| abstract |
Young leaves of a grass plant selected from the group consisting of barley, wheat, rye, oats, adlay, Italian ryegrass, and rice, having gamma-aminobutyric acid, known as an antihypertensive substance, in which the amount of gamma-aminobutyric acid is enriched or retained, are provided. The content of gamma-aminobutyric acid in the young leaves is 500 mg/100 g or more in terms of dry weight. Young leaf powder, young leaf juice, and young leaf juice powder of the grass plant having gamma-aminobutyric acid in large amounts are also provided. |