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I know that with Fructose it turns red and forms precipitate
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Why is Benedict's test unreliable?
its because Benedict's test only gives a possible test for reducing sugars (all monosaccharides, maltose and lactose).
What is difference between lactic acid and lactose?
If we are talking about distinguishing between the two solutions then, Carry out a Benedict's test on both solutions; Results: Lactose solution would give a brick-red/brown precipitate (positive test) Sucrose solution would give negative test result while sucrose is a non-reducing sugar which does not react with Benedict's reagent.
What is the role of water in the Benedict reagent?
It acts as a control for the experiment so that you can compare the result (of benedict's test in water) with the other test (using food with sugar)
Does Benedict test indicate monosaccharides polysaccharides and disaccharides?
The Benedict test is useful for monosaccharides and disaccharides.
What type of is saccharide has no change when tested with benidicts solution?
Starch doesn't react in the Benedict test.
Why is Benedict's test unreliable?
its because Benedict's test only gives a possible test for reducing sugars (all monosaccharides, maltose and lactose).
Give result lactose test for bacteria citrobacter diversus?
lactose fermenter
What is difference between lactic acid and lactose?
If we are talking about distinguishing between the two solutions then, Carry out a Benedict's test on both solutions; Results: Lactose solution would give a brick-red/brown precipitate (positive test) Sucrose solution would give negative test result while sucrose is a non-reducing sugar which does not react with Benedict's reagent.
What is the role of water in the Benedict reagent?
It acts as a control for the experiment so that you can compare the result (of benedict's test in water) with the other test (using food with sugar)
Why is the Benedict test not exclusive to glucose?
The Benedict test will return a positive value for any reducing sugar. It will work with fructose, for example. Benedict solution oxidizes all the reducing sugars such as glucose, galactose and fructose. This implies that a positive result of Benedict's test can be any of the reducing sugars, not necessarily glucose. It will oxidize the carbonyl (which present in all type of sugar classes). So if we get a positive result in the Benedict test, it is not necessarily glucose; it could be galactose or fructose that also a reducing sugar. So Benedict test can't be used to assure glucose.
What is done in a Benedict test?
The Benedict test is a chemical test used to identify the presence of simple sugars such as glucose, fructose, and lactose. It is a qualitative test that is used to differentiate between monosaccharides and disaccharides. To perform a Benedict test, a sample is mixed with Benedict's reagent, which is a solution of sodium citrate and copper sulfate. The mixture is then heated and the formation of a red-brown precipitate indicates the presence of one of the three simple sugars. The following list describes the specific tests used to identify each of the sugars: Glucose Appearance of a brick-red precipitate Fructose Appearance of an orange-red precipitate Lactose Appearance of a yellow-brown precipitateThe Benedict test is a simple, inexpensive, and reliable way to identify the presence of simple sugars in a sample.
Does starch gives positive result for Benedict test?
Starch is made up of repeating glucose units. Though it is a non reducing sugar, its hydrolysis gives out pure glucose, which is known as dextrose. And glucose, as we know, is a reducing sugar and hence would give a positive result in Benedict's test.
Does lactose can give a positive result in xanthoprotein test?
nitration of the benzene ring and gives positive
How would you determine if you had diabetes using the benedict's solution test?
if you have reddish brown result.
What is the positive result for mucic acid test?
When galactose is oxidized by nitric acid, insoluble mucic acid is formed. A positive result is the formation of a precipitate. Lactose is a dimer of glucose and galactose. The nitric acid will hydrolyze the dimer and so lactose will also give a positive result.
What test is used to test for sugars in a food?
Benedict's test using Benedict's Solution.
What is a positive test for carbohydrates?
These are the carbohydrate tests that would give a positive result on maltose: 1.Molisch test 2. Fehling's Test 3. Benedict's Test 4. Nylander's Test 5. Tollen's Test 6. Seliwanoff's Test 7. Barfoed's Test
