Isolation and identification of yeasts from soil in Caleb University, Lagos, Nigeria

Abstract

Yeast cells are unicellular microorganisms that can be found in various environments, including soil, plants, and animals. They are important in the food and fermentation industry, where they are used for production of various alcoholic beverages, bread, and cheese. Yeast cells have also been used for their role in biotechnology and as model organisms for genetic research. Yeast cells play a critical role in soil ecosystems, contributing to nutrient cycling, plant health, and overall soil ecology. This study focuses on the isolation and characterization of yeast cells from soil samples in the study location. Soil samples were collected from five locations in Caleb University, representing diverse habitats and soil types. Yeasts were isolated using selective media that favored yeast growth while inhibiting the growth of other microorganisms. Isolated yeasts were characterized based on the colonial, morphological and biochemical characteristics. Twenty yeasts isolates were isolated and identified which fell into the genera; Candida species, Geotrichum species and Saccharomyces species. Candida species was most abundant with isolation rate of 45%. This research contributes to our understanding of yeast within soil ecosystems. This study provides insights to soil as a cheap source of yeasts cells. These yeasts could be harnessed due to their potential applications in agriculture, biotechnology, and environmental remediation.