Switchable GC/GC x GC-olfactometry-mass spectrometry system for the analysis of aroma components of infant formula milk-based on cow and goat milk was written by Tang, Long;Zhang, Yuanyuan;Jin, Yanjing;Yu, Mingguang;Song, Huanlu. And the article was included in Journal of Food Composition and Analysis in 2022.Application In Synthesis of Oct-1-en-3-ol This article mentions the following:
The study sought to characterize the composition of volatile compounds and key aroma-active compounds of infant formulas (IF), which derived from cow′s milk and goat′s milk. The volatile aroma compounds were analyzed by the solid-phase microextraction (SPME) combined with a new switchable GC/GC x GC-olfactometry-mass spectrometry (SGC/GC2-O-MS) system, which can switch between one-dimensional and two-dimensional anal. modes and can realize the sniffing function under two-dimensional anal. conditions. The key aroma-active compounds were analyzed by the aroma extract dilution anal. (AEDA) and odor activity value (OVA). A total of 118 volatile compounds were identified in IF samples from 12 brands, of which 66 had aroma activity. These results revealed that hexanal had the highest FD factor but was not responsible for the difference between GS and CS. According to the results of OPLS-DA and VIP, it was helpful to screen for more important volatile compounds (E)- 2-octenal, (E,E)- 3,5-octadien-2-one, (E,E)- 2,4-decadienal, 3-methylbutanal and 2-pentylfuran helped distinguish GS from CS. In the experiment, the researchers used many compounds, for example, Oct-1-en-3-ol (cas: 3391-86-4Application In Synthesis of Oct-1-en-3-ol).
Oct-1-en-3-ol (cas: 3391-86-4) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Application In Synthesis of Oct-1-en-3-ol
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts