Biomaterial Database

Quantitative determination of germines. The rate of transformation of germine-3,16-diacetate in buffered solutions of pH 7.4. 1980

I Yoshizawa, and K Fukushima, and F F Foldes

Germine (GER), germine-3-monoacetate (GMA) and germine-3,16-diacetate (GDA) when treated with 9:1 mixture of concentrated sulfuric acid and glacial acetic acid yield a deep purple color with characteristic ultraviolet absorption spectra. Combination of the color reaction with TLC makes possible the quantitative determination of these compounds in buffered solutions of pH 7.4 with a > 90% yield and satisfactory accuracy. It was observed that GDA incubated in such solutions is slowly transformed into GMA. The transformation of GDA to GMA was significantly faster with higher than with lower concentrations of GDA. There was no detectable breakdown of GMA under the same experimental conditions.

UI	MeSH Term	Description	Entries
D009132	Muscles	Contractile tissue that produces movement in animals.	Muscle Tissue,Muscle,Muscle Tissues,Tissue, Muscle,Tissues, Muscle
D010100	Oxygen	An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.	Dioxygen,Oxygen-16,Oxygen 16
D002245	Carbon Dioxide	A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.	Carbonic Anhydride,Anhydride, Carbonic,Dioxide, Carbon
D002595	Cevanes	Structurally-related alkaloids that contain the cevane carbon backbone.	Cevane Alkaloids,Alkaloids, Cevane
D002621	Chemistry	A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
D002855	Chromatography, Thin Layer	Chromatography on thin layers of adsorbents rather than in columns. The adsorbent can be alumina, silica gel, silicates, charcoals, or cellulose. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Chromatography, Thin-Layer,Thin Layer Chromatography,Chromatographies, Thin Layer,Chromatographies, Thin-Layer,Thin Layer Chromatographies,Thin-Layer Chromatographies,Thin-Layer Chromatography
D005861	Germine Acetates	Germine derivatives acetylated on any one or more of the hydroxy groups. These compounds are present in many polyester alkaloids which occur in Veratrum and Zygadenus species. They are used as antihypertensive agents, and in some cases, exhibit curare-like activity.	Germine-3-monoacetate,Acetates, Germine,Germine 3 monoacetate
D006863	Hydrogen-Ion Concentration	The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH	pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor