The content of protein in meat
Different foods contain different amounts of proteins. The complete proteins present in beef, the number is 25%. In their composition contains all necessary for the body irreplaceable and replaceable amino acids. The body more easily assimilates the veal, it is also high in protein (20%). Pig meat compared to beef, contains less connective tissue, so it is sweeter than beef, and milder. Protein in pork - from 14% to 19%. Mutton is more tough than beef, it has less iron salts, potassium, phosphorus. The amount of protein in lamb to 20%. A great diet product is rabbit meat. It is fairly high in protein (21%), b vitamins and iron.
Offal is not less useful than meat. Because in their composition there are a large number of minerals, iron, vitamins, they are recommended to people with anemia.
The content of protein in chicken and fish
Unlike beef, chicken provides a complete and easily digestible proteins with the most acceptable for the organism amino acid composition. In chicken meat there is required a combination of minerals and vitamins. Fish proteins contain all useful for the organism amino acids. Unlike meat products, in fish proteins has the essential amino acid methionine, are low in connective tissue represented by collagen, easily passing into the soluble form gelatin.
Proteins fish are better absorbed by the body - on 93-98% (meat protein — 87-89%). The amount of protein in the composition of fish depends on the species. On average it is 16%. Fish oil contains large amount of polyunsaturated fatty acids. A very valuable food - fish eggs. It contains 30% protein and 15% fat (15%), fat and water - soluble vitamins, phosphorus, potassium. Smoked and salted fish is less valuable food product. Proteins it much worse are digested and absorbed.
Canned fish do not have a large number of valuable qualities, as the nutrients are destroyed in the cooking process of canned food.
Proteins contained in eggs and dairy products
The most complete protein that is fully absorbed by the body, found in chicken eggs. Egg protein has an optimal ratio of essential amino acids, it consists of substances well absorbed after heat treatment. But raw egg protein is absorbed poorly because of the presence therein of compounds that suppress the action of enzymes needed for digestion.
There are proteins in dairy products. Their number in each product is different: in milk of approximately 5% of protein in cheese is about 22%. In dairy products there is casein, which has long absorbed by the body therefore, nutritionists recommend to consume them in the evening. The people who are watching their weight, eating better to choose low-fat milk and cheese, as in cheese contains large amount of fat. During the day it is important to maintain in the body a high level of protein, so the correct would be to eat often but in small portions.
Advice 2 : What fish is the most protein
The use of fish for human body is obvious - low in calories and good digestion, it is a source of high quality protein with a set of essential amino acids.
Fish – an indispensable source of complete protein, which biological value it is close to the protein of meat products, but it has a higher degree of digestibility. Protein (protein) contains essential amino acids, some of which the body is unable to synthesize, and the only source of these amino acids, the protein in the diet.
Athletes and people sitting on protein diet, need foods with lots of protein at a low calorie product, it is necessary to give preference to tuna. So, in 100 g of this valuable fish contains an average of about 20-25 grams of complete protein, that is 50% of the daily value. Some species of this fish – yellowfin tuna, white tuna "albacore" and deep golubiy tuna contain almost 30 grams of protein. In second place after the tuna's protein content is halibut, anchovies, eel and tilapia – about 26-28 g. a Little behind them, the side 19 d and the mullet is 18.5 g Protein of mullet contains the essential amino acid methionine, which is not even in the protein of meat products.
Slightly behind the sides on the amount of protein mackerel (mackerel) – this fish, which in ancient times was called the "elixir of youth", contains about 18 grams of protein. On the same level is the amount of protein in the pike. Almost on a par with marine fish in protein content and are a noble freshwater sturgeon family: sturgeon, starred sturgeon, starlet and barbel sturgeon, Beluga. The protein content in 100 g of this fish reaches up to 16.5 g, but we must remember that the important source of protein can be not only meat but also eggs and milt. Moreover, the amount of protein in eggs is superior to protein in fish meat, and in Molokai – is equal to this value. Salmon and caviar – not less valuable source of protein. So, rainbow trout, chum salmon, pink salmon, salmon, whitefish, Chinook salmon, whitefish, grayling, taimen, sockeye salmon can contain from 16 to 20 grams of protein. The greatest number of different protein salmon – about 20 Gold a piece of salmon provides the human body with half the daily requirement of protein.
Meat of turbot contains 15.7 g of digestible protein with a well-balanced set of essential amino acids. Almost at the same level contains protein in cod, swordfish and fish of the family Cyprinidae: carp, carp, saber fish, tench, crucian carp, IDE. Hake, Pollock, nototenia, herring, cod, river and sea perch complete list of fish with high protein content.