False-colour SEM of Aspergillus niger [black mold]
How to Kill Aspergillus Niger. Aspergillus niger is a common mold found all over the world, commonly in decaying organic matter or decaying food products. You can recognize Aspergillus niger as a common black mold in moist surfaces, and in.
On an industrial level, citric acid is produced with the help of special mold and used as a flavor enhancer and preservative in food.