A balanced diet is an essential requirement for human well-being. For it to be called such, it must integrate all the vital nutrients necessary for the optimal functioning of our bodies. Among these nutrients, amino acids, the units that make up proteins, play a crucial role.
Proteins are essential to the body because they are the main component of cellular structure. For example, muscles, connective tissue, and skin are made up of proteins; this makes them necessary for growth, tissue repair, and numerous biochemical processes. Protein, once taken in through the diet, is broken down precisely into amino acids, but when not supplemented through diet, specific nutraceuticals or supplements can be used. This article will explore the differences between essential and branched-chain (BCAAs) amino acids, delving into their role, where they are found, and how they are taken.
Overview of amino acids
Both animal and plant proteins contain about 20 proteinogenic amino acids; these are divided into three macro-categories: conditionally essential, nonessential, and essential. Conditionally essential amino acids are such because they must be supplemented under special pathophysiological conditions or in cases of infection. On the other hand, non-essential amino acids are metabolized by the body through carbon, oxygen, nitrogen, and hydrogen. However, it should be remembered that the named distinction between these categories does not indicate their importance to the body: all must be taken to stay healthy.
Essential amino acids
Essential amino acids are distinct from the others in that our bodies cannot synthesize them on their own and, therefore, must be taken in through the diet. There are nine essential amino acids: phenylalanine, threonine, tryptophan, methionine, lysine, histidine, leucine, isoleucine, and valine. They perform several crucial functions in addition to protein synthesis, such as the production of enzymes and hormones and the maintenance of the immune system.
The intake of essential amino acids can be recommended for several purposes. For example, phenylalanine is a precursor to important neurotransmitters such as dopamine, which regulates mood and cognition. For this reason, phenylalanine supplements are used to treat disorders such as depression and attention-deficit/hyperactivity disorder, as well as Parkinson’s disease, osteoarthritis, and rheumatoid arthritis. Tryptophan, on the other hand, is necessary for the production of serotonin, which affects sleep, mood, and blood pressure.
Branched-chain amino acids
Three of the nine essential amino acids are called branched-chain based on their branched-chain chemical structure. This category (also referred to as BCAAs) includes leucine, isoleucine, and valine. BCAAs are critical for muscle protein synthesis and energy production during exercise. They make up a significant portion of the amino acids in muscles and are especially important for athletes and those who perform intense physical activities.
Amino acids: where they are found and when to take them
Amino acids are present in a wide range of foods. Animal protein sources, such as meat, fish, eggs, and dairy products, contain all essential amino acids. Some plant sources, such as quinoa and soybeans, are also considered complete proteins and can be a source of amino acids to replace animal foods. Amino acids can also be found in foods such as legumes, nuts, and seeds. However, in the latter case, these are defined as limiting amino acids because they are present in the food in lower concentration than required, so combining these foods within the meal is recommended.
Amino acid intake may vary according to individual needs. Athletes and people with active lifestyles may benefit from supplementing with branched-chain amino acids before, during, or after training to improve protein synthesis and reduce muscle fatigue. On the other hand, essential amino acids should be taken regularly through a balanced diet and supplemented with specific products in case of particular deficiencies.
Amino acids in nutraceuticals and Flarer’s commitment
At Flarer, we are dedicated to supplying high-quality ingredients for the nutraceutical and pharmaceutical industries. We manage the supply of a variety of products, including proteins and amino acids formulated to optimize health and well-being. With over 30 years of experience and our partnerships with certified suppliers, we ensure the supply of products that meet the highest quality and safety standards.
We offer customized solutions to support our customers’ specific needs, helping them overcome supply chain challenges and comply with international regulations. For more information about our products and services, feel free to contact us.