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Brilliant blue FCF dye within beverages items—such as soda—can be used in the blue bottle experiment. In such foods, both the dye and reducing agents are incorporated in the same solution. When the solution is blue, oxygen is present. On the addition of NaOH, a reaction occurs that removes the oxygen, turning the solution clear.
A Ziehl–Neelsen stain is an acid-fast stain used to stain species of Mycobacterium tuberculosis that do not stain with the standard laboratory staining procedures such as Gram staining. This stain is performed through the use of both red coloured carbol fuchsin that stains the bacteria and a counter stain such as methylene blue .
Gram-positive cells have a thick layer of peptidoglycan in the cell wall that retains the primary stain, crystal violet. Gram-negative cells have a thinner peptidoglycan layer that allows the crystal violet to wash out on addition of ethanol. They are stained pink or red by the counterstain, [3] commonly safranin or fuchsine.
Fungal yeast forms are inconsistently stained with Acid-fast stain which is considered a narrow spectrum stain for fungi. [21] In a study on acid-fastness of fungi, [ 22 ] 60% of blastomyces and 47% of histoplasma showed positive cytoplasmic staining of the yeast-like cells, and Cryptococcus or candida did not stain, and very rare staining was ...
It is used as a food coloring, [4] printing ink, [5] biological stain, [6] dental plaque disclosing agent, [7] radiopaque medium, [6] sensitizer for orthochromatic photographic films, and visible light photoredox catalyst. [8] Erythrosine is commonly used in sweets such as some candies and ice pops, and even more widely used in cake-decorating ...
Researchers used a food coloring dye used in Doritos, seen here on the shelves at No Good Candy Thursday, May 27, 2021, in St. Cloud, Minnesota, to create mice with see-through skin.
Just like baking soda and vinegar simulate a volcanic eruption, baking soda interacts with acidic ingredients in doughs and batters to create bubbles of CO 2. But instead of spilling out of a ...
But you can make your own baking powder: combine 2 tablespoons of baking soda with 1/4 cup of cream of tartar and pass it several times through a sifter. Some cooks believe the DIY baking powder ...