I'm investigating some spoilage in chocolate milk. And i decided to use PDA and see what would grow. The petri dish were incubated at 35 C and 25 C. The dilitiuons were 10^-1 till 10^-6.
At 35 C there were growth of yeast at 10^-1 dillution.
At 25 C there were growth of moulds and yeasts at 10^-1 as you can see in the image IMG_3743 and 10^-2 ; and two yellow colony in 10^-6 as you can see in the image IMG_3745. I did not manage to identify it yet.
Can you help me to identify the yellow colony? what can cause it?
Also, the strcture of the yellow one in IMG_3743 is diferent from the one in IMG_3745. The fisrt one looks like flower spores and the second one is more compact.
I'm also doing experiments to identify bacteria (using PCA).
IMG_3743.JPG 68.26KB 0 downloads
IMG_3745.JPG 45.63KB 0 downloads