Process for producing composition containing insolubilized enzyme and/or insolubilized bacterial cells

Claim 1

A process for producing a composition containing insolubilized enzyme and/or insolubilized bacterial cells which comprises (i) the step of mixing (a) an aqueous solution of enzyme and/or an aqueous dispersion of bacterial cells, (b) at least one porous adsorbent and (c) at least one vitrifiable monomer selected from the group consisting of a compound having the formula: ##STR10## wherein X is H or methyl, R 1 is --CH 2 -- n wherein n is an integer of 1 to 6, ##STR11## CH 2 --CH 2 --O-- m wherein m is an integer of 2 or more, or ##STR12## wherein l is an integer of 2 or more, and when R 1 is --CH 2 -- n or ##STR13## R 2 is --OH, --OCH 3 or ##STR14## wherein X is as defined above, when R 1 is --CH 2 --CH 2 --O m or ##STR15## R 2 is hydrogen, methyl, or ##STR16## wherein X is as defined above; or a compound having the formula: ##STR17## wherein X is as defined above; a compound having the formula ##STR18## wherein R is ethyl, n-propyl or isopropyl and X is as defined above; and mixtures thereof, and (ii) the step of irradiating the mixtures by means of an ionizing radiation at a temperature of less than -10° C.