| 摘要 |
PURPOSE:To readily obtain an inexpensive and safe drink containing a silicate, by treating a plant of the family Equisetaceae of the class Pteridophyte with a weakly alkaline potassium salt. CONSTITUTION:A nutrient stem of a plant of the family Equisetaceae of the class Pteridophyte is collected at 3-5 months growth period, directly dried in the shade and preserved. The resultant nurient stem is cut to about 2-10mm length, sufficiently washed with cold water and then dipped in an aqueous solution containing dissolved 1%, based on the weight of the dried material, potassium carbonate. The dipping time is normally 12-24hr. The dipped solution is then boiled to give the aimed brown extract solution for 3-5hr. The resultant extract solution has an amount of extracted silicates 3-5 times as much as that obtained without treating with the potassium carbonate solution under the same condition and the stable extract solution is obtained. |
