a mandarin with mold, fungi penicillium which cause food spoilage

antibiotic background cheese chrysogenum citrus conidia conidiophore digitatum eumycota first fleming food formation fungal fungi fungus green growth health illustration isolated macro mandarin microbial microbiology mold mould mycology mycosis nature naturemycology notatum orange penicillin penicillium rotten science scientific source spoiled spore white