Define steps in the development of exchange list, Biology

Assignment Help:

Define Steps in the Development of Exchange List?

As mentioned above, when we group together similar food items so that each supplies a constant amount of a particular nutrient, we call the group a food exchange. Given herewith are the steps which when followed, will guide you in developing the exchange list. You will realize that developing an exchange list for Indian foods is a difficult task as our dishes defy any attempt at standardization.

1) An important first step in developing an exchange list is the standardization of serving or portion sizes. The portion sizes vary considerably in India. ldlis, dosas, chapattis and puris of different sizes in different states and in different households is a common scene. Despite this, some attempts have been made to define portion sizes.

2) The second step is to calculate the energy, carbohydrate, protein and fat content of one serving or portion size of the different dishes. This can be done by converting the cooked weight of one serving of a dish into raw weight of the T ingredients that have gone into it. Although allowances should be made for cooking losses, this has not been done. Future exchange lists must take care of this. From the raw weights of the ingredients in one serving and using the Indian Food Composition tables, the energy, carbohydrate, protein and fat content of one serving can be calculated.

3) The third step is to create an exchange list of different dishes in terms of standard portion sizes that would provide approximately the same energy or carbohydrate or fat as the case may be. Since foods contain widely varying amount of the macronutrients, serving or portion sizes are defined for a group of more or less homogeneous foods. For example, all cereals provide approximately the same number of calories, approximately 350 per 100 g raw weight and about the same amount of carbohydrates, about 70 g per 100 g raw m weight. Therefore, cereal exchanges are grouped together. Similarly, there are vegetable, fruits, milk and meat exchanges. Within each of these food groups, the composition of the different items in terms of carbohydrate, protein and fats remain similar.


Related Discussions:- Define steps in the development of exchange list

Ammonification, Ammonification Many heterotrophic bacteria actinomycet...

Ammonification Many heterotrophic bacteria actinomycetes and fungi in soil and water metabolise the organic nitrogen and release it in an inorganic form as ammonia. This proce

How does the federal government regulate plant-incorporated, How does the f...

How does the federal government regulate plant-incorporated protectants and ensure their safe use in foods? EPA regulates the manufacture, sale and use of pesticides, containin

Determine the neuropsychological assessment, Determine the Neuropsychologic...

Determine the Neuropsychological assessment  Neuropsychological assessment typically involves the functional areas of general intellectual capacities; memory; speed and accurac

Explain the management strategies congenital heart disease, Explain the Man...

Explain the Management Strategies for Adults with Congenital Heart Disease ? The goals for management of congenital heal disease in adults are improving upon the natural histo

What is primary structure of a protein, Q. What is primary structure of a p...

Q. What is primary structure of a protein? What is the significance of the primary structure? The primary protein structure is the linear sequence of amino acids that outline t

Is the edible part of the onion a fruit, Are fruits always the flesh part o...

Are fruits always the flesh part of the "fruits"? Is the edible part of the onion a fruit? In some so-called fruits the actual fruit is not the flesh part. For instance, the fl

Role of echocardiography, Echocardiography is a very important tool in diag...

Echocardiography is a very important tool in diagnosis of cardiovascular diseases and is used  virtually in all categories of cardiovascular diseases. There are certain areas where

Process of conducting system of the heart, Impulses reaching the AV node fr...

Impulses reaching the AV node from the atria are delayed a little as they pass through the trunk and crura. The impulses first reach the papillary muscles and their contraction clo

State the symptoms of epilepsy, State the symptoms of epilepsy Three p...

State the symptoms of epilepsy Three particular symptoms are found in many types of epilepsy: 1) An aura, or warning, of impending seizure: This aura may take the form of a

Process of regeneration in planarians, Process of Regeneration in Planarian...

Process of Regeneration in Planarians Regeneration in planarians has been broadly studied and considerable information regarding this phenomenon is now available. Let us see w

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