| 摘要 |
PROBLEM TO BE SOLVED: To obtain an antistress composition, comprising astaxanthin and/or its ester as an active ingredient and useful for a food and drink, etc., capable of preventing or improving immunological and hepatic dysfunctions, fatigue symptoms, etc., caused by stress. SOLUTION: This antistress composition comprises astaxanthin and/or its ester as an active ingredient. A chemically synthesized substance, a red yeast containing the astaxanthin and/or its ester, a shell of crustaceans such as those of the genus Tigriopus (red water flea) or a krill, an extract from green algae, etc., can be used as the astaxanthin. For example, the extract is obtained by a method for extraction from the shell of the crustaceans with an alkyl carboxylate, production by culturing the green algae in a culture medium containing an Na salt, a K salt and an Rb salt, etc. The composition is blended in a food and drink without substantially containing the astaxanthin and/or its ester for use. |
