Proteins: Is bad to take the proteins needed only from meat! PART 2
By the heat effect, the amino acids, that naturally are L-mino acids turns into D-amino acids. While L-amino acids are reabsorbed in ratio of 90%, the D-amino acids are excreted, through the intestinal track mostly; but the D-amino acids inhibit the reabsorbtion and use of L-amino acids.
The heat action on animal proteins results in a markedly diminished of their biological use and the forming of large amounts of harmful substances. Instead, the vegetable proteins are consumed without being exposed to high temperatures and are much less harmed by the action of heat.
Decades ago, there was the theory that the real vegetarians, in order to get a balanced intake of amino acids you need to eat, at the same mel or in the same day, more vegetable proteins, such as beans and cereals. They even composed lists prepared with care, in which were listed the foods the must be consumed in order to get the same “quality” proteins with the one obtained by the meat consumers. In 1988 and 1993, the American Dietetic Association published a position making, where is argued that there is no need for combining different vegetable proteins, as amino acids obtained from food can complement those that are in the body. In addition, the same association claimed that “soy proteins have the same biological values as those of animal origin and may be the only source of proteins, if is wanted that way”.
Protein content of milk is the best indicator of the proteins requirement for a newborn, whether it’s a human or an animal. Let’s examine the amount of milk proteins from different species of mammals.
Breast milk contains 1.2 g of proteins per 100 ml, and the necessary amount of time needed to double the weight at birth is 120 days. Horse milk contains 2.4 g of proteins per 100 ml, the weight duplication time needed is 60 days. Cow milk has 3.3-3.5 g proteins per 100 ml, doubling the weight in 47 days. Goat milk contains 4.1 g of proteins, the weight doubling in 19 days. Dog milk contains 7.1 g of proteins, the weight doubling in 8 days. Cat milk has 9.5 g of proteins, the weight doubling in 7 days. Rat milk contains 11.8 g proteins per 100 ml, the weight doubling in 4.5 days. This comparison shows that people need a smaller amount of proteins than animals. The growth relative rate is higher in those who consume milk with a higher proteins concentration. Obviously, these animals require a larger amount of proteins for building their body.
If from the birth a child would consume rat milk, it would double the weight in several days instead of months? The respons is a categorical NO, because the rate of growth is genetically determined mostly. The proteins excess would bot be used, but would harm the developing of the child.