Page 143 – Biology Notes Online

New York City Agar – Composition, Preparation, Result, Uses

• Published on May 15, 2024 • 12 min readby Editorial Team

NYC Agar Base medium was initially created by Fauer, Weisburd and Wilson at the New York City Department of Health to isolate the pathogenic Neisseria strains from human samples. NYC medium, designed primarily to isolate pathogenic Neisseria is also able to support the growth of mycoplasmas with large colonies or mycoplasmas T (Ureaplasma). It is a translucent medium, highly selective, allowing direct microscopic observations and presumed identification of mycoplasmas and Neisseria gonorrhoeae.

Martin Lewis Agar – Composition, Preparation, Principle, Uses

• Published on May 15, 2024 • 16 min readby Editorial Team

What is Thayer Martin Medium? Composition of Martin Lewis Agar Ingredients Gms/L Casein Peptone 7.5 Meat Peptone 7.5 Corn Starch 1.0 Potassium Phosphate, dibasic 4.0 Potassium Phosphate, monobasic 1.0 Sodium Chloride 5.0 Agar 10.0 Hemoglobin 10.0 Dextrose 1.5 Enrichment Bio-X 10 ml Antibiotics V.C.A.T 10 ml pH 7.2 +/- 0.2 at 25º C Enrichment Bio-X … Read more

Peptone Water – Principle, Composition, Preparation, Uses

• Published on May 15, 2024 • 14 min readby Editorial Team

Peptone Water Composition, Preparation, Uses, Principle

Peptone Water is a type of broth medium. This media is mainly used to grow the organism and is also used as a base for determining carbohydrate fermentation patterns of non-fastidious organisms. It is also used to detect indole production by the organism.

Alkaline Peptone Water – Preparation, Composition, Principle, Application.

• Published on May 15, 2024 • 25 min readby Editorial Team

Clinical materials containing small numbers of Vibrio should be inoculated into an enrichment medium prior to plating onto a selective medium, such as TCBS Agar (M189). Alkaline Peptone Water is a suitable enrichment broth for this purpose.

Blood Agar – Preparation, Composition, Application, and limitation

• Published on May 15, 2024 • 46 min readby Editorial Team

Blood Agar Definition, Preparation, Composition, Application, and limitation.

production of blood agar after the addition of liquid blood.

Sheep blood agar – Composition, Principle, Procedure, Uses.

• Published on May 15, 2024 • 5 min readby Editorial Team

Sheep blood agar The principle of sheep blood agar Haemolysins are exotoxins created by bacteria that kill Red blood cell clots. The haemolytic process can be observed on blood Agar Plates. In blood agar plates, colonies of haemolytic bacterium may be covered by a the clear, uncoloured zone, in which the Red blood cells are … Read more

Mueller Hinton Agar (MHA) Composition, Principle, Preparation

• Published on May 15, 2024 • 21 min readby Editorial Team

What is Mueller Hinton Agar (MHA)? Why MHA is used for antibiotic susceptibility testing (AST)? Mueller Hinton Agar (MHA) is commonly used for antibiotic susceptibility testing due to several key reasons: Mueller Hinton Agar (MHA) Principle The principle of Mueller Hinton Agar (MHA) revolves around its composition and the controlled levels of various components to … Read more

Salmonella Shigella Agar (SS Agar) – Principle, Composition, Application

• Published on May 15, 2024 • 17 min readby Editorial Team

Salmonella Shigella (SS) Agar Principle, Composition, Application

Salmonella Shigella (SS) Agar can be moderately specific and a differing medium used for the cultivation, isolation as well as differentiation Salmonella spp. and a few varieties that belong to Shigella spp.

Anesthetic (MS222) Solution Preparation

• Published on May 15, 2024 • 2 min readby Editorial Team

Anesthetic Solution (Buffered MS222) is commonly used to temporarily immobilize fish and amphibians.

Carbenicillin Solution Preparation

• Published on May 15, 2024 • 1 min readby Editorial Team

Carbenicillin is an ampicillin analog with structure related to benzyl penicillin. It is effective against Gram-negative bacteria and exhibits limited activity against Gram-positive bacteria. Carbenicillin binds and inhibits the enzymes involved in the synthesis of bacterial cell wall. Since carbenicillin is less sensitive to β-lactamases than ampicillin, it is effective against ampicillin-resistant bacteria. It has … Read more