Avena sativa Raw Material & Plant Part
The botanical name is Avena sativa L., family Poaceae, the common oat. The raw material for oat grass powder is the dried green leaf and young stem of the plant, harvested at the stage before seed heads form, dried and milled. The grain, the bran and the straw of the mature plant are not part of this material.
The part and the harvest stage define the product. Oat grass is a young, leafy plant that resembles cereal grass in the field, whereas oat straw is the dry stalk after the grain is harvested, and oat grain is the seed with its starch and bran. Each is a separate ingredient with different color, taste and composition, and buyers who read only the word oat can end up with the wrong one.
Wild oat, Avena fatua, is a related weed and is not the species used. Oat grass is known as a green leaf material with chlorophyll, fiber and plant sterols, and some saponins typical of oats are described in the literature.
Cut at the leafy stage, oat grass is tender and rich in chlorophyll, and it is dried quickly to hold its color. Later cutting gives a coarser, paler, more fibrous material, so the harvest stage is the main variable that distinguishes one lot of oat grass powder from another.












