Скачать или смотреть Food Test Practical Biology

Food Test Practical Biology Class 11. Tests for glucose, sucrose, starch, fat, and protein.
For Live Classes, Concept Videos, Quizzes, Mock Tests & Revision Notes please see our Website/App:
Our Website: http://bit.ly/2KBC0l1
Android App: https://bit.ly/3k48zdK

CBSE Class 12 Courses: https://bit.ly/4h0L7IN
CBSE Class 11 Courses: https://bit.ly/48isN9Q
CBSE Class 10 Courses: https://bit.ly/363U55V
CBSE Class 9 Courses: https://bit.ly/39Pm7mM
CBSE Class 8 Courses: https://bit.ly/3bJByzB

ICSE Class 10 Courses: https://bit.ly/2MaXpFo
ICSE Class 9 Courses: https://bit.ly/3iFV7dl
ICSE Class 8 Courses: https://bit.ly/3boM5OB

IGCSE Courses: https://bit.ly/2YNwQcn

Artificial Intelligence: https://bit.ly/3vm3FAE
Python Coding: https://bit.ly/3nX0s2y
Java Coding: https://bit.ly/3chHTAK

Facebook page: http://bit.ly/2s6VYhf

Glucose Test: For glucose, the Benedict's test is used. A small amount of the food extract is placed in a test tube, followed by the addition of Benedict's solution. The mixture is then heated in a water bath for about five minutes. If glucose or another reducing sugar is present, the solution changes color from blue to green, yellow, orange, and finally forms a brick-red precipitate.

Sucrose Test: Sucrose, being a non-reducing sugar, requires hydrolysis before testing. A sample of the food extract is boiled with a few drops of dilute hydrochloric acid to break sucrose into glucose and fructose. The solution is then neutralized using sodium hydroxide. The Benedict's test is performed afterward. A brick-red precipitate after this process indicates the presence of sucrose.

Starch test: To test for starch, iodine solution is used. A small amount of the food extract is mixed with a few drops of iodine solution. If starch is present, the mixture turns blue-black. This is a simple and quick test to detect starch in food samples.

Fat or Oil Test: In the grease spot test, the food sample is rubbed onto a piece of filter paper. If fat is present, the paper becomes translucent when held up to the light.

Protein Test: The Biuret test is used to detect proteins. A small quantity of the food extract is treated with sodium hydroxide solution, followed by a few drops of copper sulfate solution. If proteins are present, the mixture changes to a violet or purple color. This color change confirms the presence of peptide bonds in the protein molecules.

At Manocha Academy, learning Science and Math is Easy! The school coursework is explained with simple examples that you experience every day! Yes, Science & Math is all around you! Let's learn every day from everyday life!