Beef or pork collagen – called in total „animal“ collagen. Ist isolation requires an offensive chemical and enzymatic process leading to broad degradation of proteins. This collagen contains also prions – infectious proteins able to lead to fatal paralysis of the nervous system – BSE or Kreutzfeld-Jakobs disease. Fish and less developed organisms do not produce any prions.
Plant collagen (fytocollagen) – fytocollagen (commercial name) comes from plants and it contains polycarbohydrates of plant origin that form a protective film on the skin and have a similar effect as animal collagen. Its effect is not as complex as that of animal collagen.
Lyophilised collagen – lyophilisation is drying of materials in frozen condition at a lower air pressure. This process does not damage the structure and the efficient component keeps its effect and content of valuable elements as vitamins, proteins, enzymes and minerals. Lyophilised products contain only traces of water and it is not necessary to add preservatives. The so processed collagen is used mostly in food supplements, particularly in those used for skin and cartilage regeneration. Costs of lyophilisation result in a higher product price.