abstract |
[57] An object of the present invention is to provide a method for maintaining the freshness of royal jelly. According to the present invention, royal jelly to be blended in health foods, etc. is derived from natural substances, so that the degree of effectiveness for each lot and its own deterioration become problems, and the supply of royal jelly with stable quality has been desired. And hibiscus extract in the royal jelly composition, Protease activity in royal jelly can be suppressed, a protein having a molecular weight of 57 kilodalton which is a physiologically active substance can be stabilized, the freshness of royal jelly can be maintained, and the quality can be stabilized. |