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Q. Can you explain Lane and Eynon method?
Reducing sugars are those, which have free sugar groups (e.g. glucose, fructose etc.) and hence may be estimated directly by titrating the solution of the sample with Fehling's solution. Total sugars include both reducing and non-reducing sugars. Non-reducing sugars (e.g. maltose, lactose, sucrose etc.) do not contain free sugar groups and cannot reduce Fehling solution. Hence, non-reducing sugars must be hydrolyzed to monosaccharides by heating with acid before titration.
Reducing sugars are acted upon by the alkali of the Fehling solution to form enediols. These enediols are very unstable and reactive and they reduce Cu²+ ions to Cu+ ions.
These Cu+ ions combine with hydroxyl groups to form cuprous hydroxide, which on heating gives red precipitate of cuprous oxide. To get a sharp end point, methylene blue is added which is reduced to a colourless leuco compound restoring the red colour of the solution. Sodium potassium tartarate keeps the Cu²+ ions in the solution, thus ensuring a continuous supply of Cu²+ ions for reduction.
Effect of processing on mineral content of foods Minerals are comparatively stable under processing conditions such as heat, light, use of oxidizing agents and extremes in pH.
To prevent and control Staphylococcal food poisoning: • Avoid contamination of foods • Kill organism by heating, refrigeration • Personnel hygiene • Adequate cookin
What are the noteworthy features of the nervous system of arthropods? In arthropods the nervous system has more complicated sensory receptors with well-advanced cephalization.
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sturucture explain
What is Subphylum Crustacea and Subphylum Uniramia? The Arthropoda are usually grouped into four subgroupings called subphyla (singular-subphylum). One of these four subphyla -
Q.How is it produced and what is the function of cholecystokin in the digestive process? The fat level of the chyme detected in the duodenum stimulates the secretion of cholecy
Removable soft tissue-borne partial dentures have one of the lowest patient acceptance rates in dentistry. Those patients wearing the partial dentures often exhibit greater mobilit
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The treatment of hyperlipidemia requires two approaches: Therapeutic lifestyle changes (TLC) and medications. To achieve target LDL levels, most patients need both approaches si
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