Comparison of two methods for the collection of volatiles from three legumes was written by Bai, Ze-zhen;Yang, Mei-hong;Zhao, Xiang. And the article was included in Caoyuan Yu Caoping in 2021.Related Products of 695-06-7 This article mentions the following:
Volatiles from three legume species, Medicago ruthenica, black soybean and Glycine soja, were extracted by dynamic headspace extraction and solid-phase microextraction (SPME) to investigate the effects of extraction method on the volatile components. Gas chromatog.-mass spectrometry was used to analyze and identify the main components of volatiles. The results showed that the volatile components (mainly alcs., aldehydes, acids, esters, ketones, terpenes and hydrocarbons) extracted by dynamic headspace extraction were different from those by SPME. There were 33, 18 and 16 components of volatiles extracted by dynamic headspace extraction in M. ruthenica, black soybean and Glycine soja, resp., while the corresponding values extracted by SPME were 24, 24 and 22. Some common chems. were extracted using those two different methods, for example, six chems. (including leaf alc., trans-hex-3-en-1-ol, (E)-β-ocimene, 4-ethylbenzaldehyde, cis-3-hexenyl acetate, hexadecane) in M. ruthenica; three chems. (4-ethylbenzaldehyde, cis-3-hexenyl acetate and cyclohexane) in black soybean; and 4 chems. (4-ethylbenzaldehyde, cis-3-hexenyl acetate, oct-1-en-3-ol and 3-octanol) in Glycine soja. The chems., cis-3-hexenyl acetate and 4-ethylpropiophenone were detected in all those three legume species. The main volatile components extracted by dynamic headspace anal. were esters, while the main components extracted by SPME were alcs. As the dynamic headspace anal. could reflect the near-natural state of plants, it is recommended for the collection of volatiles from plants. This study identified the volatile components of three legume species, which could provide reference for further screening of volatile components in legumes that have attracting activity to insects. In the experiment, the researchers used many compounds, for example, 5-Ethyldihydrofuran-2(3H)-one (cas: 695-06-7Related Products of 695-06-7).
5-Ethyldihydrofuran-2(3H)-one (cas: 695-06-7) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Related Products of 695-06-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics