Krill chitin modified with carbon disulfide was used as a support of enzymes. The dithiocarbamino groups created after reaction of CS(2) with chitinous NH(2) can participate in binding the enzymes without denaturation and loss in activity. The stability of these bonds depends on pH and decreases gradually at ionic strengths higher than 0.01. Chitin modified with CS(2) can be used as a support for enzymes having high activity at mild conditions of pH and ionic strength.