As far as the pharmaceutical industry is concerned, starch is the most important raw material for the antibiotic industry, because almost all antibiotics are produced by starch fermentation, such as penicillin, cephalosporin, tetracycline, oxytetracycline, chlortetracycline, and streptomycin, which sell very well. And various aminoglycoside antibiotics, etc., all of them are fermented and extracted by industrial microorganisms using starch as a substrate. In addition, another important use of starch is as a pharmaceutical excipient. In the early days, most of the tablets produced by pharmaceutical factories in various countries used corn starch as a filler and a binder.