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Components of Food

What is Food?

Food is a material comprising basically of protein, sugar, and fat utilized as a part of the body of a living being to manage development, repair, and fundamental procedures and to outfit vitality. It is an inorganic substance consumed by plants in vaporous shape or water arrangement

Food is a nutritive substance taken by a life form for development work, repair and keeping up life forms. Food is a sort of fuel for the living things. Similarly as petroleum fuel for our auto, similarly, food is a fuel for our body.


We must eat to provide us energy s known as staple food. The study of compositions of food materials and the quantities of food materials required by our body for growth, maintenance and survival is called Nutrition. A nutrient is an organic a or inorganic substance needed for the survival of a living being.

Components of Food

The primary parts of foods are starches, protein, fats, vitamins and minerals. These are called supplements.


Carbohydrates: Carbohydrates are also called energy giving food. It is the primary sources of energy. It is made up of carbon, hydrogen, and oxygen. There are three types of carbohydrates.


Protein: A protein molecule is composed of a large number of smaller fragments called amino acid. The daily requirement of protein for adults is 1 gram per kilogram of the body weight. When the body is building new tissue, more proteins are needed, so growing children and pregnant lady need more protein.

Protein helps in body development and repairs the tissues, so it is additionally called weight building food. We get protein from drain, eggs, meat, fish and a wide range of the beat.


Fat: The body uses this stored fat for producing power as and when required so fat is considered as energy bank in our collection. Fats are essential for the absorption of vitamins A, D, E and K in the body.

Fats are made up of carbon, hydrogen and oxygen. Butter, ghee, milk, egg yolk, nuts and cooking oils are the significant sources of fat in our food. An adult needs about 35 g fat every day. Our body stores the abundance vitality of fat. Fat in our body likewise keeps warm misfortune from the body surface.


Vitamins: It does not provide energy. Our body requires vitamins A, C, D, E, K, and B-complex. Our accumulation can make just two vitamins, Vitamins D and K so different vitamins must be available in our food.

Vitamins are involved natural mixes which are fundamental to the development and upkeep of our body. The B complex vitamin is a blend of a few water-solvent vitamins. The basic vitamins in this gathering are the vitamin B1 B2 B3 B4 B6 B9 and B12.


Minerals: Our body requires minerals in minimal quantities. Iron, Iodine, calcium, phosphorus, sodium and potassium are common minerals. The sources of these animals are plants and animals.


Dietary Fiber: It attaches bulk to the list and gives a sense of completion after the meal. Salad, vegetables, sprouted grains and fruits are the sources of roughage.The fibrous, indigestible material present in any food is termed as dietary fiber or roughage. It helps in preventing constipation.


Balanced DietIt should provide the required energy. Deficiency of one or more nutrients in our food for a long time may cause specific diseases or disorders.The diet which contains all the essential nutrients in the right proportion is called a balanced diet.The food we eat must have every one of the supplements.


Deficiency Diseases

Vitamins/Minerals Deficiency Diseases Symptoms
Vitamin A Night blindness Poor vision, loss of vision in darkness
Vitamin B1 Beriberi Weak muscles, fatigue
Vitamin C Scurvy Bleeding gums
Vitamin D Rickets Bent bones
Calcium Osteopathic Weak bones, tooth decay
Iodine Goiter Swelling in neck
Iron Anemia General weakness, fatigue


Carbohydrates additionally arrive in a sort of structures. The most well-known and copious structures are sugars, strands, and starches. Sustenance high in carbohydrates are a fundamental piece of a solid eating regimen. Carbohydrates give the body glucose, which is changed to vitality used to help substantial capacities and physical movement. Be that as it may, sugar quality is fundamental.

A few sorts of starch-rich nourishment are superior to others:

Natural or insignificantly handled entire grains, vegetables, organic products, and beans—advance great well being by conveying vitamins, minerals, fiber, and a large group of imperative supplements.

Unhealthier wellsprings of carbohydrates incorporate white bread, cakes, soft drinks, and other profoundly handled or refined sustenance. These things contain effortlessly processed carbohydrates that may add to weight pick up, meddle with weight reduction, and advance diabetes and coronary illness.


The carbohydrates in our sustenance are acquired mostly from the plant’s birthplaces like wheat, rice maize, potatoes, potatoes, sago (Sabu-dana), peas, beans& natural product. Mile likewise contains a sugar called lactose. The sugar is likewise acquired from sustenance. The world’s three driving oat crops (or dull sustenance) which give us carbohydrates are wheat rice and maize.

In the words, wheat rice& maize is rich in starch. Our of these, sustenance from wheat is set up as roti, bread. Rice is utilized in that capacity or in or indifferent another kind of nourishment stock like repetition learning, bread, noodles, rice, dosa, idli, potatoes. as opposed to top off on vegetables – which have been found to advance weight pick up – pick beans for an incredible wellspring of gradually edible carbohydrates. Grains and elective vegetables, for example, chickpeas furthermore give a sound measurement of a macro molecule. They decided in a wide exhibit of both sound and unfortunate nourishment—bread, beans, drain, popcorn, potatoes, treats, spaghetti, sodas, corn, and cherry pie.



Proteins are expansive, complex atoms that assume numerous basic parts in the body. They do the majority of the work in cells and are needed for the structure, capacity, and direction of the body’s tissues and organs.

Proteins are comprised of hundreds or thousands of littler units called amino acids, which are connected to each other in long chains. 20 distinct sorts of amino acids can be consolidated to make a protein. The arrangement of amino acids decides every protein’s interesting 3-dimensional structure and its particular capacity.

Firstly because proteins are insoluble in water and further because they are very complicated molecules. When the food is absorbed in the small intestine, the proteins present in the food are broken down into simpler substances called amino acids. The amino acids are water soluble and less complex molecules.

We shall now describe what happens when we consume a protein-containing food. It should be noted that our body does not use the proteins consumed in our diet in their original from. This is because of two reasons. The amino acids thus formed are absorbed from the intestine into the blood. The blood carries these free amino acids to the various body cells where they are regrouped to form specific proteins such as skin, muscle, blood & bones.


We can get proteins from plant sources as well as animal sources. Some of the plant proteins are; Ground-nuts, Beans, Whole Cereals like
Wheat and Maize, and Pulses. Some of the best sources of animal proteins are; Lean Meat (meat without fats), Fish, Eggs, Milk and Cheese, Fish and seafood, Nuts and seeds, Soya.

Pork contains branched-chain amino acids (BCAAs).
Beans and pulses are excellent, cheap protein sources. They are also a good source of iron and fibre.

These are all bodybuilding foods. The most valuable proteins are found in milk, eggs. They contain all the amino acids required by our body. Children mainly need These proteins.

Some Important proteins and their Functions

The properties or capacity of sustenance proteins rely upon the amino acids of which they are made a few proteins contain all the amino acids required by our body though others incorporate just some of them. A portion of the basic kinds of proteins required by our body is; Enzymes, Hormones, Transport proteins, contractile proteins, auxiliary proteins and Protective proteins.

  1. The capacity of chemical proteins is to catalyze the biochemical response to processing occurring in the body. Pepsin and trypsin are catalyst proteins.
  2. The motivation behind hormone proteins is to manage the different body capacities. Insulin is a protein hormone.
  3. The part of transport proteins is to convey diverse substances from the blood the different tissues of the body. Hemoglobin is a case of transport proteins
  4. The motivation behind contractile proteins is to help in the withdrawal of muscles and different cells – of our body. Imposing and Actin are contractile proteins
  5. The utilization of auxiliary proteins is to frame the essential components of the cells and tissues of our association. Collagen is a case of basic proteins.
  6. The capacity of defensive proteins is to help battle disease in our body. Gamma globulin exhibit in blood is a case of protecting proteins.


Fats are esters of large string fatty acids and alcohol called glycerol. They made the same three elements, hydrogen, and oxygen, of which the carbohydrates are assigned. The difference lies in the fact that fats contain less proportion of oxygen as consists of three molecules of a fatty acid and one molecule of glycerol.

In fact, fats provide twice as much energy as that offered by the same amount of carbohydrate. The fats give more power than carbohydrates because fat molecules contain a higher percentage of carbon and hydrogen but less percentage of oxygen than that of carbohydrates. Fats are the most abundant source of energy to our body, but they are more expensive than sucrose. Fats can also store in the body for subsequent use. The fats present in our food cannot be absorbed by our body as such because they are involved organic molecules which are insoluble in water.


Sources of Fat

The avocado is not quite the same as most different natural products.

  1. Cheese is unfathomably nutritious.Dark chocolate is one of those unique well-being nourishment that taste extraordinary.
  2. Entire eggs used to be viewed as undesirable on the grounds that the yolks are high in cholesterol and fat.
  3. One of only a handful couple of creature items that the vast majority concur is solid, is greasy fish.
  4. Nuts are incredibly sturdy.Another fatty food that almost everyone agrees is healthy, is extra virgin olive oil.
  5. Chia seeds are not perceived as a “fatty” food.Coconuts and coconut oil are the most abundant sources of saturated fat on the planet.
  6. Full-fat yogurt is incredibly healthy.



Some foods contain more of carbohydrates whereas others may provide more of fats. Most of the foods include all the major nutrients like carbohydrates, fats, proteins but in the varying amounts. So, by eating a variety of different foods, we can ensure that our body gets all the essential nutrients in adequate quantity. The number of significant nutrients like carbohydrates, fats and proteins in some the standard food item is given below;

















































Function of Foods

The segments of food are sure natural substances and minerals found in food. They are called supplements. Supplements give the body vitality and empower it to develop, repair and look after itself. Subsequently, it is fundamental that was we comprehend the correct part of supplements in our food and perceive the different foods that give these supplements.

There are just about 40 basic supplements of which sugars, proteins, fats, vitamins, minerals, roughage, and water are the most vital.

Foods can be grouped by the supplements contained in them and their capacities in the body. In view of their administrations, they can be arranged into three gatherings,

Energy is giving foods:– Energy is required by the body to do work and to play out all the physiological elements of the body. Starches like rice wheat, potato and fats like ghee and oil have a place with this gathering.
Bodybuilding foods:– Our body needs to develop. Because of steady wear and tear fit as a fiddle, new cells must be worked to repair the harmed parts. Protein resembles drain, eggs, meat, cheddar and dal help in lifting weights.
Protective foods:– Vitamins and minerals have a place in this gathering. The nonappearance of these constituents causes inadequacy ailments like rickets, beriberi and so on. Vegetables and organic product are rich in vitamins and minerals.



A vitamin is one of a gathering of natural substances that is available in minute sums of common foodstuffs. Vitamins are basic for physical digestion. On the off chance that we don’t take enough of any vitamin, certain restorative conditions can come about.

A portion of the vitamins are solvent in water while others are dissoluble just in fats or oils, in this way, by their disability, every one of the vitamins can be isolated into two classes or two gatherings; water dissoluble vitamins and fat dissoluble vitamins.

Fat-solvent vitamins

Fat-solvent vitamins are kept in the greasy tissues of the body and the liver. Vitamins A, D, E, and K are fat-solvent. These are less demanding to store than water-solvent vitamins, and they can remain in the body as stores for quite a long time, and now and then months.
Fat-solvent vitamins are assimilated through the intestinal tract with the assistance of fats, or lipids.


Water-dissoluble vitamins

Water-dissoluble vitamins don’t remain in the body for long. The body can’t store them, and they are by and by discharged in pee. Along these lines, water-solvent vitamins should be supplanted more regularly than fat-dissolved ones.

Vitamin C and all the B vitamins are water-solvent.



Vitamin A
• It is fat solvent.
• Deficiency may cause night-visual deficiency and keratomalacia, an eye issue that outcomes in a dry cornea.
• Good sources incorporate Liver, cod liver oil, carrots, broccoli, sweet potato, margarine, kale, spinach, pumpkin, collard greens, a few kinds of cheese, egg, apricot, melon, and drain.

Vitamin B
• It is water solvent.
• Deficiency may cause beriberi and Wicker-Korsakoff disorder.
• Good sources incorporate yeast, pork, oat grains, sunflower seeds, dark-colored rice, entire grain rye, asparagus, kale, cauliflower, potatoes, oranges, liver, and eggs.
Vitamin B2,B3,B4,B5,B6,B7,B8, B9, B10, B11 upto B12.

Vitamin C
• It is water solvent.
• Deficiency may cause megaloblastic weakness.
• Good sources incorporate foods grown from the ground. The Kakadu plum and the Camu natural product have the most elevated vitamin C substance of all foods. The liver additionally has abnormal states. Cooking demolishes vitamin C.

Vitamin D
• It is fat solvent.
• Deficiency may cause rickets and osteomalacia, or softening of the bones.
• Good sources: Exposure to bright B (UVB) through daylight or different sources makes vitamin D be delivered on the skin. Additionally found in greasy fish, eggs, meat liver, and mushrooms.

Vitamin E
• It is fat solvent.
• Deficiency is remarkable, however, it might cause a thrombolytic iron deficiency in babies. There is where platelets are pulverized and expelled from the blood too soon.
• Good sources incorporate Kiwi natural product, almonds, avocado, eggs, drain, nuts, verdant green vegetables, unheated vegetable oils, wheat germ, and entire grains.

Vitamin K
• It is fat dissolvable.
• Deficiency may cause draining metathesis, an uncommon powerlessness to dying.
• Good sources incorporate verdant green vegetables, avocado, kiwi natural product. Parsley contains a ton of vitamin K.


The accompanying suggestions are especially basic: Expand explore into conventional supplements, other bio dynamic food segments, and the convergence of genomics and atomic sustenance.

The Expert Report recognizes a few territories where changes are expected to energize the advancement of practical foods further.



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Components of Food What is Food? Food is a material comprising basically of protein, sugar, and fat utilized as a part of the body of a living being to manage development, repair, and fundamental procedures and to outfit vitality. It is an inorganic substance consumed by plants in vaporous shape or water arrangement Food is […]

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