Radial Growth Phase of Aspergillus Species in Selected Food Substances (Tomato, Onion, Pepper and Carrot) at Different Temperatures
This study was carried out to determine the effect of temperature on radial growth phase of Aspergillus spp. Aspergillus niger was isolated from apparently spoilt samples of onion, tomato and carrot. These food samples were obtained from different locations. Isolation of A. niger was done using Potato Dextrose Agar (PDA). A. niger which was inoculated at the centre of the PDA plate was observed for radial growth for a period of seven days at 12 hourly interval, twice daily at 280C and 370C respectively. It was generally observed that A.