Home » Tag Archives: proteins

Tag Archives: proteins

Vegetable protein – The facts

proteins

Every living cell and thus every organism (including humans, animals, and plants) are made up of protein molecules. Every plant contains some protein, but its quantity and quality varies. In general, the majority of plant-based proteins do not contain all the essential amino acids and they are difficult to digest compared to animal proteins, such as whey and egg white.

Read More »

Whey protein basics

protein

Whey is a by-product of cheese production. During curdling, casein is separated from the water-soluble component of milk which is the whey. After the processing of whey, it is launched onto market in the form of powder which has high biological value and is easily digestible. The biggest advantage of whey products is that they provide the body with good quality protein, and in addition to this, they do not contain such components as fat or carbohydrate in large quantity.

Read More »

Amino acid basics

Amino-Acids-powder

Amino acids are biologically important organic compounds composed of amine (-NH2) and carboxylic acid (-COOH) functional groups, along with a side-chain specific to each amino acid. In the form of proteins, amino acids comprise the second-largest component (water is the largest) of human muscles, cells and other tissues. Outside proteins, amino acids perform critical roles in processes such as neurotransmitter transport and biosynthesis. They include the 23 proteinogenic (“protein-building”) amino acids, which combine into peptide chains (“polypeptides”) to form the building-blocks of a vast array of proteins. Twenty of the proteinogenic amino acids are encoded directly by triplet codons in the genetic code and are known as “standard” amino acids. Many important proteinogenic and non-proteinogenic amino acids also play critical non-protein roles within the body. For example, in the human brain, glutamate (standard glutamic acid) and gamma-amino-butyric acid (“GABA”, non-standard gamma-amino acid) are, respectively, the main excitatory and inhibitory neurotransmitters; hydroxyproline (a major component of the connective tissue collagen) is synthesised from proline; the standard amino acid glycine is used to synthesise porphyrins used in red blood cells; and the non-standard carnitine is used in lipid transport. Nine proteinogenic amino acids are called “essential” for humans because they cannot be ...

Read More »

Protein facts

protein powder

Proteins are large biological molecules, or macromolecules, consisting of one or more long chains of amino acid residues. Proteins perform a vast array of functions within living organisms, including catalyzing metabolic reactions, replicating DNA, responding to stimuli, and transporting molecules from one location to another. Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the nucleotide sequence of their genes, and which usually results in folding of the protein into a specific three-dimensional structure that determines its activity. Proteins are also necessary in animals’ diets, since animals cannot synthesize all the amino acids they need and must obtain essential amino acids from food. Through the process of digestion, animals break down ingested protein into free amino acids that are then used in metabolism. Most proteins consist of linear polymers built from series of up to 20 different L-α-amino acids. Most microorganisms and plants can biosynthesize all 20 standard amino acids, while animals (including humans) must obtain some of the amino acids from the diet. The amino acids that an organism cannot synthesize on its own are referred to as essential amino acids. Key enzymes that synthesize certain amino acids are not present in ...

Read More »