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The methylene blue reduction test is based on the fact that the color imparted to milk by the addition of a dye such as methylene blue will disappear more or less quickly. The removal of the oxygen from milk and the formation of reducing substances during bacterial metabolism causes the color to disappear. The agencies responsible for the oxygen consumption are the bacteria. Though certain species of bacteria have considerably more influence than others, it is generally assumed that the greater the number of bacteria in milk, the quicker will the oxygen be consumed, and in turn the sooner will the color disappear. Thus, the time of reduction is taken as a measure of the number of organisms in milk although actually it is likely that it is more truly a measure of the total metabolic reactions proceeding at the cell surface of the bacteria.
What else can I help you with?
What is the colour of blue litmus paper in milk of magnesia?
Blue litmus paper remains blue when dipped in milk of magnesia because milk of magnesia is basic in nature.
What colour does red and blue litmus paper turn with milk?
Red litmus paper will turn blue in the presence of milk, indicating a basic pH. Blue litmus paper will remain blue, as milk is not acidic enough to change its color.
What liquid will sink in milk?
well jaz has a penholder n it has a blue liquid that sinks to the bottem of water with a silver glaze on the top of the blue liquid, it must be like a heavier more solid liquid
What are the uses of lactometers?
A Lactometer is a little glass instrument that tests the purity of milk based on density/buoyancy and works on the principle of the specific gravity of milk. It is based on the Archemedes' principle. When we put loctometer inside the liquid it experience buoyant force(weight of displace fluid). Hence measure relative density in the given scale of loctometer. Lower the density of liquid farther, the loctometer will sink.
What colour should the universal indicator turn when mixed with milk?
The universal indicator can turn a range of colors when mixed with different substances, depending on the pH level. When mixed with milk, the indicator may show a color within the range of green to blue, indicating a slightly alkaline pH due to the presence of proteins and minerals in milk.
What food can methylene blue be used in to detect bacteria quickly?
Methylene blue reduction is the method used to measure the bacterial density in milk. The test is evaluated in term of the amount of time required from introduction of the blue until the milk turns white.
What happens when milk is added to methylene blue?
it spoils the milk because of the chemicial reaction
What happens when methylene blue is added to stale milk?
it spoils the milk because of the chemicial reaction
Can methylene blue be used in other food besides milk?
Yes, methylene blue can be used in many foods, as it in non-toxic to humans (though it can discolor urine). Methylene blue was used by Italian actor and gourmand, Ugo Tognazzi for his risotto alla parmigiana (risotto blu). He added methylene blue to the standard ingredients (butter, onions, Parmesan cheese, and white wine), turning it into a rather striking "blue risotto."
What function of emb agar?
EMB agar is used for the selective and differential isolation of fecal coliforms, particularly Escherichia coli, in water, milk, and other biological material. It contains lactose, eosin, and methylene blue dyes that inhibit the growth of Gram-positive bacteria and help differentiate lactose fermenters (such as E. coli) that produce dark colonies with a greenish metallic sheen.
What is the principle of lactometer?
A Lactometer is a little glass instrument that tests the purity of milk based on density/buoyancy and works on the principle of the specific gravity of milk.
What is the colour of blue litmus paper in milk of magnesia?
Blue litmus paper remains blue when dipped in milk of magnesia because milk of magnesia is basic in nature.
How is Archimedes principle used in Lactometer?
Archimedes' principle is used in a lactometer to measure the specific gravity (density) of milk. The principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object. By placing the lactometer in milk, the volume of milk displaced by the lactometer can be measured, which allows for the specific gravity of the milk to be calculated.
How do you use ginger juice with milk for weight reduction?
suck it u freak
What is the difference between blue and green top milk?
Blue topped milk is more fat, when the green top milk is semi-skimmed milk which means less fat.
How do you test the purity of milk using Archimedes principle?
Lactometer is a device used for finding the purity of a milk sample. It works on the principle of Archimede's principle that a solid suspended in a fluid will be buoyed up by a force equal to the weight of the fluid displaced. If the milk sample is pure, then the lactometer floats on it and if it is adulterated or impure, then the lactometer sinks.
When was Blue Wonder Power Milk created?
Blue Wonder Power Milk was created on 1998-08-11.
