Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Define the Fehling's Soxhlet method (Lane-Eynon method)?
This is a titrimetric method that is commonly used in food laboratories to estimate percentage of reducing sugars and total sugars. The method is also applicable to biological fluids like milk. The Lane-Eynon method is a titration method of determining the concentration of reducing sugars in a sample. A burette is employed to add the carbohydrate solution being analyzed to a flask consisting of a fixed amount of boiling copper sulfate solution and a methylene blue indicator.
The decreasing sugars in the carbohydrate solution react along with the copper sulfate present in the flask. Once all the copper sulfate in solution has reacted, any further addition of reducing sugars causes the indicator to change from blue to colourless. The volume of sugar solution needed to reach the end point is recorded. Reducing sugars like glucose, fructose, galactose, lactose and maltose can be estimated by direct titration. Non-reducing carbohydrates like sucrose, dextrins and starches cannot be directly estimated by this method. They have to be hydrolyzed into reducing monosaccharides and then estimated titrimetrically. The Fehling Soxhlet method or lane Eynon method is based on oxidation-reduction reaction. You are already familiar with oxidation-reduction tests used for identification of reducing sugars. The basic principle is that sugars in alkaline medium form enediols which reduce cupric ions to cuprous ions. In turn, sugars are oxidized to a mixture of sugar acids.
Structural Features of Viruses Size of Viruses Virus particles vary widely in size. The smallest viruses e.g. virus of foot and mouth disease measuring about 20 mill mic
Explain Positive Staining Technique? Here, a stain has a positively charged chromophore that gets attached to the negatively charged outer surface of the microbial cell and thu
Q. What are the main manifestations of leishmaniasis? There are two key forms of leishmaniasis: visceral leishmaniasis and cutaneous leishmaniasis (also known as kala-azar). Th
What is an example of a hypothesis which may explain why there is not a big representation of the class Reptilia found in polar regions? Beings of the class Reptilia are abunda
Vitality and Vigour - Qualitative Characters Vitality is related to the condition of a plant and its capacity to complete its life cycle, while vigor refers more specifically
Q. What is the fundamental difference between algae and protozoans? The basic difference between algae and protozoans is the fact that algae are photosynthetic autotrophs while
Q. What do you mean by Transition Period? The transition period from the Renaissance to the Modern period produced many notable workers and much literature. Botanists gradually
sub classes of class pisces
A drug has a molec. weight of 200. How many grams would you use to make 100 ml of a solution that is isotonic (for man)? Assume that the diluent is distilled water and that the dru
What do you mean by Acute Pericarditis? Ans. Acute pericarditis is defined as acute inflammation of the pericardium and is clinically characterized by chest pain, fever, t
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd