Sensitive substance-in-wax solutions are disclosed that may be used to protect fish oil and other sensitive edible substances. Sensitive substance wax-in-water emulsions also are disclosed that are stable in food products, e.g., aqueous systems such as acidic beverages, and that may be used to protect sensitive edible substances. The Sensitive substance wax-in-water emulsions can be produced by combining the sensitive substance-in-wax solutions with anionic polymer. Food products comprising the sensitive substance-in-wax solutions and/or the sensitive substance wax-in-water emulsions and methods for producing the sensitive substance-in-wax solutions and the sensitive substance wax-in-water emulsions are also disclosed.