Gram Staining Procedure Animation Microbiology - Principle, Procedure, Interpretation
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- เผยแพร่เมื่อ 24 ก.ย. 2019
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Gram staining procedure animation - Principle, Procedure, Interpretation
Principle:
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Staining is an auxiliary technique used in microscopic techniques used to enhance the clarity of the microscopic image. Stains and dyes are widely used in the scientific field to highlight the structure of biological specimens, cells, tissues etc.
The most widely used staining procedure in microbiology is the Gram stain, discovered by the Danish scientist and physician Hans Christian Joachim Gram in 1884. Gram staining is a differential staining technique that differentiates bacteria into two groups: gram-positives and gram-negatives. The procedure is based on the ability of microorganisms to retain color of the stains used during the gram stain reaction. Gram-negative bacteria are decolorized by the alcohol, losing the color of the primary stain, purple. Gram-positive bacteria are not decolorized by alcohol and will remain as purple. After decolorization step, a counterstain is used to impart a pink color to the decolorized gram-negative organisms.
Importance of a Gram Stain:
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The Gram stain is a very important preliminary step in the initial characterization and classification of bacteria. It is also a key procedure in the identification of bacteria based on staining characteristics, enabling the bacteria to be examined using a light microscope. The bacteria present in an unstained smear are invisible when viewed using a light microscope. Once stained, the morphology and arrangement of the bacteria may be observed as well. Furthermore, it is also an important step in the screening of infectious agents in clinical specimens such as direct smears from a patient.
The Gram stain procedure enables bacteria to retain color of the stains, based on the differences in the chemical and physical properties of the cell wall.
1. Gram positive bacteria: Stain dark purple due to retaining the primary dye called Crystal Violet in the cell wall. Example: Staphylococcus aureus
2. Gram negative bacteria: Stain red or pink due to retaining the counter staining dye called Safranin.
Example: Escherichia coli
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This just explained it to me in 4 mins what my teacher couldn’t do in an hour! Thanks a lot 😇
You're very welcome!
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Please, could you suggest me the software you are using to creat such animation videos.
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Good luck on my practical exam
Day before exam❤
About to start bsc microbiology. How was the exams?
So much faster than reading my Micro textbook... thanks a LOT, Sir 😁👍
Glad to help!
thank you sir for this video I understand this concept in just 4-5 minutes that i am trying to understand from half an hour.
The animation is great, thanks for sharing it, it will help a lot to the courses and classes that I teach at the university (UCV). I will always take it into account and generate the reference quotes for your recognition.
really thank you for such valuable information.
Glad it was helpful!
Sir Your explaining topic vry clearly & interesting way through animation, I'm B.pharma graduate, still i have doubt about staining, i understand in 4minutes. Thank u Dr. Bhanu prakash sir.
Great video with great detail. Thank you.
Excellent presentation, this will allow my students a clear understanding of how the mordant works in Gram staining. Thank you.
This explanation was just amazing. Thank you for the video
Thank u for this video....👍🔥
Thank you. It’s really helpful
Bundle of thanx for excellent presentation
Thank you for the presentation, it will be very heplful to my students ( with reference quote for you)
Ur most welcome
it helped a lot. thank you.
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Thank You Mam
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Thanks❤
Ty sir
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Thankyou so much for this video! Now I feel ready to score full in my Biotechnology Practical tomorrow! The greatest thing is not just the animation but also those little concepts in every step ! Thankyou so much once again!!
Glad it was helpful!
It indeed was !
@@doctorbhanuprakashit was really helpful thanks a lot
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Superb
Thank you it is help to us
Thank you for your presentation it is very helpful for my students to understand gram stain
It's my pleasure
Like your way of explanation...and voice
I understood thank you
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Having lab test today thank you ,stressed out right now
You got this!
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best
Very helpful
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Same 2 u maryam, do you read in 11th class?
Excellent explanation
Thank you so much!!
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Am happy to see this because am a microbiology student passed out student
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Great video👏👏,I'm sending this to my students as they had doubts on this topic
Glad it was helpful!
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A short video and useful to be learned on it
Good job 👍
Glad to hear that
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Very precise video❤
Glad you liked it
Animation are to good, Thank you👍
Glad you like them!
Great video! Thank you
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very nice slide
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This is super helpful thank you very much it really helped
Glad to hear it!
thanks for your short and précised procedure
You are welcome!
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Thanks this video help us a lot to understand 🤩
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Pls do upload all bacteria
Suree
Crystal clear
Thank u
What happens if you use acid alcohol as the decolorizing agent in spore staining?
Thank you so much for this video
Most welcome 😊
Thank you❤️👍
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thank u so much..
Welcome 😊
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Any video abt acid fast staining
thats fascinating
Tysm
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Great Explanation. Thanks...
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Tqu
During the Gram staining procedure, typically, about 2-3 drops of alcohol (ethanol or acetone) are used for the decolorization step. This is done to ensure the decolorizer spreads evenly across the slide to differentiate between Gram-positive and Gram-negative bacteria effectively. It's important to apply the drops slowly and observe the slide, as over-decolorizing can lead to false results.
Thank you sir
Welcome
Thanks you mam
Most welcome 😊
Sir i have herbal extract liquid which having bottom ppt and i want to check this ppt is by fermentattion or not so which testing is best in lab for detection can you tell me bcz i send this sample for testing
Microbiologist👍
It's really very helpful
Tysm
Excellent video
Tysm
Nicely presented,, thanks for sharing this video😊
My pleasure 😊
Nice Video Explaned in Easy way Thank You
You are most welcome
I am Bangladeshi...I am a student of microbilogy..This is very helpful video for me
Very well Explanation ❤
Glad you liked it
Why must we dilute the samples from the agar plate?
In gram staining technique what is a physical mordent?
And what is a chemical mordent?
Can any body answer??????😊
En mi experiencia realmente no es necesario cronometrar exactamente el tiempo con cristal violeta, iodo lugol y safranina debe de dejarse mínimo un minuto, pero realmente máximo tiempo no hay, y la decoloración no debe de ser hasta que deje de escurrir cristal violeta porque muchas veces y aunque se usen cepas jóvenes, se corre el riesgo de que se decolore a la fuerza, lo mejor es dejar derramar el chorrito de decolorante desde el inicio de la laminilla y permitir que llegue hasta el final de la misma, pasando por eso frotis ( que debe ser de buen tamaño y grosor) y de inmediato enjuagar. Crees ese es el "secreto" para una buena tinción.
Please tell me to prepare smear and microscopic examination of staphylococcus lactobacillus and e coli and gram staining teqniq both are same please tell me tomorrow is my practical 😭😭
Good explanation 😊❤
Thank you 🙂
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