A process for the production of an O/W emulsion for hyperalimentation comprising homogenization of a composition comprising hydrophobic substance, emulsifier, water and maltose into minute droplets of O/W emulsion. The emulsion can provide a higher caloric nutritive supplement to patients than conventional emulsions using glycerin. It is stable over a wide temperature range and it can be stored for long periods of time. The emulsion is particularly useful in emergency medical situations where enteral or parenteral hyperalimentation is required for the patient.