吉他霉素,又称柱晶白霉素,是一种十六元环大环内酯类抗生素,由十六元环大环内酯、碳霉糖和碳霉氨糖三部分构成,其抗菌作用与红霉素、螺旋霉素等相似。其中含有A1、A3、A4、A5、A6、A7、A8、A9、A13等A族组分,B1、B2、B3、B4等B族组分及U、V等小组分。其产生菌为北里链霉菌。在本研究中,主要从菌种工艺两方面着手研究吉他霉素。先要筛选出效价高、较稳定的菌种,然后主要通过添加原材料、氨基酸
introduction: Organophosphates (OPs) are highly toxic synthetic chemicals with no natural analogs.Since the middle of the last century, these compounds have been widely used as agricultural pesticides
In this work, a glutaryl-7-aminocephalosporanic acid acylase (GLA) coding gene was cloned from Pseudomonas diminuta NK703 which was screened from oilfield.The concerted effects of the expression syste
In the production of L-lactic acid, the residual sugar that were difficult to be used by the microorganism in the broth would lead to the increased sugar content in its commercial products,bringing la
Dalesconols (dalesconols A and B) arc novel polyketides with strong immunosuppressive activity produced by Daldinia eschscholzii.In this work, the effects of different media (M1, M2, and M3) on fungus
Backgrounds: In this study, the performance of aerobic batch fermentation with Aspergillus niger producing sodium gluconate under different oxygen supply levels through adjusting the agitation rate we
This paper hinged on the combination effect of two different neutralizing agents Ca(OH)2and NH4OH on the production of L-lactic acid by Lactobacillus paracasei.Present study quantitatively indicated t
The effects of Ca(OH)2, NH4OH and NaOH as neutralizing agents on the efficiency of l-lactic acid production by Lactobacillus paracasei were investigated in this study.Fermentation performance with Ca(
Enantioselective hydrolysis of racemic epoxides mediated by epoxide hydrolases (EHs) is one of the most promising approaches to obtain enantiopure epoxides.In this study, we identified and characteriz
Curvulamine is a novel alkaloid with strong antimicrobial activity produced by the marine-derived fungus Curvularia sp.IFB-Z10.In this work, the effect of different carbon and nitrogen source on the c