Related Experiment Video
Updated: Aug 5, 2026

Isolation and Chemical Characterization of Lipid A from Gram-negative Bacteria
Published on: September 16, 2013
Isolation and characterization of antibiotic LL-AC541
Abstract:
A new basic, water-soluble antibiotic designated LL-AC541, produced by a strain of Streptomyces hygroscopicus (NRRL 3111), was isolated as a hydrochloride salt; [alpha](D) (25), - 58 degrees , melting point, 200 to 215 C (decomposition). It is structurally related to streptothricin but does not contain beta-lysine. Isolation procedures, physicochemical properties, antimicrobial spectrum, and in vivo testing results are presented. Another very closely related antibiotic obtained from the same fermentation is briefly described.
More Related Videos
08:58Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes
Published on: March 3, 2023
05:06Characterizing Multidrug Efflux Systems in Acinetobacter baumannii Using an Efflux-Deficient Bacterial Strain and a Single-Copy Gene Expression System
Published on: January 5, 2024
Related Concept Videos
Antibiotic Selection
Clinical Significance of Antibiotic Resistance