Description
Frozen parsnip powder is a low‑moisture, free‑flowing powder produced by blanching, rapid freezing, lyophilization, and cryogenic grinding to preserve color, flavor, and nutrients.
Technical
Blanching at 85 °C for 90 s inactivates polyphenol oxidase, preventing enzymatic browning while retaining sweetness. Rapid freezing at –30 °C forms fine ice crystals that preserve cell structure, and lyophilization at –40 °C under <0.1 mbar removes water by sublimation, inhibiting microbial growth. Cryogenic grinding at –196 °C avoids heat‑induced starch gelatinization and Maillard reactions, yielding a fine, free‑flowing powder.
Science
Primary Reaction
Inactivation of polyphenol oxidase (PPO) and sublimation of water
Sensory Profile
Aroma ()
earthysweetnuttycaramelizedrootyhoney-likespicywoodyherbaltoasted