5.1 MORPHOLOGICAL DESCRIPTION ON THE FUNGI PRESENT ON THE FRUITS
Aspergillus niger: This type of fungi causes a black mold, on certain fruits and vegetables and it’s a common contaminant of food. It is ubiquitous in soil and is commonly reported from indoor environments. A. niger have been reported to produce a mycotoxins called ochratoxins.
Aspergillus flavus: is a saprotyphic and pathogenic fungus with a cosmopolitan distribution, postharvest rot typically develops during harvest, storage and/ or transit. The pathogen can disrupts the growth of many seedlings, and discolour embryos. This pathogen can cause liver cancer in mammals through the liver, by consumption of contaminated food, fruits or by aspergillosis through invasive growth. A.flavus overwinters in the soil and appears as propagules on decaying matter, either as mycelia or sclerotia.
Aspergillus Versicollum: this is a slow growing filamentous fungus commonly found in damp in door environment and on food products. It is a major producer of the hepatotoxic and carcinogenic mycotoxins sterigmatocystin. It has a slow to moderate growth, maturing in about 3 to 7 days. This fungus is ”suede like” in texture causes skin infection in animals.
Aphanoascus fulvescens apinis: colonies are moderately fast growing, white to tan with the production of numerous spherical, pseudoparenchymatous, bluff to light brown cleistothecia (non-osteolate ascocarps)
Fusarium spp: this is a soil fungi and are plant pathogens, causing root and stem rot, vascular wilt or fruit wilt. Several species of this fungi have emerged as important opportunistic pathogens in humans causing hyalohyphomycosis (especially in burn victims and bone marrow transplant patient).
Candida tropicals: is a specie of yeast in the genus candida. this is a major cause of septicaemia and disseminated candidiasis, it is also found as a part of the normal human mucocutaneous flora and environmental feaces e.t.c.
Penincilium chryosegenum: this specie of fungus also known as penincilium notatum is mostly found in indoor environments, especially in damp or water-damaged buildings. It is the source for penicillin the first antibiotic tha works against gram-positive bacteria such as staphylococcus and pneumococcus by distrupting the bacterial cell wall synthesis.