The present invention discloses a method for fixing
Nitrile hydratase strain by adopting
sodium alginate and
chitosan microcapsules, which relates to a method for fixing
Nitrile hydratase strain. The present invention resolves the problems that the loss of the enzymatic activity of the
Nitrile hydratase strain fixed by the prior method is large and that the number of reaction batches is little. The method includes the following steps: after
sodium alginate,
Nitrile hydratase suspension, diatomite and
active carbon are uniformly mixed, the mixture is dipped into CaCl2 solution; the produced
pellets are solidified under the temperature of 4 DEG C for 24 hours; and the
pellets are filtered out and then put into
chitosan acetic acid solution to be filmed. The
sodium alginate and the
chitosan microcapsules, which are obtained by the method, have the highest relative enzymatic activity, reaching 91.6 percent, increased by 23.3 percent compared with the relative enzymatic activity of the
sodium alginate and the chitosan microcapsules obtained by the
sodium alginate embedding method. The
Nitrile hydratase strain obtained by the method can realize ten batches of reactions, and compared with the
sodium alginate embedding method, the method has better operation stability and continuity and can realize industrialized
continuous production.