Ommochrome

They are responsible for a wide variety of colors, ranging from yellow over red and brown to black.

[1][2] In spiders, ommochromes are usually deposited as pigment granules within the cells of the hypodermis, immediately beneath the cuticle.

[3] Due to the chemical properties exhibited in the chromophoric groups of ommochromes, these substances have been proven to be satisfactory in functioning as free radicals.

[4] In testing the anti-radical capacity of ommochromes, their electron transfer and hydrogen transfer mechanisms were examined, and it was shown that ommochromes posses the ability to prevent oxidative stress by scavenging free radicals.

Results regarding this study were quantified using a full-electron donor acceptor map (FEDAM) which allowed for optimal discretion in evaluating anti-radical capacity.