Fecha de publicación: -- Fuente: WIPO "tomato" The present invention relates to a method of preparation of modified molecular sieves for ethylene removal The method (100) of preparation of a modified molecular sieve for ethylene removal includes a first phase (101) and a second phase (201). The first phase (101) includes preparation of MIL-100 (Fe). The second phase (201) includes preparation of a modified molecular sieve through a series of steps, such as activation, impregnation, and drying to get the modified molecular sieve's structure to specifically target and remove ethylene gas. The modified molecular sieves prepared by the method of present invention adsorb ethylene molecules throughout the shelf life of climacteric or non-climacteric food products that are sensitive to ethylene and facilitate quick adsorption without causing undesirable side effects.