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Triarylmethane dye
Crystal violet or gentian violet, also known as methyl violet 10B or hexamethyl pararosaniline chloride, is a triarylmethane dye used as a histological
Crystal_violet
Group of chemical compounds used as dye
changes to violet with pH increasing toward 3.2. Methyl violet 10B has six methyl groups. It is known in medicine as Gentian violet (or crystal violet or pyoctanin(e))
Methyl_violet
Investigative procedure in microbiology
retains the primary stain, crystal violet. Gram-negative cells have a thinner peptidoglycan layer that allows the crystal violet to wash out on addition
Gram_stain
Bacteria that give a positive result in the Gram stain test
step, the decolorizer removes crystal violet from all other cells. Conversely, gram-negative bacteria cannot retain the violet stain after the decolorization
Gram-positive_bacteria
Crystal violet lactone (CVL) is a leuco dye, a lactone derivate of crystal violet 10B. In pure state it is a slightly yellowish crystalline powder, soluble
Crystal_violet_lactone
Technique used to enhance visual contrast of specimens observed under a microscope
principal stain. Crystal violet stains both Gram positive and Gram negative organisms. Treatment with alcohol removes the crystal violet colour from gram
Staining
Differential media
change color. The media inhibits growth of gram-positive organisms with crystal violet and bile salts, allowing for the selection and isolation of gram-negative
MacConkey_agar
Dye with two chemical forms
and therefore appear colorful. Another example of a leuco dye is the crystal violet lactone, which in its lactone form is colorless or slightly yellowish
Leuco_dye
Bacteria unaffected by Gram stain
have a thick peptidoglycan layer in their cell wall, which retains the crystal violet during Gram staining, resulting in a purple color. Gram-negative bacteria
Atypical_bacteria
WBC diluting fluid
Türk's solution (or Türk's fluid) is a hematological stain (either crystal violet or aqueous methylene blue) prepared in 99% acetic acid (glacial) and
Turk's_solution
Ethanol with additives to discourage recreational consumption
countries denaturated alcohol is traditionally dyed with methyl violet or similar hue (crystal violet, methylene blue) dye for safety reasons. In Central and
Denatured_alcohol
Clothing brand that changes color
thermochromic droplets are actually a mixture of several chemicals—crystal violet lactone (the color-changing dye itself), benzotriazole (a weak acid)
Hypercolor
Group of bacteria that do not retain the Gram stain used in bacterial differentiation
are bacteria that, unlike gram-positive bacteria, do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation
Gram-negative_bacteria
Class of dye
the cationic dyes (say crystal violet) vary even though the name of the dye does not. Often it is shown as chloride. Methyl violet dyes have dimethylamino
Triarylmethane_dye
Species of plant in the family Moraceae
useful material for the removal of colouring agents (such as crystal violet, methyl violet 2B and methylene blue) from dye wastewater. The tarap stem axis
Artocarpus_odoratissimus
Chemical compound
Commercial Methyl green preparations are often contaminated with Crystal violet. Crystal violet can be removed by chloroform extraction. Carnoy JB (1884). La
Methyl_green
Polymer in bacterial cell walls
Christian Gram in 1884, is required. The bacteria are stained with the dyes crystal violet and safranin. Gram positive cells are purple after staining, while Gram
Peptidoglycan
soap Chlorhexidine Chlorine dioxide 2-Chlorophenol Creolin Cresolene Crystal violet DBDMH Diazolidinyl urea Electrolysed water Ethanol Eucalyptus oil Fuchsine
List_of_cleaning_products
Chemical compound
samples are often yellow. It is an important precursor to dyes such as crystal violet. DMA was first reported in 1850 by the German chemist A. W. Hofmann
Dimethylaniline
Synthetic pigment
effluents of chemical industry Blue pigments Cobalt blue – Blue pigment Crystal violet – Triarylmethane dye Fluorescein – Synthetic organic compound used as
Prussian_blue
Chemical compound
structurally related to other triarylmethane dyes called methyl violets (e.g. crystal violet) which feature methyl groups on nitrogen. It is prepared by the
Pararosaniline
differential staining is the Gram stain. Gram staining uses two dyes: Crystal violet and Fuchsin or Safranin (the counterstain) to differentiate between
Differential_staining
Chemical compound
water-soluble triarylmethane dye. It is derived from crystal violet by adding a N-ethyl group; crystal violet is therefore a possible contaminant. Changing the
Ethyl_Green
Thickening agent used in microbiology and food
color from green to yellow. MacConkey agar contains bile salts and crystal violet to selectively grow gram-negative bacteria and differentiate between
Agar
Biological stain whose color contrasts with the principal stain
eosin counterstain to haematoxylin in the H&E stain. In Gram staining, crystal violet stains only Gram-positive bacteria, and safranin counterstain is applied
Counterstain
Physical property of certain bacterial, protozoal, and eukaryotic cells
Mycobacteria, can be stained with the Gram stain, but they do not take the crystal violet well and thus appear light purple, which can still potentially result
Acid-fastness
German microbiologist (1857–1932)
studying the internal structure of cells. In an 1898 experiment using crystal violet as a specific stain, Benda first became aware of the existence of hundreds
Carl_Benda
Protective outer structure of bacterial cells
peptidoglycan layer, which is responsible for the retention of the crystal violet dyes during the Gram staining procedure. It is found exclusively in
Cell_envelope
Species of pathogenic bacterium
for grossly contaminated specimens, which contains sodium azide and crystal violet. Bohm's medium uses sodium azide, kanamycin, phenol, and water blue
Erysipelothrix_rhusiopathiae
Solid forms of the element phosphorus
for the reported violet structure from 1969. The single crystal of violet phosphorus was also produced. The lattice structure of violet phosphorus has been
Allotropes_of_phosphorus
Gastrointestinal endoscopic imaging with dyes
include Lugol's iodine, methylene blue, toluidine blue and crystal violet (gentian violet) . Lugol's iodine specifically stains non-keratinized squamous
Chromoendoscopy
Treatment for a wide range of bacteria
take up the Gram stain and counter-stain; bacteria that take up the crystal violet dye stain are referred to as "gram-positive," those that take up the
Broad-spectrum_antibiotic
Medical condition
deficiency, some Heinz bodies will be visible when viewing RBCs stained with crystal violet. This easy and inexpensive test can lead to an initial presumption of
Glucose-6-phosphate dehydrogenase deficiency
Glucose-6-phosphate_dehydrogenase_deficiency
Method for separation and analysis of biomolecules using agarose gel
GelRed, methylene blue, brilliant cresyl blue, Nile blue sulfate, and crystal violet. SYBR Green, GelRed and other similar commercial products are sold as
Agarose_gel_electrophoresis
Aqueous solution of iodine and potassium iodide
performing a Gram stain. It is applied for 1 minute after staining with crystal violet, but before ethanol to ensure that gram positive organisms' peptidoglycan
Lugol's_iodine
Pharmaceutical fungicide or fungistatic used to treat and prevent mycosis
useful against tinea versicolour. Clioquinol Coal tar Copper(II) sulfate Crystal violet – a triarylmethane dye. It has antibacterial, antifungal, and anthelmintic
Antifungal
Film of microorganisms on a surface
structural characteristics. Among the most widely used techniques is the Crystal violet assay, developed by Gerald D Christensen from the University of Rochester
Biofilm
Property of substances to change colour due to a change in temperature
illustrative example is the Hypercolor fashion, where microcapsules with crystal violet lactone, weak acid, and a dissociable salt dissolved in dodecanol are
Thermochromism
Selective culture medium in microbiology
the characteristic morphology of B. pseudomallei. The medium contains crystal violet and gentamicin as selective agents to suppress the growth of other bacteria
Ashdown's_medium
Type of dye
malachite green, crystal violet). Examples: Michlers Hydrol C.I. Solvent Yellow 34 Phenolphthalein (pH 8,2-12) C.I. Basic Violet 14 (Fuchsin) C.I. Basic
Polymethine_dyes
Mammal parasitic disease
triatomine bugs. The 1950s saw the discovery that treating blood with crystal violet could eradicate the parasite, leading to its widespread use in transfusion
Chagas_disease
Device dispensing ink over a metal ball at its point
in blue (and black) ink are Prussian blue, Victoria blue, methyl violet, crystal violet, and phthalocyanine blue. The dye eosin is commonly used for red
Ballpoint_pen
120.9 99.6 cryptocyanine 37.9 1.9 84.3 301.3 crystal violet in glycerol 9.7 3.3 141.3 318.3 crystal violet in water 9.3 3.7 142.0 319.1 fluorescein dibase
Kreft's_dichromaticity_index
2021 studio album by Olivia Rodrigo
2021. Retrieved June 30, 2021. "SOUR (Limited Edition Amazon Exclusive Crystal Violet LP)". Amazon.com.au. Archived from the original on June 30, 2021. Retrieved
Sour_(album)
Thin film of soapy water enclosing air
to the surfactants, enabling brightly coloured bubbles to be formed. Crystal violet lactone is an example. Another man named Tim Kehoe invented a coloured
Soap_bubble
Chemical compound
p-positions of two or three of the aryl groups. Triarylmethane dyes Crystal violet. New fuchsine dye. Pararosaniline Triphenylmethane (C6H5)3CH Triphenylmethanol
Triphenylcarbenium
Genus of bacteria
Clostridium Photomicrograph of Clostridium botulinum bacteria stained with crystal violet Scientific classification Domain: Bacteria Kingdom: Bacillati Phylum:
Clostridium
Topics referred to by the same term
Ground Self-Defense Force Legionella containing vacuole Leuco Crystal Violet, or Crystal Violet Leuco dye Lower Calorific Value, synonymous to Lower Heating
LCV
Chemical compound
ferrocyanide Potassium ferricyanide Methylene blue Egyptian blue Han Purple Crystal violet Fluorescein R. W. Sabnis (2010). Handbook of Biological Dyes and Stains:
Methyl_blue
Mineral, quartz variety
Amethyst is a violet variety of natural quartz. Ancient Greeks wore amethyst and carved drinking vessels from it in the belief that it would prevent intoxication
Amethyst
Abnormal inclusions in red blood cells
more clearly with supravital staining (e.g., with new methylene blue, crystal violet or bromocresol green). Heinz bodies are formed by damage to the hemoglobin
Heinz_body
Danish bacteriologist (1853–1938)
turn out to be useful." A Gram stain is made using a primary stain of crystal violet and a counterstain of safranin. Bacteria that turn purple when stained
Hans_Christian_Gram
Chemical added to show pH of a solution
Elliot Q.; Rosenstein, Ludwig. (1914). "The Color and Ionization of Crystal-Violet". Journal of the American Chemical Society. 36 (7): 1452–1473. Bibcode:1914JAChS
PH_indicator
Blue to purple variety of the mineral zoisite
remarkably strong trichroism, appearing alternately blue, violet and burgundy depending on crystal orientation. Tanzanite can also appear differently when
Tanzanite
Organic compound with at least one hydroxyl (–OH) group
Preparation of crystal violet by protonolysis of the tertiary alcohol.
Alcohol_(chemistry)
Optical microscopy illumination technique
use in microbiology, such as simple stains (methylene blue, safranin, crystal violet) and differential stains (negative stains, flagellar stains, endospore
Bright-field_microscopy
Type of coated paper used to make instant copies without carbon paper
to use it. The first dye used commercially in this application was crystal violet lactone, which remains widely used. Other dyes and supporting chemicals
Carbonless_copy_paper
Species of Gram-positive bacterium
Gram stain of S. aureus cells, which typically occur in clusters: The cell wall readily absorbs the crystal violet stain.
Staphylococcus_aureus
Supravital dyes for RBCs: New methylene blue Brilliant cresyl blue Crystal violet Methyl violet Nile blue Hoechst stain "English Medical Dictionary". N. Chandler
Supravital_staining
Species of bacterium
usually cultured in Burkholderia cepacia agar (BC agar), which contains crystal violet and bile salts to inhibit the growth of Gram-positive cocci, and ticarcillin
Burkholderia_cepacia_complex
Species of bacterium
within liquid. Being Gram-Negative, B. gladioli will not retain the Crystal Violet – Iodine complex following decolorization, but will be counter stained
Burkholderia_gladioli
Colored soap bubbles
leuco dyes. For instance, the purple bubble uses a chemical called crystal violet lactone. After the bubble pops, the colored splatter disappears with
Zubbles
bacteria) and metronidazole (inhibitory for anaerobic bacteria), and crystal violet to suppress the accompanying gram-positive bacteria. A key component
Granada_medium
Paper treated to change colour with heat
dyes, such as Pergascript Black 2C. A third widely used leuco dye is Crystal violet lactone. Red or magenta color can be achieved with dyes such as Yamamoto
Thermal_paper
Species of bacterium
presence of 4% (wt/vol) sodium chloride (NaCl) or 0.0004% (wt/vol) crystal violet. Streptococcus vestibularis is classified as a level 2 biohazard in
Streptococcus_vestibularis
Invasion of an organism's body by pathogenic agents
its background. Staining a cell with a dye such as Giemsa stain or crystal violet allows a microscopist to describe its size, shape, internal and external
Infection
Cytosine-rich quadruplex DNA structure
Thiazole orange, 2,2'-diethyl-9-methylselenacarbocyanine bromide (DMSB), crystal violet, berberine neutral red, thioflavin T, and perylene tetracarboxylic acid
I-motif_DNA
Heteropolysaccharide found in red algae
staining are available, such as SYBR Green, GelRed, methylene blue, and crystal violet. If the separated DNA fragments are needed for further downstream experiment
Agarose
Light commercial van model
producing 88 kW (118 hp) or 100 kW (134 hp). Colour choices include crystal violet, olive-brown and aurora silver for deluxe variants, blanc white, aurora
LDV_Maxus
from the Liverpool laboratory for the inclusion of neutral red and crystal violet. In 1906 he became responsible for the Serum Department and was heavily
Alfred_Theodore_MacConkey
Topics referred to by the same term
Province, Iran Al-badil (disambiguation), Arabic for the alternative Crystal violet, by the trade name Badil BADIL Resource Center for Palestinian Residency
Badil
American drag queen (born 1992)
Paul Jason Dardo (born June 13, 1992), known professionally as Violet Chachki, is an American drag queen, burlesque/aerial performer, content creator,
Violet_Chachki
Species of bacterium
needed] It is classed gram-negative because its cell walls do not retain crystal violet Gram stain; gram-negative bacteria in general are more resistant to
Rickettsia_prowazekii
Laser which emits light with blue wavelengths
nanometers, which the human eye sees in the visible spectrum as blue or violet. Blue lasers can be produced by: direct, inorganic diode semiconductor lasers
Blue_laser
Gem variety of corundum
synthetically in laboratories for industrial or decorative purposes in large crystal boules. It occurs in association with ruby, zircon, biotite, muscovite
Sapphire
Agents that emit light after excitation by light
violet, oxazine 170, etc. Acridine derivatives: proflavin, acridine orange, acridine yellow, etc. Arylmethine derivatives: auramine, crystal violet,
Fluorophore
Class of bacteria
colonial morphology of Erysipelothrix rhusiopathiae. Upper row: ×1200, crystal violet; lower row: ×32 Scientific classification Domain: Bacteria Kingdom:
Erysipelotrichales
Specialized anatomy and physiology of bacteria
wall in gram-negative bacteria. The peptidoglycan layer takes up the crystal violet dye and stains purple in the Gram stain. Bacteria within the Deinococcota
Bacterial_cell_structure
Species of bacterium
activity. G. thermoglucosidasius is gram-positive (bacterium that retains Crystal violet dye during gram-staining) and facultatively anaerobic(produces ATP by
Geobacillus thermoglucosidasius
Geobacillus_thermoglucosidasius
retain crystal violet dye in the Gram staining protocol. gram-positive Gram-positive bacteria are classified as bacteria that retain a crystal violet dye
Glossary_of_phytopathology
Method of analysing water
fermentation. It contains bile salts (to inhibit most Gram-positive bacteria), crystal violet dye (which also inhibits certain Gram-positive bacteria), neutral red
Bacteriological water analysis
Bacteriological_water_analysis
Chemical compound
aniline derivatives gives several of the dyes called methyl violet, such as crystal violet. Condensation of Michler's ketone with N-phenyl-1-naphthylamine
Michler's_ketone
Petri dish with agar used to culture microbes
inhibiting the growth of gram-positive bacteria. Adding bile salts and crystal violet to the agar inhibits the growth of most gram-positive bacteria, making
Agar_plate
Chemical compound
acid. The product is titrated with perchloric acid and detected with crystal violet. Sodium ethyl xanthate can also be quantified using gravimetry, by weighing
Sodium_ethyl_xanthate
with crystal violet demonstrated pH responsive behavior due to the protonation of the polydopamine, which increased the release of the crystal violet in
Pullulan_bioconjugate
Cut or mark in the ear of livestock animals
such as tattooing their tails and painting spots on white mice with crystal violet or permanent markers can be used as well. Microchips are less commonly
Earmark_(agriculture)
Hungarian veterinary scientist
elváltozásokról" [Studies on Post-mortem Lesions in Pigs Vaccinated with Crystal Violet Vaccine]. Magyar állatorvosok lapja (in Hungarian). 10 (6). Budapest:
Erzsébet_Simonyi
British gynecological surgeon (1872–1953)
developed an antiseptic, a 1% solution in 50% alcohol from equal parts of crystal violet and brilliant green. This was used to sterilise and stain the vagina
Victor_Bonney
Determine the concentration of a virus
microscope or visually using cell staining techniques (e.g., staining with a crystal violet solution to visualize intact vs. lysed cells). Plaque formation can
Virus_quantification
Aluminum boro-silicate mineral
aggregates of slender prismatic crystals. The crystals are vitreous and vary in color from brown, blue, and green to more rare violet and pink. Substitution of
Dumortierite
Species of bacteria
A. baylyi under 10x ocular lens and 100x objective lens with crystal violet stain.
Acinetobacter_baylyi
Organic compound used as a pigment
Typically deep red to violet in color, the hue of quinacridone is affected not only by the R-groups on the molecule but by the crystal form of the solid.
Quinacridone
Species of bacterium
of streptomycin per ml, 10 μg of thallous acetate per ml, 0.5 μg of crystal violet per ml, and 1,000 μg of phenol per ml. The lowest pH at which they will
Streptomyces_scabiei
Class of ions
with amine substituents so robust that they are used as dyes, e.g. crystal violet. Carbenium ions can also be stabilized by conjugation to double bonds
Carbenium_ion
Chemical compound
the peptidoglycan layer is relatively thin and does not retain the crystal violet stain used in the Gram staining method of bacterial classification.
Darobactin
Silicate mineral
relatively low index of refraction. It has the orthorhombic crystal system and a dipyramidial crystal class. It occurs in many places in the world. Two of the
Topaz
Intentional food mislabelling
this compound in aquaculture began to decrease. Gentian violet, also known as crystal violet has antibacterial, antifungal, and antiparasitic properties
Seafood_mislabelling
Chemicals regulated in the United States
(female, male) 25812-30-0 December 22, 2000 August 20, 1999 Gentian violet(Crystal violet) 548-62-9 Glass wool fibers (when inhalable and biopersistent) –
California Proposition 65 list of chemicals
California_Proposition_65_list_of_chemicals
2023 video game
expansion pack for the 2022 role-playing video games Pokémon Scarlet and Violet on Nintendo Switch. It is developed by Game Freak and published by The Pokémon
The Hidden Treasure of Area Zero
The_Hidden_Treasure_of_Area_Zero
growth is indicated by growth below the surface. MacConkey agar without crystal violet Niacin accumulation (paper strip method) Niacin is formed as a metabolic
Phenotypic testing of mycobacteria
Phenotypic_testing_of_mycobacteria
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