and germination of streptomyces spectabilis,the actinospectacinsynthesis and yield stability are obviously promoted by aciding 1 × 10-6 and 5×10-6 rare-earth elements.
出处
《内蒙古大学学报(自然科学版)》
CAS
CSCD
1996年第3期392-396,共5页
Journal of Inner Mongolia University:Natural Science Edition
基金
内蒙古自然科学基金