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Friday, September 24, 2010

Sources of Protein

Friday, September 24, 2010
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There are two kids of food that are considered good sources of proteins : animal protein and vegetable protein. Animal proteins -such as fish, meat, poultry, cheese, milk, and egg- are considered good sources of complete protein. Complete protein means contain of all essential amio acids in ample amounts.

Vegetables proteins are incomplete proteins, because they do not have enough of one or more of the essential amino acids. But we can create a self made complete protein by combining foods from two or more vegetables. We can consume complementary proteins to get complete protein. Complementary proteins are incomplete proteins in a food that, when combined, compensate for one another's short falls. By combining food from grains with legumes or grain with nuts or legumes with nuts, we create a complete protein source.

Sources of Complementary Proteins

Grains:
rice, oats, wheat, cornmeal, barley, bulgur, buckwheat, pasta, rye

Legumes:
chickpeas, dried peas, peanuts, beans, lentils, soy products

Nuts/ Seeds:
sunflower seeds, walnuts, sesame seeds, cashews, pumpkin seeds, etc.

When eaten in combination at the same meal, the body receives all nine essential amino acids. Because the essential amino acids can not be produced by the body, it is very important for us to consume foods that contain essential amino acids. Whatever food that you eat, make sure you get all the nutrients your body needs.

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Thursday, September 23, 2010

Personal Protein Requirements

Thursday, September 23, 2010
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Every body need protein. Because protein is needed for every bodily function. According to the recommended dietary allowance of protein for a variety of age categories, every body need protein in several amounts:

infant :
up to 5 month = 13 grams
5 month - 1 year = 14 grams

children:
1 - 3 years = 16 grams
4 - 6 years = 24 grams
7 - 10 years = 28 grams

males :
11 - 14 years = 45 grams
15 -18 years = 59 grams
19 - 24 years = 58 grams
25 + = 63 grams

females :
11 - 14 years = 46 grams
15 -18 years = 44 grams
19 - 24 years = 46 grams
25 + = 50 grams
pregnant = 60 gram
lactating 1st 6 months = 65 gram
lactating second 6 months= 62 gram

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Tuesday, September 21, 2010

Protein : Essential and Non-Essential Amino Acids

Tuesday, September 21, 2010
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Protein come from the Greek word 'proteios', that mean 'of prime importance'. Protein consist of carbon, hydrogen, oxygen and nitrogen and arranged as strands of amino acids. Amino acids is the building blocks of protein.

Our body continually gets the amino acids its needs froom its own amino acids source and from food we eat. after we eat a food that contains protein, the body will breaking it down into various amino acids. There are 20 different amino acids, depending upon the sequence in which they appear, and a specific function is carried out in the body.

From 20 amino acids, 11 can actually be manufactured within our body. It is mean, 9 amino acids can not be manufactured. Our body cannot function well without each and every amino acids. The 9 amino acids are the essential and we get these nine from outside food resources. so, they called essential amino acids.

Essential amino acids:
Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, tryptophan, and Valine.

Non Essential amino acids:
Glycine, Glutamic acid, Arginine, Aspartic acid, Proline, Alanine, Serine, Tyrosine, Cysteine, Asparagine, and Glutamine

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