Hydroxypropyl distarch phosphate (HDP) is a modified resistant starch. It is currently used as a food additive (INS number 1442). It is approved for use in the European Union (listed as E1442), the United States, Australia, Taiwan, and New Zealand.
See also Modified starch Silicon dioxide
References
External links E1442: Hydroxypropyl di-starch phosphate, food-info.net