Here we are going to give you some idea about the essential minerals for the body, their sources, daily requirement for the human body, physiological functions and also the symptoms of deficiency and excess.
Now we shall discuss some of the important microelements.
It is one of the Essential Minerals for the body.
Adults — 1 100-2000 mg.
Children — 350-800 mg.
Table salt, salted fish or meat, pickles, salted nuts, butter, cheese. Vegetables and drinking water also contain some amount.
Maintains —[1] excitability of tissues ; [2] extracellular fluid (ECF) balance; [3]osmosis-regulation; [4] blood pressure ; [5] composition of digestive juices and [6] glucose absorption from intestine.
Deficiency —Dehydration, fall of ECF volume and blood pressure, loss of body weight.
Excess — Rise in ECF volume and blood pressure.
Potassium is one of the Essential Minerals for the body.
Adults — 1400-2000 mg.
Children — 500-1000 mg.
Beef, pork, chicken, unrefined salt, dates, pineapple, orange, banana, molasses.
Maintains — [1] excitability of tissues ; [2] intra-cellular fluid balance ; [3] acid base balance ; [4] action of certain enzymes as cofactors and [5] O2 and CO2 carriage by blood.
Deficiency — Increased heart rate, renal damage, polyuria, muscular weakness and paralysis.
Excess — Slowing of heart, fall of blood pressure, muscular weakness and depression of nervous system.
It is one of the Essential Minerals for the body.
Adults — 1500-5000 mg.
Children — 500-4000 mg.
It is the same as that for Na and K, because Cl remains as NaCl and KCl in these materials.
Maintains —
[1] Osmotic pressure and fluid balance; [2] blood pressure; [3] formation of gastric HCl ; [4] action of certain enzymes as cofactor .
Deficiency:
(generally associated with Na deficiency)
Excessive:
Vomiting may deplete Cl~ with gastric contents leading to alkalosis due to accumulation of more HCCT.
Adults — 500 mg.
Pregnant/Lactating woman —
1000-1200 mg.
Children— 400-700 mg.
The source of this essential materials for the body are Milk, cheese, curd, hard water, lime, dark green leaves.
carrot, cabbage, pulses etc.
[1] Formation of bones and teeth. [2] Growth. [3] Coagulation. [4] Enzyme action. [5] Muscle contraction. [6] Neuromuscular transmission. [7] Membrane permeability.
Deficiency — Rickets and osteomalacia, tetany(neuromuscular hyperexcitability, muscle spasm, pares- thesia), dental decay.
Excess — Hypotonia of muscles, fatigue. anorexia, constipation etc.
Adults— 800 mg.
Pregnant/Lactating woman — 1200 mg.
Children— 500-700 mg.
The source of this essential materials for the body are Same as Ca ; protein rich food e.g., meat, fish, egg etc.
Formation of — [1] bones & teeth ; [2] phospholipids ; [3] nucleoproteins ; [4] coenzymes (e.g. NAD, NADP, FAD etc.) ; [5] phosphate buffers (for acid base balance) ; [6] high energy compounds e.g., ATP (for active processes).
Deficiency — Malformation of bones & teeth ; rickets ; poor growth.
Magnesium is another of the important and essential minerals for the body.
Adults— 350 mg.
Pregnant/Lactating woman — 500 mg.
Children— 150-250 mg.
Vegetables, cereals, meat, nuts, dry peas, beans etc.
[1] Required for bone growth and enzyme actions. [2] Reduces neuro-muscular irritability.
Deficiency — Neuromuscular hyperexcitability (tetany like); cardiac arrythmia.
Excess — Paralysis, insomnia, unconsciousness etc.
Adequate protein intake fulfils the requirement of Sulphur.
The source of this essential materials for the body are Protein rich food e.g., meat, fish, egg, pulses, soyabeane/c., (because all proteins contain S containing amino acids which are the main source of S). Inorganic.
sulphates present in food are not utilised in animal body.
Formation of — [1] body proteins e.g., (a) enzymes. (b) hormones (insulin, ADH etc.), (c) keratin of nail
and hair, (d) chondroitin sulphate of cartilage, bone & tendon, (e) heparin ; [2] sulpholipids of brain ; [3] coenzymes (glutathione. coenzyme A) and [4] sulphates for detoxication.
Deficiency — does not occur unless there is a deficiency of protein in diet.
Iron is the most important and Essential Minerals for the body as microelement.
Adult man — 25 mg. Adult woman — 35 mg. Pregnant woman — 40 mg. Children— 15-20mg.
Liver, meat, egg yolk, fish, flour, green leafy vegetables, date, fig, legumes, nuts, molasses etc.. (Milk is a poor source).
Helps in carriage of O2 and oxidation reactions by forming heme compounds e.g.. hemoglobin, myoglobin and oxidative enzymes (cytochromes etc).
Deficiency — Hypochromic microcytic anemia (low hemoglobin content of blood with smaller red cells).
Excess — Hemochromatosis (an excess iron accumulation in tissues, bronze skin, diabetes mellitus).
It is another of the Essential Minerals for the body as microelement.
Adult — 3 mg. Pregnant woman — 3.5 mg. Children— 1.5-2.5 mg.
Green leafy vegetables, nuts, dry legumes, Ir.xr, fr,h etc.
Takes part in the — [1] action of some enzymes ; [2] utilisation of Fe for hemoglobin synthesis ; [3] formation of hemocyanin (respiratory pigment of prawn etc.).
Deficiency (rare in adults; may occur in infants, because milk lacks Cu) — Anemia and depigmentation of hair and skin.
Iodine is one of the very Essential Minerals for the body as microelement.
Adults — 150 ng. Pregnant woman — 175 ug. Children — 70-120 ng.
Sea fishes, iodized salt.
Synthesis of thyroid hormones is its function.
Deficiency causes Hypothyroidism with goitre (enlarged thyroid).
Adults — 5 mg. Children— 0.5-3 mg.
Whole grain cereals legumes, green leaf) vegetables, tea, livei etc.
Helps in — [1] reproduction ; [2] action of some enzymes ; [3] bone and blood formation.
Deficiency (very rare) — Impaired reproduction & bone growth. Excess (in mine workers) — psychotic symptoms.
Zink also has importance as one of the Essential Minerals for the body as microelement.
Adults — 15mg. Pregnant and lactating woman — 20-25mg. Children— 3-10 mg.
Unmilled cereals, legumes, maize, spinach, lettuce and many vegetables, fish, liver etc.
Helps in — [1] action of some enzymes and hormones ; [2] reproduction ; [3] growth and health of skin.
Deficiency (rare) — defects in growth and reproduction.
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