Caroténoids
Coloured pigments which are mainly synthesized by the vegetals and brought to us exclusively through our food. They have a protective role to play vis-à-vis oxidation reactions which are at the origin of cellular ageing. In man, the main ones to be found are lycopene, lutein, beta-carotene and alpha-carotene.
Cholestérol
It is classified in the lipids, either free, or linked to fatty acids. It is a constituent element of the cell membranes and the precursor of important molecules in the organism (vitamin D3, biliary salts, estrogens…). However, above and beyond a certain level in the plasma, it is known as hypercholesteremia, a disorder that could lead to artherosclerosis.
Conjunctive tissue
A supporting tissue made up of collagen fibres ensuring the resistance and the firmness of organs such as the skin. Its elasticity and its faculty to undergo deformations are enabled by thinner fibres, the elastic fibres, which are made up of another protein, elastin.