| 摘要 |
PURPOSE:To provide the subject food useful for preventing viral diseases such as influenza and pneumonia by compounding an extract of a yam belonging to Dioscorea japonica Thumb. CONSTITUTION:The objective food such as juice, carbonated beverage, jam or marmalade contains an extract of Dioscorea japonica Thumb, preferably the extract prepared by a solvent extraction, dry distillation or steam distillation means. |
