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All About Amino Acids
Knowledge Base

All About Amino Acids

Caya Kerkhof
 

Amino acids: the building blocks of our body. They are indispensable in a healthy diet and form the building blocks of proteins. You can find them in various types of food, and they play an important role in different processes in our body. Read on to discover everything you need to know about amino acids.

What are amino acids?

Amino acids are organic compounds that are central to the construction and maintenance of our body. They form the building blocks of proteins, which are crucial for various bodily functions. Proteins, composed of amino acids, are involved in almost every biological process, including muscle building, immune functions, and the production of hormones and enzymes.

Want to know more? Read here all about proteins

Structure of proteins and amino acids

A protein is made up of different amino acids and can be seen as a kind of bead chain where the beads consist of amino acids, sometimes numbering in the hundreds. When you ingest proteins through food, they are broken down into smaller proteins during digestion in the intestine and absorbed into the bloodstream. These smaller proteins are called peptides. These are molecules consisting of a smaller number of amino acids. Your body, in turn, uses these peptides (composed of amino acids) to build body tissues that mainly consist of protein, such as bones and muscle connective tissue.

The human body uses 22 different amino acids to make proteins. Although all 22 are important, our body cannot produce all amino acids itself. Therefore, we must obtain these through our diet.

What types of amino acids are there?

There are a total of 22 different amino acids that have a function in the body. These are divided into three categories: essential, non-essential, and semi-essential amino acids. This classification does not mean that one group is more important than another. Your body needs all amino acids to function properly. The categories indicate which amino acids the body can produce itself (non-essential amino acids) and which it cannot (essential amino acids). These amino acids are like puzzle pieces that uniquely come together to make specific proteins.

  • Essential amino acids: These cannot be produced by the body and must be obtained through diet. 
  • Non-essential amino acids: These are produced by the body itself. 
  • Semi-essential amino acids: In most cases, the body produces these itself, but in certain circumstances, such as stress or illness, the body may not produce enough of these amino acids. 
 Essential amino acids  Semi-essential amino acids  Non-essential amino acids
 Phenylalanine   Arginine  Alanine
 Histidine  Asparagine  Aspartic acid
 Isoleucine  Glutamine  Cysteine
 Leucine  Glycine  Cystine
 Lysine  Serine  Glutamic acid
 Methionine  Proline  Tyrosine
 Threonine    Hydroxyproline
 Tryptophan    
 Valine    

 

Amino acids in food

Amino acids are found in various animal and plant-based foods. Animal sources have the advantage of containing all nine essential amino acids. These are known as complete proteins. Plant proteins often do not contain all essential amino acids and are therefore considered incomplete proteins. It is important for vegans and vegetarians to vary protein-rich products to ensure they obtain all essential amino acids.

Animal sources of amino acids: 

  • Eggs
  • Dairy
  • Meat
  • Poultry
  • Fish

Plant-based sources of amino acids: 

  • Beans 
  • Nuts and seeds
  • Soy
  • Rice
  • Quinoa
  • Legumes
  • Grains

What are amino acids good for?

Amino acids play an important role in supporting various bodily functions. They help build and repair cells and tissues, promote muscle growth, regulate hormones, and enhance the functioning of the immune system.

Amino acids are important for various processes in the body:

  1. Maintaining strong bones
  2. Forming new muscle tissue
  3. Supporting wound healing and recovery
  4. Transporting and storing nutrients 
  5. Supporting digestion 
  6. Building and maintaining muscles

Protein stimulates muscle growth, with amino acids responsible for forming new muscle tissue.

Can I take amino acid supplements during pregnancy?

During pregnancy and breastfeeding, there is an increased need for proteins. However, there is insufficient research available on the use of amino acid supplements during this period. Always consult your healthcare provider before using supplements during pregnancy or breastfeeding. 

In conclusion

Amino acids are essential for our health. They are the building blocks of proteins and form the basis of cells, tissues, and muscles in our body. Remember that a varied diet with protein-rich foods is the best way to obtain all essential amino acids.

Do you have more questions or are you looking for personal advice? Contact our health coaches via online chat, or visit a Vitaminstore shop near you

Sources

  1. Nutrition Centre 
  2. Inspection Council, KOAG/KAG
  3. European Food Safety Authority (EFSA)
  4. Nature and Health Products Netherlands (NPN)
  5. Information Centre for Dietary Supplements & Health (IVG)