close up of an orange that is infected with green mold penicillium digitatum

agriculture citrus closeup contaminate contaminated contamination cuisine damaged decay decompose decomposed diet digitatum dirty food fruit fungal fungi fungus garbage green healthy infected italicum malignant microbiology microscopic mildew mold moldiness moldy mouldy nasty natural nutrition old orange penicillium problem rot rotten spoilage spoiled storage tangerine uneatable unhealthy unpleasant waste