Some articles on notatin:

Glucose Oxidase - Related Enzymes: Notatin and Other Names
... Notatin, extracted from antibacterial cultures of Penicillium notatum, was originally named Penicillin A, but was renamed to avoid confusion with penicillin ... Notatin was shown to be identical to Penicillin B and glucose oxidase, enzymes extracted from other molds besides P ... Early experiments showed that notatin exhibits in vitro antibacterial activity (in the presence of glucose) due to hydrogen peroxide formation ...