Want this question answered?
A quality protein, for instance, contains all the essential amino acids in the proportions you need them. Milk protein, casein, is the highest quality protein. Egg protein, albumen, is next best. (Albumen is not albumin, a class of proteins found in your blood and other body tissues.) Your body can turn almost anything into its primary fuel, glucose, but it cannot turn fuel into the other nutrients it needs. Food quality is therefore determined by the essential nutrients present in that particular food.
Protein quality, from a nutrition perspective, is a term used to describe how well a protein from food matches the body's requirements and, therefore, how useful the protein is for our body. This is determined by looking at the building blocks which make up the protein; called Amino Acids.There are 20 primary amino acids, 9 of which our body cannot make on its own. These are considered "essential" and so must come from our diet. A protein's quality is determined by asking the following questions:# Are all the 9 essential amino acids present in the protein?# Are the ratios of essential amino acids in the protein ideal?The first question is answered fairly easily with a "yes". In fact, pretty much every source of protein has at least someof all the essential amino acids. However, if the protein is deficient in 1 or more essential amino acid then it is considered incomplete. For your reference, grains are typically low in the amino acid lysine, while legumes are low in methionine. Animal products, on the other hand, are high in all the essential amino acids and are usually considered complete. (the exception being gelatin)Answering the second question is a bit more complex. Basically, the body needs a certain proportion of essential amino acids in the protein in order for it to be used most effectively. If all 9 are present yet 1 or more are not very abundant then the protein is of lower quality because the body will not be able to use the protein to its fullest potential.The "gold standard" used when determining protein quality is the egg (typically chicken egg). Eggs have all 9 essential amino acids in its protein and the ratios of these amino acids are very similar to the ideal protein needed by the body. You simply can't find better protein in your diet than egg protein! As a result, egg protein is considered the #1 quality protein and all other proteins from all other food sources are compared against this standard.http://www.faqs.org/nutrition/Pre-Sma/Protein.htmlhttp://en.wikipedia.org/wiki/Essential_amino_acids
soy as wells as nuts, are a better source of protein than meat. being a better quality protein hormones in the body will be better balanced.
"Quality" can either mean:a. Fitness for a particular purpose. There is no general correspondence between this and a particular physical property. In specific cases, there may be a certain correspondence with a certain property, such as "hardness" for certain tools - but the criteria for "quality" have to be evaluated separately in every case.b. A marketing term which may include things like "status". This has even less physical meaning.
Cheese contains a high concentration of essential nutrients: calcium, phosphorus, zinc, vitamin A, riboflavin, vitamin B12 and high-quality protein
Edward John Golding has written: 'Rational methods for predicting quality and digestible energy concentration of warm-season forages for ruminants' -- subject(s): Feeding and feeds, Ruminants, Grasses
If one raises their own animals for meat, one is more apt to eat more of that meat, thereby ingesting more protein.
A quality protein, for instance, contains all the essential amino acids in the proportions you need them. Milk protein, casein, is the highest quality protein. Egg protein, albumen, is next best. (Albumen is not albumin, a class of proteins found in your blood and other body tissues.) Your body can turn almost anything into its primary fuel, glucose, but it cannot turn fuel into the other nutrients it needs. Food quality is therefore determined by the essential nutrients present in that particular food.
Cat foods with low protein content will often cause excess flatulence. Feeding a cat a food with more protein will solve this. Simply look at the ingredients list of the food, and if a protein source is not the first ingredient, then the food is low quality.
There are many advantages of ruminant digestion of non-ruminant digestion. One advantage is the more complete and efficient breakdown of food. Another advantage is that some ruminant-specific microorganisms synthesize important vitamins. Ruminants can always better utilize low quality feed.
Eggs
In such conditions, the enzymes for the digestion ,protein absorption and transport system are less active, feeding these children wiht high quantity of protein or good quality of protein would be harmful. So it should be carefully noted for treating such patients. Their diet should be gradually increased with the protein to aloww their body sufficient time to develop metabolic pathways. These children can be provided with prediested protein for a proper benefit.
A measure of the essential amino acid content of a protein relative to the essential amino acid needs of the body determines the quality of a protein.
PDCAAS
two factors influence protein quality- the proteins digestibility and its amino acid composition.
The protein RDA assumes that dietary protein is from a mix of low- and high-quality sources.
You can get quality protein from many sources but the most common good source of protein is chicken, or, any type of lean meat. Fish is also another good protein source. Protein supplements and bars are also another good choice.