The Food Grade Rice Protein Powder ecosystem links upstream, midstream, and downstream actors that turn raw rice grain into a functional food ingredient. Upstream, agricultural producers and grain processors deliver de‑hulled rice and refined starch. Midstream, specialty extraction facilities, process‑technology licensors, and contract manufacturers apply wet‑fractionation or enzymatic methods to produce a standardized powder that meets food‑grade specifications. Downstream, distributors, ingredient brokers, and OEM formulators incorporate the powder into protein bars, dairy alternatives, and sports nutrition products. Value is captured through protein quality, functional performance, and regulatory compliance, while margins depend on raw‑material costs, yields, and channel mark‑ups.