What is the colony morphology of Bacillus?
Bacillus anthracis — Colony Characteristics Colonies are nonhemolytic, flat or slightly convex with irregular edges and ground-glass appearance. There are often comma shaped projections from the colony edge producing a “Medusa-head” colony. Colonies have a sticky consistency when manipulated with a loop.
What is the growth pattern of Bacillus subtilis?
The bacterium grew to a fractal colony through the diffusion-limited aggregation process, a round colony reminiscent of the Eden model, a colony with a straight and densely branched structure similar to the dense branching morphology, a colony spreading without any openings, and a colony with concentric rings, on …
Can Bacillus subtilis grown on nutrient agar?
Bacillus subtilis is a typical germ, which is rod-shaped and Gram-positive. When cultured on ordinary nutrient agar, the morphology circular colony of this bacteria is rough, opaque, fuzzy white or slightly yellow with jagged edges [1, 7].
Does Bacillus subtilis grow on MacConkey Agar?
Record observations here on the growth and appearance of the three bacteria on MacConkey agar. Bacillus subtilis No or very little growth. Escherichia coli Heavy growth; pink to red. Pseudomonas fluorescens Heavy growth; not pink or red.
What are the characteristics of Bacillus subtilis?
Bacillus subtilis is a motile, Gram-positive, rod-shaped bacteria that occurs as short chains, small clumps, or single cells. It is heterotrophic, which means it cannot make its own food and needs to consume from the environment.
What does Bacillus subtilis look like on an agar plate?
Does Bacillus subtilis grow on nutrient agar?
What is the morphology of Bacillus subtilis germ?
Bacillus subtilis is a typical germ, which is rod-shaped and Gram-positive. When cultured on ordinary nutrient agar, the morphology circular colony of this bacteria is rough, opaque, fuzzy white or slightly yellow with jagged edges [1, 7].
How is Bacillus subtilis used in the future?
Thus, this newly identified bacterium was classified as Bacillus subtilis. Importantly, the crude bacteriocin of this Bacillus subtiliscould inhibit the growth of Staphylococcus aureus, Escherichia coli, Enterococcusand Salmonella, which implies its potential usage in the future. Keywords: Bacillus subtilis, bacteriocins, identification
What makes Bacillus subtilisare a safe probiotic?
Bacillus subtilisare recognized as safe and reliable probiotics strains that are non-pathogenic to humans and animals. Bacteriocin protein or polypeptide is generated during the process of growth and reproduction of this bacterium. This substance has a high antibacterial activity, broad antibacterial spectrum and excellent thermal stability.
Is the Bacillus subtilis a lactose fermenter?
B. subtilis is able to complete glycolysis and the TCA (tricarboxylic acid) cycle because of its aerobic cellular respiration. B. subtilis can ferment glucose, sucrose, but not lactose.