butyrous

After 24 hours, Staphylococcus aureus was identified from samples by colony characteristics such as golden yellow appearance on nutrient agar, pale pink, lactose fermenting colonies on MacConkey agar and yellowish-white butyrous colonies with narrow zone of haemolysis on blood agar.

Name Surface colonies plate culture Surface Optical Form Elevation Border character 1 Irregular Raised Erose Smooth Opaque 2 Rhizoid Flat Filamentous Rough Translucent 3 Circular Raised Erose Smooth Opaque 4 Irregular Convex Undulate Smooth Opaque 5 Circular Flat Entire Smooth Translucent 6 Filamentous Flat Filamentous Rugose Translucent Name Consistency Shape Gram Stain 1 Butyrous Bacilli Negative 2 Membranous Cocci Negative 3 Butyrous Cocci Negative 4 Butyrous Bacilli Negative 5 Butyrous Bacilli Negative 6 Brittle Coccus Negative Table 2: The ability of microorganisms in nitrogen cycle.

Macroscopically, 50-100 white-cream colonies grew, with mucoid to butyrous consistence, which darkened with age.

Texture is butyrous (butter like) and elevation is flat.

Colonies are circular, opaque, smooth and have a butyrous (butter- like) consistency.