Abstract: The present invention relates to a composition containing vitamin C. The composition according to the present invention includes cationic material and anionic material as a primary stabilizing agent of the vitamin C; and a caffeic acid derivative as a secondary stabilizing agent of the vitamin C. The caffeic acid derivative is water-soluble and, preferably, a new caffiec acid derivative as denoted by the chemical formula 1 below is used. According to the present invention, the cationic material and the anionic material generate an electrical double layer to stabilize the vitamin C primarily; water-soluble caffeic acid derivative stabilizes the vitamin C secondarily. Accordingly, the vitamin C is stabilized double so that the vitamin C is protected from being oxidized by air, heat and moisture.

Abstract: A caffeic acid derivative can be denoted by the chemical formula 1 below. The present invention provides a caffeic acid derivative denoted by a chemical formula 1 as below and a composition containing the same. The preferable composition according to the present invention containing a caffeic acid derivative denoted as below contains a vitamins C further. And the composition can be the formulation for cosmetic material (cosmetics), medical material (medicine), foods (groceries), etc. The caffeic acid derivative according to the present invention as denoted by a chemical formula 1 is water-soluble and superior in antioxidant power so that it can stabilize the vitamins C effectively. The composition containing the caffeic acid derivative according to the present can increase whitening effect and further can prevent the skin from aging through effective activity of the vitamin C.

Abstract: The present invention relates to a composition containing vitamin C. The composition according to the present invention includes cationic material and anionic material as a primary stabilizing agent of the vitamin C; and a caffeic acid derivative as a secondary stabilizing agent of the vitamin C. The caffeic acid derivative is water-soluble and, preferably, a new caffiec acid derivative as denoted by the chemical formula 1 below is used. According to the present invention, the cationic material and the anionic material generate an electrical double layer to stabilize the vitamin C primarily; water-soluble caffeic acid derivative stabilizes the vitamin C secondarily. Accordingly, the vitamin C is stabilized double so that the vitamin C is protected from being oxidized by air, heat and moisture.

Abstract: A caffeic acid derivative can be denoted by the chemical formula 1 below. The present invention provides a caffeic acid derivative denoted by a chemical formula 1 as below and a composition containing the same. The preferable composition according to the present invention containing a caffeic acid derivative denoted as below contains a vitamins C further. And the composition can be the formulation for cosmetic material (cosmetics), medical material (medicine), foods (groceries), etc. The caffeic acid derivative according to the present invention as denoted by a chemical formula 1 is water-soluble and superior in antioxidant power so that it can stabilize the vitamins C effectively. The composition containing the caffeic acid derivative according to the present can increase whitening effect and further can prevent the skin from aging through effective activity of the vitamin C.