Non-thermal plasma effects on the lipoxygenase enzyme activity, aroma and phenolic profiles of olive oil was written by Amanpour, Asghar;Vandamme, Jeroen;Polat, Suleyman;Kelebek, Hasim;Van Durme, Jim;Selli, Serkan. And the article was included in Innovative Food Science & Emerging Technologies in 2019.Safety of Methyl heptanoate The following contents are mentioned in the article:
Effects of non-thermal plasma (NTP) technol. on the aroma and phenolic compositions and inactivation of lipoxygenase (LOX) enzyme activity of extra virgin olive oil were investigated for the first time. A short non-thermal plasma treatment with pure argon gas (2 standard liters per min and an average voltage of 7 kV) was applied for 135 s on the olive oil sample. The LOX activity in the NTP treated oil was inhibited up to 42.9% in comparison with untreated oil. Mean values of the peroxides in both samples, expressed in meq oxygen/kg of oil, did not show any statistically significant difference. The values of the antioxidant potentials in the samples proved a mild reduction after NTP treatment. A total of 14 phenols and 31 volatiles were found in both samples with same profile. Although there was a slight difference in the test samples with regard to the concentration of individual phenolic and aroma compounds, this difference was not statistically significant. Therefore, NTP treatment had no statistically significant influence on the antioxidant activity, peroxide value, phenols and volatiles, except LOX activity. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Safety of Methyl heptanoate).
Methyl heptanoate (cas: 106-73-0) 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, including apples, durians, pears, bananas, pineapples, and strawberries. 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.Safety of Methyl heptanoate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics