COMPOSITION FOR ACCELERATING CALCIUM ABSORPTION

摘要

A composition for accelerating calcium absorption which contains a less absorbable L-form aldonic acid, a salt thereof, or a less absorbable L-form aldonolactone; and a food or beverage which contains L-arabonic acid, a salt thereof, or L-arabonolactone. Also provided is a process for producing L-arabono-?-lactone crystals, characterized by dissolving L-arabonic acid in an organic solvent and crystallizing the lactone from the solution. Thus, a food or medicine effective in the prevention or treatment of osteoporosis can be provided.