Dynamics of the accumulation of the alkaloids ofNitraria sibirica

Abstract

We have studied the total alkaloids present in various organs of Nitr~ga sibirica Pall. as functions of the vegetation period. Attempts were first made to determine the optimum method of extraction, as previously for N. komarovii [i]: the same amounts of samples of the comminuted plant were extracted in parallel by three methods: i) with a 2% solution of acetic acid in chloroform; 2) with methanol; and 3) with chloroform after the plant had been wetted with an 8% solution of ammonia.The purest combined material and the best yield of it were obtained by the use of the third method, which is that generally adopted for the isolation of mixtures of bases, and we subsequently used only this method.The amounts of alkaloids in the buds, flowers, leaves, stems, seeds, fruit, and roots of plants collected in the environs of the village of Rybach'e (KirgSSR) were as follows:

Pharmacology and phytochemistry of the Nitraria genus (Review)

“…identified in plants of the Nitraria genus were initially isolated in these studies. These studies also observed that the content of alkaloids in the leaves is higher than the content in the roots, stems and seeds of Nitraria komarovii and Nitraria sibirica (37)(38). There are also various types of alkaloids that have been isolated and purified in other studies.…”

Biosynthesis and biomimetic synthesis of alkaloids isolated from plants of the Nitraria and Myrioneuron genera: an unusual lysine-based metabolism

“…An interesting study was published in 1977 relating the Polybuffer Ò separation of alkaloids with an adaptation of the historical Craig apparatus. 4 Several publications have also studied the total amount of alkaloids in different plant organs of three Nitraria species (N. komarovii, 5 N. sibirica, 6 and N. schoberi 7 ), and according to the location. The most common species (N. schoberi) is the richest in alkaloids, both in the quantitative and (as we will show) qualitative respects; usually, the leaves contain the highest quantities of alkaloids.…”