WeRead Powered by ReaderPub
The Chemical Constituents of Piper Methysticum / Or, The Chemical Constituents of the Active Principle of the Ava Root cover

The Chemical Constituents of Piper Methysticum / Or, The Chemical Constituents of the Active Principle of the Ava Root

Chapter 7: THE VARIOUS METALLIC SALTS OF THE RESINOUS ACIDS.
By Alice A. Ball
Open in WeRead

Explore more books like this:

Drugs/Alcohol/PharmacologyScience - Chemistry/Biochemistry

About This Book

The thesis presents a systematic chemical investigation of the active principles of the ava root (Piper methysticum), beginning with historical uses and continuing through detailed laboratory methods for extraction and resin separation. It identifies distinct resin fractions and characterizes their metallic salts, oxidation products, and associated acidic components, and isolates neutral crystalline methysticin and related methysticinic acid. Analytical sections examine alcohol radicals and oxidative transformations, and a physiological chapter summarizes observed pharmacological effects. The conclusion synthesizes chemical findings and their relation to the root's narcotic and toxic properties.

THE VARIOUS METALLIC SALTS OF THE RESINOUS ACIDS.

After obtaining the potassium salts of the acids and having freed the same from the excess of the potassium hydroxide and potassium carbonate, the possibilities of the formation of different metallic salts were tried.

The soluble salts of the following metals yielded precipitates:—

  • Manganese
  • Barium
  • Cobalt
  • Silver
  • Mercury
  • Iron
  • Zinc
  • Copper
  • Calcium
  • Lead

The following metallic salts gave a complete precipitation:—

  • Silver
  • Iron (ferric)
  • Manganese

Since the barium and iron (ferric) salts gave the best means of separation, they were used to separate the resins.