Carbohydrates Report

The results for Benedict’s test for reducing sugars before hydrolysis, the control dH2O had no color change, as well as sucrose and raffinose. Gelatin became a dark blue and egg albumin a light greyish blue. Glucose yielded a dark orange, milk albumin turned orange, and starch had a yellow precipitate. In the Benedict’s test for reducing sugars by hot acid hydrolysis, the control dH2O was blue or no reaction. Glucose turned a brownish-orange; sucrose, a reddish-brown, raffinose, light pink; starch, a dark yellowish-orange; gelatin, violet; milk powder, a light yellow; and egg albumin, a greyish-violet. In the Lugol’s test for polysaccharides, the control dH2O turned yellow or no reaction, as well as glucose, sucrose, raffinose, milk powder and albumin. Starch was clear with blue-violet on the bottom (precipitate) and gelatin turned a slightly opaque white. In the test for polysaccharides remaining after hydrolysis with Lugol’s solution the control dH2O was yellow or no reaction. Glucose, sucrose, raffinose, starch and gelatin also had no reaction. Milk powder had a white precipitate and particle suspension. Egg albumin had an even greater white precipitate and particle suspension. In Biuret’s test for proteins there was no reaction for dH2O, glucose, sucrose, raffinose, and starch. Gelatin, milk powder and egg albumin all turned slightly violet with bubbles.

b) Benedict test the solution color will change from blue to pink/orange red, indicating simple sugars are present. Lugols test the solution color will change from yellowish brown to dark purple, indicating starch and polysaccharides are present. Sudan iV test the lipid content will turn into red, indicating lipids are

Did the results support or refute your hypothesis as to which test tube starch contents would convert to sugar first?

The type of sugar affects the rate of cellular respiration because each sugar is classified as either a monosaccharides, disaccharides or polysaccharides. The data from this experiment was collected by the amount of carbon dioxide produced from the type of sugar that was used. The data was then analyzed using a line graph. Data was also collected in class averages. There were three sugars in this experiment, glucose, lactose, and fructose. An example of a monosaccharides would be glucose and fructose. The slope for glucose should be about 283.07. The slope for fructose should be about 269.77. Second, an example of a disaccharides would be lactose. The slope for a disaccharide in this experiment should be about 67.055. The data shows that

The Benedict test, is a test to determine whether a solution has reducing or non-reducing sugars. If the Benedict's test is negative, that means there is not reducing sugars. Next, the Lugol's test is to determine if there is starch in a substance. If the solution is yellow or orange after a Lugol's test, that means it is negative. If the results of a Lugol's test is purple or black, then it is

What happens if you eat too few carbohydrates? What happens if you eat too few lipids?

Lactose and sucrose tests were done, which are very similar to the glucose test. The only difference is the 1% carbohydrate in the medium. For sucrose, the medium contained sucrose. For lactose, the medium contained lactose. Both of the test tubes resulted in a K result. There was no color change to yellow or any gas produced in the inverted test tube. The color did change to an unusual bright pink, but it did not turn yellow like it would have in the presence of acid.

We then recorded the initial color. We placed each tube in boiling water for one minute and recorded the color results and gave our conclusion. To test for starch using Lugol’s solution, we reused the test tubes and added a squirt of the solution. We recorded the final color and then our conclusion for each content. To test for lipids using paper towels, we placed a drop of solution and we let it stand for one minute. We then recorded our observation, if it was dry or not dry and wrote our conclusion for each sample. To test for proteins using Biuret’s reagent, we added a squirt of stock solution plus a few drops of Biuret’s solution. We wrote the initial color. We then shook the solution and waited for two minutes before recording the results. After the two minutes, we wrote the final color and conclusion for each content. For the unknowns, we wrote the odor and appearance of each content and then tested the benedict’s, starch, lipid, and protein test and wrote our conclusion.

I believe if you eat carbs in moderation they will not affect you in a bad way. However, most people overeat and do not pay attention to what they eat. The only way carbs will affect someone in a negative way is by overeating, eating the wrong carbs or if you have a certain body type and your body just does not use them the right way. Some people just never know when to stop eating. They have 3 or more plates of food full of starches and sugar. In this day and age, children, teenagers, and adults are becoming obese from eating very wrongly. I have never seen someone’s refrigerator with just pizza and frozen meals, but that is what this generation has grown accustomed to. There are 3 body types, Mesomorph, Ectomorph, and Endomorph. When endomorphs

This is because glucose is the simplest type of carbohydrate (monosaccharide). However sucrose is a

Carbohydrates are the product that made up from carbon, hydrogen and oxygen. Carbohydrates are form by the combination of carbon dioxide and water molecules. The carbohydrates contain two specific functional group in it which is the hydroxyl groups and carbonyl groups.A reducing sugar is a type of sugar with is an aldehyde group.This means that sugar can act as a reducing agent.The procces of reducing sugar is isomerisation,example of reducing sugar islactose,maltose,glucose and fructose.All monosaccharides are capable of reducing other chemicals such as copper (II) sulphate to copper oxide.Beside that disaccharides such as maltose and lactose are reducing sugar,however sucrose is non reducing

Solutions and color reaction for Benedict’s test for reducing sugars and 2 iodine test for starch

During the Benedict's test, the contents of tube B did not change, indicating the absence of sugar in that particular substance. However, the contents of tube A did change orange indicating the presence of sugar in that substance. During the Lugol's test, the content of tube A did not change dark purple indicating the absence of starch in that substance However, the content of tube B changed to dark purple

Sugars exist in solution as an equilibrium mixture of open chain and closed ring(orcyclic), strutures. sugars that can be oxidised by mild oxidising agents are called reducing sugars because oxidising agent is reduced in the reaaction. A non reducing sugar is not oxidised by oxidising agent . All common monosaccrides are reducing sugars. there are several test forr sugars which are based on composition or specific group. Hence sucrose is not a reducing agent due to bonding of oxygen with carbon to form glycosidic bonds between monosacrrides. Therefore they are not free to let go so cant be reduced , some of test includes seliwanoff 's test which distinguish between aldose and ketose sugars.Other test for sugars is benedicts test which commonly used to detect presence of

1) Monosacchrides: Mono means single and saccharides refer to sugar. These are the simple form of carbohydrates that consists carbon, hydrogen and oxygen in the ratio of 1:2:1 (Ahmed 2014).