Rehydration tests for the dried sample, Chemistry

Assignment Help:

Q. Rehydration tests for the dried sample?

• gain knowledge about the sensory changes that take place during the dehydration of the samples, and

• learn about the effectiveness of different drying techniques.

Principle

Rehydration tests for the dried materials are important as they give idea about the percentage water in the rehydrated material, rehydration ratio and coefficient of rehydration. However, no standard method for testing these are available, although are developed by the plants where the daily evaluation of quality of dried products is made.

Materials Required

Sample: Culture or dehydrated carrots or dehydrated cauliflower or dehydrated

cabbage. (Take any 3 dried sample).

Beakers - (6)

Distilled water

Filter paper

Burner

Funnel

Weighing balance

Petri dish

Procedure

The following procedure for measuring rehydration is suggested by the US

Department of Agriculture. Follow these steps and carry out the activity.

1) Weigh 2-10 g of the dry material (sample) in six beakers of 500 ml capacity.

2) Add 80-150 ml of distilled water*

3) Cover each beaker with watch glass, bring to a boil within 3 min on an electric heater/burner and continue boiling for 5 minute.

4) Filter through whatman no. 4 filter paper and drain excess water until the drip from the funnel has stopped.

5) Remove the sample from the funnel and weigh in a weighed petri dish.

6) Set the sample aside for conducting quality tests.

7) Rehydrate six other 10 g samples, boiling two for 10 minutes, two for 20 minutes, and two for 30 minutes.

8) Boiling should be carried out carefully for proper rehydration of samples.

9) Now record your observations and do the calculations as stated herewith.


Related Discussions:- Rehydration tests for the dried sample

Resonance effect.., what is resonance effect? describe its application and ...

what is resonance effect? describe its application and its types?

Bond strength in hydrocarbons, Bond strength in hydrocarbons As much sh...

Bond strength in hydrocarbons As much shorter is the bond size, the greater is the compression among molecules atomic nuclei and therefore greater is the strength of that bond.

#title.Honey ., Ask Dear Sir Greetings Please be informed that I am an expe...

Ask Dear Sir Greetings Please be informed that I am an expert in Beekeeping at my Univ. We are intending to open new Dept. under the name under Honey Bee Dept. Consequently, we ne

Heat transfer area for the production, In the Lectures where the necessary ...

In the Lectures where the necessary heat transfer area for the production of aspirin was being discussed, we had calculated (a) the volume of the scaled up version of the tank and

Xylene, How to synthesize xylene? How many methods(ways) to synthesize xyle...

How to synthesize xylene? How many methods(ways) to synthesize xylene?

When beryllium is bombarded with alpha particles, When beryllium is bombard...

When beryllium is bombarded with  α -particles, extremely penetrating radiations which cannot be deflected by electrical or magnetic field are given out. These are: (1) A beam

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd