Characteristics and chemical compositions of propolis from Ethiopia was written by Rushdi, Ahmed I.;Adgaba, Nuru;Bayaqoob, Noofal I. M.;Al-Khazim, Ahmed;Simoneit, Bernd R. T.;El-Mubarak, Aarif H.;Al-Mutlaq, Khalid F.. And the article was included in SpringerPlus in 2014.Recommanded Product: 1731-94-8 The following contents are mentioned in the article:
Introduction: Propolis is a sticky material mixed by honeybees to utilize it in protecting their hives from infection by bacteria and fungi. The therapeutic properties of propolis are due to its chem. composition with bio-active compounds; therefore, researchers are interested in studying its chem. constituents and biol. properties. The main objective of this study is to determine the chem. compositions, characteristics and relative concentrations of organic compounds in the extractable organic matter of propolis samples collected from four different areas in Ethiopia. Results: The propolis samples were extracted with a mixture of dichloromethane and methanol and analyzed by gas chromatog.-mass spectrometry (GC-MS).The results showed that the total extract yields ranged from 27.2% to 64.2% (46.7 ± 19.1%). The major compounds were triterpenoids (85.5 ± 15.0% of the total extracts, mainly α-, β-amyrins and amyryl acetates), n-alkanes (5.8 ± 7.5%), n-alkenes (6.2 ± 7.0%,), Me n-alkanoates (0.4 ± 0.2%), and long chain wax esters (0.3 to 2.1%). Conclusion: The chem. compositions of these propolis samples indicate that they are potential sources of natural bio-active compounds for biol. and pharmacol. applications. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Recommanded Product: 1731-94-8).
Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Recommanded Product: 1731-94-8
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics