PubMed · 14022448
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
R COLORADO IRIS. 1962. [Obtaining diosgenin from the barbasco].. https://pubmed.ncbi.nlm.nih.gov/14022448/
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
Solanidine is the steroidal aglycon of some potato glycoalkaloids and a very important precursor for the synthesis of hormones and some pharmacologically active compounds. In this work, we make use of a new chemistry model within Density Functional Theory, called CHIH-DFT, to calculate the molecular structure of solanidine, as well to predict its infrared and ultraviolet spectra. The calculated values are compared with the experimental data available for this molecule as a means of validation of our proposed chemistry model.
OBJECTIVE: To study the chemical constituents in the total saponin from Trigonellf foenum-graecum. METHOD: The compounds were isolated by column chromatography on macroporous resin and silica gel and elucidated by physical and chemical evidences and spectroscopic analysis. RESULT: Two compounds were obtained and identifiedas methyl-protodioscin and methyl-protodeltonin. CONCLUSION: Methyl-protodioscin and methyl-protodeltonin were isolated from this plant for the first time.
Solanidine is a steroidal aglycon of potato (Solanum tuberosum L.) glycoalkaloids and a very important precursor for the synthesis of hormones and some pharmacologically active compounds. Glycoalkaloids are hydrolyzed by mineral acid, yielding solanidine. This paper deals with the kinetics of solanidine hydrolytic extraction in different solid-liquid-liquid systems. The dried and milled potato (S. tuberosum L.) vines were used as a source of glycoalkaloids and as the solid phase. The solutions of hydrochloric acid in 2 and 10% (w/v) aqueous acetic acid, in 50% (volume) aqueous methanol, and in 50% (volume) aqueous ethanol were first liquid phase, and the medium for glycoalkaloid extraction from potato vines and their hydrolysis to solanidine. The chloroform, trichloroethylene, or carbon tetrachloride were the second, organic, liquid phase and the medium for solanidine extraction. This procedure combines three different processes: extraction of glycoalkaloids from potato vines, their hydrolysis to solanidine, and the extraction of solanidine, in a single step. The term hydrolytic extraction of solanidine was used for these processes. The purpose of the paper was to choose an optimal solid-liquid-liquid system for solanidine extraction and to define the procedure for its isolation from the organic liquid phase. The best degree of solanidine hydrolytic extraction (DHE) of more than 98% was achieved when 10% (w/v) hydrochloric acid in 50% (volume) methanol were the first liquid phase and chloroform was the second liquid phase, after 90 min. The yield of solanidine (q(S)) under these conditions is calculated to be 0.24 g/100 g of potato vines. Approximately 78% of the maximal possible yield of solanidine was isolated from chlorofom liquid phase. The IR and MS spectra of isolated solanidine were recorded.