A novel composite edible film fabricated by incorporating W/O/W emulsion into a chitosan film to improve the protection of fresh fish meat was written by Yuan, Dongdong;Hao, Xu;Liu, Guorong;Yue, Ying;Duan, Jiaojiao. And the article was included in Food Chemistry in 2022.Quality Control of 5-Isopropyl-2-methylphenol This article mentions the following:
A novel edible composite film constructed by incorporating W1/O/W2 emulsion (W1: aqueous solution of nisin; W2: water; oil phase: carvacrol) into chitosan film was characterized. Influences of preparing parameters on properties, especially stability, of primary and double emulsions were evaluated, and more persistent antibacterial activity was achieved. The films tension strength was increased by incorporating double emulsion at low concentration, but its oxygen permeability increased after this incorporation. The composite film displayed significant inhibitory effects on both Gram-pos. and Gram-neg. bacteria. SEM showed a sign of aggregation of some emulsion droplets near the surface of the composite film. FTIR found no pronounced interaction between the added active agents and chitosan. TGA proved that the double emulsion helped to increase the thermal stability of the film at high temperature Coating salmon fillets with the composite film significantly increased the shelf life of fish fillets, demonstrating optimal potency in preserving fish fillets. In the experiment, the researchers used many compounds, for example, 5-Isopropyl-2-methylphenol (cas: 499-75-2Quality Control of 5-Isopropyl-2-methylphenol).
5-Isopropyl-2-methylphenol (cas: 499-75-2) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Quality Control of 5-Isopropyl-2-methylphenol
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts