Characterization of volatile and non-volatile fractions of spices using evolved gas analysis and multi-shot analytical pyrolysis was written by Mattonai, Marco;Watanabe, Atsushi;Ribechini, Erika. And the article was included in Microchemical Journal in 2020.Application In Synthesis of (2E,4E)-N-Isobutyldeca-2,4-dienamide The following contents are mentioned in the article:
In the present work, evolved gas anal.-mass spectrometry (EGA-MS) and anal. pyrolysis coupled with gas chromatog./mass spectrometry (Py-GC/MS) were used to characterize both the volatile and non-volatile fractions of six com. available spices. Anal. of spices is usually performed through the study of their headspace composition by solid phase microextraction (SPME). In this new approach, EGA-MS was used to establish thermal degradation regions, and Py-GC/MS was used to obtain compositional information on each region sep. using double-shot pyrolysis. This study demonstrates that EGA-MS and Py-GC/MS provide the same advantages of solid-phase micro extraction and increase the range of detectable products by performing high-temperature desorption and degradation of the non-volatile fraction of spices. Our approach provided both qual. and semi-quant. data that could be used in the future to improve authentication studies by considering the results not only of headspace composition, but also on the pyrolytic behavior of the lignocellulosic matrix. This study involved multiple reactions and reactants, such as (2E,4E)-N-Isobutyldeca-2,4-dienamide (cas: 18836-52-7Application In Synthesis of (2E,4E)-N-Isobutyldeca-2,4-dienamide).
(2E,4E)-N-Isobutyldeca-2,4-dienamide (cas: 18836-52-7) belongs to amides. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well. Thus amides can participate in hydrogen bonding with water and other protic solvents; the oxygen atom can accept hydrogen bonds from water and the N–H hydrogen atoms can donate H-bonds. Amides can be recrystallised from large quantities of water, ethanol, ethanol/ether, aqueous ethanol, chloroform/toluene, chloroform or acetic acid. The likely impurities are the parent acids or the alkyl esters from which they have been made. The former can be removed by thorough washing with aqueous ammonia followed by recrystallisation, whereas elimination of the latter is by trituration or recrystallisation from an organic solvent.Application In Synthesis of (2E,4E)-N-Isobutyldeca-2,4-dienamide
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics