Search Results

You are looking at 1 - 3 of 3 items :

  • "GC/MC Analysis" x
Clear All

twelve Bulgarian species from genus Senecio. Twenty of them are new for the corresponding species. Other six structures reimain tentatively identified. Key words: Genus Senecio, Pyrrolizidine Alkaloids, GC/MC Analysis The capillary gas chromatography with mass spectrometry (GC/MS) is convenient and very often used method for analysis of a complex mix- ture containing pyrrolizidine alkaloids (PAs) (Witte et al., 1993). As a part of our systematic investigations on the species from the genus Senecio widespread in Bul- garia we studied the alkaloid profile of the well

, China). TOM was prepared by the two-step esterification procedure according to the procedure described by Ramadhas et al. [15]. LOM and SOM were prepared by NaOH-catalyzed transesterification according to the procedure 5 described by Jin et al. [17]. The fatty acid compositions of the oils are listed in Tab. 1 according to GC/MC analysis. Other materials were used without further purification. Tab. 1. The fatty acid compositions of soybean oil, linseed oil and tung oil. Oils Palmitic acid in wt.% Stearic acid in wt.% Oleic acid in wt.% Linoleic

contributed a lot to MG yield increment compared to oil bath heating. The combined use of IL/NMP and μWIr may be applicable to various biomass conversion processes into useful chemicals. Acknowledgments The authors are very grateful to Dr. Suzuki at Forest Products Research Institute, Toyama Prefectural Agricultural, Forestry and Fisheries Research Center in Japan, for the GC-MC analysis of the reaction products. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission. Employment or