There are several hundred species of aspergillus. It is highly aerobic (can grow easily in an oxygenated environment), so it is found in almost all oxygen-rich environments. It contaminates mostly starchy foods, and grows on plants and trees, but there are also advantages to aspergillus. It can cure infections, such as external ear, skin lesion and ulcer infections. It also contributes to citric acid production, and the production of native and foreign enzymes.
Structure of Aspergillius
There are over three hundred species of penicillium. It plays an important role in the natural envi-ronment and food and drug production. For example, it produces an antibiotic, namely penicillin, to stop or kill the growth of bacteria. Griseofulvin is an antifungal drug and a potential chemothera-peutic agent derived from penicillium. It is also used in the production of cheese, milk, and various meat products.
Structure of Penicillium
There are ten species of Rhizopus. It is found on a variety of organic substances, including jellies, syrups, breads and peanuts. Rhizopusstolonifer, commonly known as black bread mold, and rhizopusnigricans are common types of bread mold. They take in nutrients from bread using extracellular enzymes and causes damage to the surface where it lives.
Structure of Rhizopus