Abstract: A method for obtaining bimodal mesoporous materials based on silicon oxides by using microwave radiation. A method for obtaining bimodal mesoporous materials, based on silicon oxides, from atranic precursors, characterized in that it comprises: —a first step of forming a mesostructured material containing organic matter, —and a second step of eliminating the organic matter contained in the mesostructured material, by calcination, obtaining a bimodal mesoporous material based on silicon oxide, such that at least one of the two steps is carried out by irradiation of the corresponding starting material, with microwave radiation from solid state sources.

Abstract: Food freshness indicator ink and method for the manufacture of a food freshness indicator ink. It comprises a varnish that constitutes between 90-98% of the total, the varnish comprising between 5-25% of the total amount of the varnish of at least one film-forming resin or at least one vinylic resin or a mixture thereof, between 10-25% of the amount of the resin of a plasticizer additive and between 50-75% of the total amount of the varnish of solvents, and between 2-10% of the total of metallic salts.

Abstract: Food freshness indicator ink and method for the manufacture of a food freshness indicator ink. It comprises a varnish that constitutes between 90-98% of the total, the varnish comprising between 5-25% of the total amount of the varnish of at least one film-forming resin or at least one vinylic resin or a mixture thereof, between 10-25% of the amount of the resin of a plasticiser additive and between 50-75% of the total amount of the varnish of solvents, and between 2-10% of the total of metallic salts.