Fatty emulsions containing reducing sugar and method for sterilizing the same

A fatty emulsion containing a reducing sugar, being an oil-in-water emulsion prepared by emulsifying a fat or oil with an emulsifying agent wherein the aqueous phase contains both a reducing sugar and a buffer consisting of an organic acid exhibiting an acid dissociation constant of 5.0 to 7.5 in water, a salt thereof and the pH is adjusted to 5.0 to 7.5; a fatty emulsion containing a reducing sugar, and a liquid medicine of fat or oil and that is sterilized after carbon dioxide is dissolved therein and then is held in a plastic injection container; the plastic injection container is packaged with a carbon dioxide absorbent in an oxygen-impermeable secondary container; and a process for the production of a method for sterilizing the same. This fatty emulsions which is stable, of high quality, and containing reducing sugar can suppress the formation of free fatty acids and in decomposition of the sugar that both lead to color variation, thus being high-quality stable ones little causing discoloration.