0
Lactose is used as a selective nutrient in the agar as not all microbes can process lactose
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Lactose fermentation mac conkey test which color indicate a positive test?
MacConkey agar is yellow (due to the lactose in the agar). When an organism consumes the lactose, the agar turns purple. Purple indicates a positive test. If the organism doesn't use the agar, the agar stays yellow.
What is the color of mac conkey agar of klebsiella?
It's pink, since it can use lactose as it's nutrition source
What is Mcconkey agar media?
It's a differential agar used to differentiate between lactose fermenters and non-lactose fermenteing bacteria. Chemical composition of Mac Conkey agar Peptone 20.0g Trehalose 10.0g Bile salts(Difco) 1.5g Sodium Cloride 5.0 Neutral Red 0.05g Crystal Violet 0.001 Agar 15.0g Distelled water 1.0 liter pH: 7.4±0.2 (25 °C)
What is a Mac plate?
MacConkey Agar plate
How is the colony on Mac Conkey agar?
123kjklj
What agar plates are streaked for a wound culture?
Bap & mac only
What are the general forms of media used in a microbiology laboratory?
Physical types of media include those that are liquid, such as broths and milk, those that are semi solid, and those that are solid. Kristian F.
What is the function of the mac?
the MAC protocol is responsible for multiple access resolution.
What is the chemical composition of agarose?
It's a differential agar used to differentiate between lactose fermenters and non-lactose fermenteing bacteria. Chemical composition of Mac Conkey agar Peptone 20.0g Trehalose 10.0g Bile salts(Difco) 1.5g Sodium Cloride 5.0 Neutral Red 0.05g Crystal Violet 0.001 Agar 15.0g Distelled water 1.0 liter pH: 7.4±0.2 (25 °C)
Isolation media for actinomycetes?
the most recognized media for isolation of actinomycetes are starch casein and oat meal
Will the Brother MFC-495CW Color Multi-Function Center Printer work with a MAC computer?
Brother MFC-495CW Color Multi-Function Center Printer work with a MAC computer as it is compatible with MAC computer
Can serratia marcescens grow in mannitol salt agar?
No it doesn't because it doesn't ferment mannitol. P. mirabilis can actually grow on a MAC agar, but it is colorless. I actually had this lab in Micro260 today.An MSA agar has 7% high salt concentration and provides growth for S. aureus bacteria turning it yellow/gold. An MSA agar is selective for osmotolerant bacteria meaning for bacteria that can grow in different salt concentrations, and it's differential because it can ferment mannitol.
