Effect of Spanish-style processing steps and inoculation with Lactobacillus pentosus starter culture on the volatile composition of cv. Manzanilla green olives was written by de Castro, Antonio;Sanchez, Antonio Higinio;Cortes-Delgado, Amparo;Lopez-Lopez, Antonio;Montano, Alfredo. And the article was included in Food Chemistry in 2019.Recommanded Product: 868-57-5 This article mentions the following:
The effects of the main steps of Spanish-style processing (alk. treatment and fermentation) on the volatile composition of cv. Manzanilla green olives were studied. Both spontaneous and controlled fermentations were considered. In the latter case, a Lactobacillus pentosus strain from green olive fermentation brine was used as starter culture. The volatile profile was determined by headspace solid-phase microextraction (HS-SPME) combined with gas chromatog.-mass spectrometry (GC-MS). Most of the volatile compounds detected in fresh olives decreased or were undetected after alk. treatment, while several compounds (mostly acetic acid, 2-methylbutanoic acid, and ethanol) were formed as a result of this treatment. Over 50 new volatile components, mostly esters and phenols, appeared as a result of fermentation The most outstanding finding was a considerable increase in 4-Et phenol (almost 100-fold increase) in inoculated olives compared to the uninoculated product. However, a sensory panel did not find significant differences in odor perception. In the experiment, the researchers used many compounds, for example, Methyl2-methylbutyrate (cas: 868-57-5Recommanded Product: 868-57-5).
Methyl2-methylbutyrate (cas: 868-57-5) 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. 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.Recommanded Product: 868-57-5
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics