The composition to preserve food is a mixture of colloidal minerals, including colloidal silver, colloidal gold and colloidal titanium. The composition of ultramicroscopic particles is suspended in water, forming a solution. The solution is used for preserving perishable foods, such as fruits and vegetables, by submerging each food item in the liquid for various lengths of time. The solution may also be used for disinfecting tissues and various objects, as well as for other antimicrobial uses.