The organic/inorganic situation you seem to be referring to is actually more of a misnomer in scientific terms. All foods are organic to some extent, the only exemption being water. Organic in science means HydroCarbon Based, while Organic in your grocery store refers to how the food was treated (in other words no fertilizers or pesticides on plants).
Any food that contains: sugars, proteins, or lipids (fats and waxes) are HydroCarbon based and therefore scientifically speaking organic (this includes all plants and animal based foods). While organically grown lettuce (I am just using this as an example) that you would find in your produce section is lettuce that was not sprayed with an insecticide to keep catepillars away.
Hope this clears up the situation so you can find the appropriate information.
Addendum- as the person above myself mentioned Electrolytes, minerals, metals, and ions are inorganic substances that your body needs... iodized table salt is one of the few completely inorganic compounds a person intakes however there is no energy gain from these sources.
Years of teaching University Level chemistry