A dendritic emulsifier for forming an oil-in-water emulsion includes an anhydride-modified phytoglycogen or glycogen-type material. A method of preparing an oil-in-water emulsion includes: (a) combining oil, water, and a dendritic emulsifier; and (b) mixing a combination of the oil, water, and dendritic emulsifier. A method of preparing a dendritic emulsifier includes reacting an anhydride with a phytoglycogen or glycogen-type material in solution, thereby forming an anhydride-modified phytoglycogen or glycogen-type material.
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