Oat Extract Details  Product Name: Oat Extract Herb Source: Avena Sativa L Active Ingredient: Beta Glucan (Polydextrose), β Glucan Specification: 10:1, 20:1, 20%-70% Beta Gluca Appearance: Yellow-brown Powder Test Method: TLC CAS#: 84012-26-0 What Is Oat Extract? Oat (Avena sativa), sometimes called the common oat, is a species of cereal grain grown for its seed. Oat seeds are a rich source …