It is most common in tropical and subtropical drupes and cereals.
Aspergillus niger strain characteristics: Aspergillus niger, sub fungus, hyphomycetes, hyphomycetes, arbusculariaceae, a common species of Aspergillus, widely distributed in grains, plant products and soil around the world, mainly used in the fermentation industry to produce amylase, acid protease, cellulase, pectinase, glucose oxidase, citric acid Gluconic acid, gallic acid, etc.