Abstract: Process for producing encapsulable globules by means of a film polymerized in situ, applicable particularly to the production of breeding substrates for entomophagous insects in the form of artificial lepidoptera eggs, in which process drops are frozen for their encapsulation and comprising the stages of: forming a jet of the substance to the frozen and spraying said jet in the form of drops by disintergration of said jet; collecting said drops on a cellular grid which is held at the surface of a bath of cryogenic liquid having a density less than that of said substance; sifting the frozen globules derived from the drops on at least one sieve immersed in the bath beneath said cellular grid.