Health & Environment
Fanny Angelina Hesse's Kitchen Jelly Discovery That Permanently Transformed Modern Microbiology
The Hindu1d
THE BRIEF
1
Fanny Angelina Hesse proposed substituting liquefying gelatin with kitchen agar in Robert Koch's bacteriology laboratory in the 1880s to culture pathogens effectively.
2
Agar, a polysaccharide extracted from red algae containing agarose and agaropectin, remains thermally stable and solid at incubation temperatures required for human pathogen research.
3
The introduction of agar enabled scientists to reliably isolate pure bacterial colonies, facilitating foundational discoveries including identifying the tuberculosis bacillus.