This website uses cookies to ensure you have the best experience. Learn more

Experiment On Food Test Essay

907 words - 4 pages

In this experiment I had to do a food test on a variety of foods such as Apple, Celery, Bread, Biscuit, Cheese, and Milk mixing or combining with the Iodine solution, Sodium Hydroxide solution and Copper Sulphate solution. From that It allowed me to see if there are any changes to the foods when adding the solutions. The most important part when doing this food test was I had to investigate it safely and efficiently followed by the health and safety rules so that I carry out my experiment in a correct way and therefore my results can be accurate enough.

I had to follow the health and safety rules as it was very important for me to follow them when doing the food test experiment. This is ...view middle of the document...

fold the paper over the food substance and press down. Examine the filter paper and
record your findings. A colourless stain that doesn't dry indicates the presence of fat.

Below is a result table showing the results of the investigation
Food taken
Iodine solution

Sodium Hydroxide and Copper Sulphate solution

Contain fat or not
No colour change normal
No colour change
Does not contain fat
No colour change normal
No colour change
Does not contain fat
Yes colour change to black which is starch
No colour change
Does not contain fat
Yes colour change to black which is starch
No colour change
Contains fat
No colour change
Colour change to purple which is protein
Contains fat
No colour change
Colour change to purple which is protein
Contains fat

As you can see from the above experiment for the iodine solution I have found out that the colour changes to black in the bread and in the biscuit because starch is presented there . The amylase in starch forms helices where iodine molecules assemble forming a black colour. When starch is broken down into smaller carbohydrate units, the black colour is not produced. Whereas for the milk, cheese celery and apple does not change its colour when adding the iodine solution because there are no starch in it.

Then after I finished testing for the Iodine solution, I had to throw the foods and clean the white tile and test tubes and bring in the new foods again for the Sodium Hydroxide and...

Other Papers Like Experiment on Food Test

Reactions Lab Report

2037 words - 9 pages experiment depended on it. After the ten minutes were concluded, we found that the part of the nail that was revealed to the solution had turned red and rusty. Our next test was for magnesium ribbon. The substance was silver and solid. We were to do the experiment by placing magnesium ribbon over a Bunsen burners flame using tongs. Before commencing the experiment we ensured that our materials were both in order as well as clean. After

Investigating The Optimum PH Bacterial And Mammalian Amylase Digests Starch Solution

1647 words - 7 pages test I will do this by using the same 2cm³ syringe washing it out thoroughly before re-use. For the temperature I will control it by conducting my experiment at room temperature using a thermometer to check that it stays constant. Another variable is the substrate concentration. In my case the substrate is starch, to control this variable I will use the same concentration of starch as I have to make two different

Enzyme Reaction

1106 words - 5 pages estimate the rate of the reaction (how rapidly the solution bubbles) on a scale of 0-5 (0=no reaction, 1=slow, ..... 5= very fast). Assume that the reaction in step 2 proceeded at a rate of "4" Recall that a reaction that absorbs heat is endothermic; a reaction that gives off heat is exothermic. Now, feel the temperature of the test tube with your hand. Has it gotten warmer or colder ___________ Is the reaction endothermic or

The Action Of Saliva On Starch

1107 words - 5 pages Experiment 9. The action of saliva on starch Study the flow chart on p. 9.02 for a few minutes to gain an idea of the outline of the experiment. (a) Prepare a water bath by using a Bunsen burner to heat some water in a beaker on a tripod and gauze till it boils; then turn the flame down to keep the water just boiling. While waiting for the water to boil, carry on from (b). (b) Label eight test-tubes 1 - 8 and in tube 1 collect saliva

Bio 101 Evolution Lab

907 words - 4 pages , Darwin Island capped out at 689 birds and Wallace Island ended up with 1458 birds. Wallace Island was twice as big as Darwin Island and was able to sustain twice the population. In the second test, Wallace Island had twice the precipitation as Darwin Island did, allowing a more diverse food source than Darwin Island. As a result, beak size on Darwin Island steadily increased over the years at a rate greater than that of Wallace Island. After 300

Popcorn Experiment

2111 words - 9 pages hypothesis that freezer stored kernels would have less popped kernels than room temperature stored kernels. Thus, the original hypothesis was confirmed. The experimental design, which was used in this experiment, is significant for the scientific community. The design concentrates on how normal household food products can be affected by temperature. The design used for this experiment can be used on all sorts of food products. The design is significant

Environmental Science Lab

4091 words - 17 pages regular basis to keep local drinking water safe for the public. Some of these chemical regulations include lead, chromium, selenium and arsenic. Other components such as smell, color, pH and metals are also monitored to ensure residents are provided clean and safe drinking water. 26 Water Quality and Contamination Experiment 1: Effects of Groundwater Contamination In this lab you will test the effects of common pollutants on groundwater. When

Bean Discrimination Experiment for Reproduction of Bean Beetles

1227 words - 5 pages based on color and could provide protection from predators. The hypothesis is the experiment was rejected because the critical value derived the significance a of the test. The null was rejected with a = 0.05. With 2 degrees of freedom and the p-value produced critical value of 5.991 and the calculated being 68.9. It makes the calculated greater than the critical and therefore, the null is rejected. The results that impacted this experiment

Intro to Human Brain

1201 words - 5 pages obesity. Thus, the researchers will test for the effects of extended consumption of high-energy foods and the addictive behavior of this food consumption in rats. 2. What are their one or two principal experimental methods? The authors tested the rats by a brain-stimulation reward (BSR) procedure where they were trained for 10-14 days to run on a cycle that shocks the brain of the rat which rewards them for the behavior. The BSR sets the

Hydrogen Peroxide Investigation

822 words - 4 pages . The dependant variable in this experiment will be the amount of oxygen produced. This will be measured using gas syringe (cm3) as it is accurate. Method Collect all equipment needed for the experiment Place the five test tubes into the test tube rack and label them using the marker pen with the letters A, B, C, D and E. Check to see that the bung on the gas syringe fits the test tubes. If it does not then

Amylase Investigation

1526 words - 7 pages Amylase Investigation Planning We were asked to investigate how enzymes work in different conditions for out investigation. Enzymes, also called catalysts, are in living things and there are thousand of them. Enzymes break down food by the active site on the Enzyme forming a chemical bond with a substrate and then water attacks the substrate until it is hydrolysed (split in 2). Enzymes are very specific as only

Related Essays

The Tares Test Of Ethical Advertising On Fast Food Companies

1394 words - 6 pages understanding the product. Finally, the S in the TARES Test stands for social responsibility. Looking at the TARES test, advertisers and marketers can be responsible for each part when it comes to advertising to children.The TARES Test on Fast Food Companies Advertising to ChildrenI do not believe that the TARES test is followed in regards to advertisements of fast food products towards children. From the start the first part of the test, is the

Cabohydrates Essay

1806 words - 8 pages molecule serve its own special purpose. Molecule can be divided into two types, macromolecules and micro molecules. The molecules that we are studying in this experiment are macromolecules. In this case, we are studying on 3 types of macromolecules, carbohydrates, protein and lipid that present in different food. Carbohydrate can be divided into monosaccharide, disaccharide and polysaccharide. Monosaccharide is the simplest sugar that appears in

Chemistry Quantitative Analysis

2570 words - 11 pages . You also have to use the same amount of drops of phenolphthalein indicator and the same amount of the other chemicals in your experiment or the solution will be slightly different and the experiment will not be accurate. Task 3 PART B TASK 1 Flame test 1. Place a Bunsen burner on a heat proof mat and light it, making sure the air inlet is closed. 2. On a small watch glass place a spatula full of test metal, then place this

Cellular Respiration Essay

611 words - 3 pages perform aerobic cellular respiration for a long duration of time. The type of food source can affect the rate as well if the substance is high in sugars then the respiration will happen more easily, where if the cell was trying to perform cellular respiration on carbohydrates whose bonds are harder to break. Materials Yeast in water Molasses Graduated cylinder 100 mL 10 Large test tubes 10 Small test tubes 1 Rubber stopper Centimeter ruler Pen / pencil Beaker Test tube rack Sucrose Tape