What is the preservative used in lactophenol cotton blue?
Lactic acid act as a preservative for fungi. The phenol portion kills the fungi. The cotton blue stains the fungal elements.
How do you make lactophenol cotton blue stain?
A preparation of 50ml Lactophenol cotton Blue staining solution is made up of:
- Distilled water 50ml.
- Cotton Blue (Aniline Blue) 0.125g.
- Phenol Crystals (C6H5O4) 50g.
- Glycerol 100ml.
- Lactic acid (CH3CHOH COOH) 50ml.
- 70% ethanol.
What is the role of cotton blue in lactophenol cotton blue stain?
Lactophenol Cotton Blue is used as staining solution for fungi. 1) Place a drop of Lactophenol Cotton Blue reagent on a clean and dry slide. The stain imparts a blue colouration on hyphae. 2) By using a nichrome inoculating wire, carefully tease the fungal culture, into a thin preparation.
What is the purpose of Lactophenol blue?
Lactophenol cotton blue is a stain that is used to examine fungal elements following either a tape preparation or a scraping. This stain contains phenol, which will kill the organisms, lactic acid which preserves fungal structures, and cotton blue which stains the chitin found in the fungal cell walls.
What is the role of phenol in Lactophenol cotton blue solution?
Phenol kills fungus. Lactic acid acts as a clearing agent and helps preserve the fungal structures. Cotton blue is an aniline dye that stains the chitin in the fungal cell walls which adds colour to the fungal preparation thereby enhancing and contrasting the structures.
What is Lactophenol Cotton Blue Mount?
Lactophenol cotton blue wet mount preparation is commonly used for microscopic identification of fungi. It is formulated with lactophenol, which serves as the mounting fluid and the dye, cotton blue. Lactic acid preserves the fungal structure and clears the tissue while phenol acts as a disinfectant.
Why do we use Lactophenol blue for staining?
What is the difference between Macroconidia and Microconidia?
A mass of hyphal elements is termed the mycelium (synonymous with mold). Aerial hyphae often produce asexual reproduction propagules termed conidia(synonymous with spores). Relatively large and complex conidia are termed macroconidia while the smaller and more simple conidia are termed microconidia.
How does Lactophenol aniline blue work?
Remel Lactophenol Aniline Blue is a stain recommended for use in wet mount preparations for microscopic examination of fungi. Phenol precipitates cytoplasmic proteins and inactivates enzyme systems within the fungal cell. Glycerol prevents drying, allowing for examination of the stain 18-24 hours after preparation.
Why is lacto phenol used for mounting mold cultures?
Why is lactophenol used for mold?
What is lactophenol blue solution?
Lactophenol Blue Solution or Lactophenol cotton blue is a wet mounting medium and staining agent which is used for the preparation of microscopic slides of fungi for examination. Fungal elements are stained intensely blue. You might be thinking, why should we learn this technique or what is the purpose of this technique???? Well, it’s quite simple.
What does lactophenol cotton blue stain look like?
The lactophenol cotton blue solution acts as a mounting solution as well as a staining agent. The stain will give the fungi a blue-colored appearance of the fungal spores and structures, such as hyphae.
How long does it take for lactophenol cotton blue to dissolve?
Lactophenol Cotton Blue solution is prepared for over two days leaving the reagents undisturbed to allow dissolving and maturation. Day 1: Dissolve the cotton blue in distilled water and leave to rest overnight. This eliminates insoluble dye.
How do you use lactophenol cotton blue to stain fungi?
The lactophenol cotton blue solution acts as a mounting solution as well as a staining agent. The stain will give the fungi a blue-colored appearance of the fungal spores and structures, such as hyphae. A preparation of 50ml Lactophenol cotton Blue staining solution is made up of: