Bomb calorimeter, Biology

Assignment Help:

Bomb Calorimeter

Energy intake is the chemical energy content of ingested food over a given period. Energy loss is the chemical energy that remains in faeces and urine produced by the animal over the same period. The energy content of food and wastes is found out by burning them in a bomb calorimeter. The material to be tested is placed and burned with the aid of oxygen in a chamber surrounded by jacket of water. The heat produced is determined by the rise in temperature of the surrounding water. Table provides the caloric value of the common food stuffs estimated in bomb calorimeter and in the body.

 

623_Bomb Calorimeter.png

Figure:Bomb Calorimeter

These values are essentially average values. During oxidative degradation in animal body, carbohydrates and lipids are fully oxidised to carbon dioxide and water just as in a bomb calorimeter but proteins are not degraded because the major end-product of protein metabolism, is urea which still possess some energy. Accordingly, the value is lower in the body (4.1 kcal/g) as you can see from Table. Energy derived from one gram of fat is much more than that derived from 1 gram of protein or of carbohydrate.

Table:  Fuel Content of Food Materials

16_Bomb Calorimeter 1.png


Related Discussions:- Bomb calorimeter

Explain the observation or inference for seliwanoff test, Explain the Obser...

Explain the Observation or Inference for seliwanoff's test? 1. Wine or cherry red colour seen. Wine red colour confirms the presence of a ketose sugar. Note: On overheating

Explain recovery or anabolic phase of stress response, Explain Recovery or ...

Explain Recovery or Anabolic Phase of Stress Response? When wounds are closed and infection has resolved, repletion of lean tissue and fat stores along with restoration of stre

Quaternary structure of protein, Quaternary Structure (4 o Structure)....

Quaternary Structure (4 o Structure). Globular in structure. When two or more than two molecules of protein of tertiary structure are connected to each other through

Pseudopodia – protozoans, Pseudopodia – Protozoans Pseudopodia are flo...

Pseudopodia – Protozoans Pseudopodia are flowing cytoplasmic protrusions of the cell causing amoeboid movement. In protozoans pseudopodia exist in several forms. The most fami

What is the genetic code, What is the genetic code? Genetic code is the...

What is the genetic code? Genetic code is the key for the conversion of DNA nucleotide sequences (and therefore RNA nucleotide sequences) into amino acids sequences that will c

Explain the process of canning, Explain the Process of Canning? The bas...

Explain the Process of Canning? The basic principles of canning have not changed dramatically since Nicholas Appert and Peter Durand developed the process. Heat sufficient to d

What are the soil-forming factors, What are the soil-forming factors Th...

What are the soil-forming factors There are many degrees or variations of soil-forming factors, and the potential for creating different kinds of soil is enormous. However, whe

Explain the food applications of gum arabic, Explain the Food Applications ...

Explain the Food Applications of Gum Arabic A major use for gum Arabic is in the confectionery industry where it has two important functions; to retard or to prevent crysta

Discontinuous variation in human populations, Give two examples in each cas...

Give two examples in each case of (a) continuous, (b) discontinuous variation in human populations.    a) Continuous variation: for example, weight, height, intelligence, ha

Explain adverse effects, Explain Adverse Effects Fluconazole is genera...

Explain Adverse Effects Fluconazole is generally well tolerated. Gastrointestinal distress and rash can happen. Stevens-Johnson syndrome, anaphylaxis and hepatic necrosis have

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